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Stroke Guidelines CONTENTS 1 Document Management ...................................................................................................... 4 1.1 Manual Authorisation .................................................................................................... 4 1.2 Staff Familiarity with Document..................................................................................... 4 1.3 Distribution of Documents ............................................................................................. 4 1.4 Amendments to Previous Issue .................................................................................... 4 1.5 Amendments to Future Issue will be documented here Amendments ........................... 4 2 Organisation of Stroke Services .......................................................................................... 5 2.1 Acute Stroke Admission Policy ..................................................................................... 5 2.2 Discharge Planning – Medical Ward ............................................................................. 6 2.2.1 Referral guidelines for ongoing rehabilitation .......................................................... 6 2.2.2 Driving Guidelines .................................................................................................. 9 3 Acute Management of Stroke ............................................................................................ 11 3.1 Thrombolysis Protocol ................................................................................................ 11 3.1.1 Inclusions: ............................................................................................................ 11 3.1.2 Exclusions and Precautions: ................................................................................ 11 3.1.3 Medical Assessment Protocol Instructions ........................................................... 12 3.1.4 ALTEPLASE for Acute Ischaemic Stroke ............................................................. 13 3.1.5 NURSING PROTOCOL ........................................................................................ 15 3.2 Acute BP management first 7 Days after stroke .......................................................... 19 3.2.1 BP Monitoring....................................................................................................... 20 3.2.2 Antihypertensive medication for Secondary Prevention after stroke or TIA........... 21 3.2.3 Hypotension ......................................................................................................... 21 3.3 Malignant Cerebral Oedema / Hemicraniectomy Guideline ......................................... 22 3.3.1 “Malignant Infarction” Guideline ............................................................................ 22 3.3.2 Malignant Infarction Guideline Procedures: .......................................................... 23 3.4 Acute Management of Intracerebral Haemorrhage ..................................................... 24 3.5 Intracerebral Haemorrhage whilst on warfarin: Reversal of the warfarin related coagulopathy .................................................................................................................... 24 4 Inpatient Care ................................................................................................................... 26 4.1 The Acute Stroke Swallow Screen for dysphagia trained nurses ................................ 26 4.2 Communication for patients with disability following stroke ......................................... 29 4.3 Hydration Guideline .................................................................................................... 29 4.3.1 Guideline for hydration after acute stroke ............................................................. 29 4.4 Nutrition Guideline ...................................................................................................... 30 4.4.1 Guidelines ............................................................................................................ 30 Stroke Guidelines Page 1 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines 4.4.2 All Patients ........................................................................................................... 30 4.4.3 Patients receiving ongoing dietetic input............................................................... 31 4.4.4 Patients receiving enteral feeding......................................................................... 31 4.4.5 Decision to institute enteral feeding ...................................................................... 31 4.5 Diabetes Guidelines.................................................................................................... 32 4.5.1 Guideline for Hyperglycaemia after Acute Stroke ................................................. 32 4.5.2 General Recommendations: ................................................................................. 32 4.5.3 Management of Patients with Known Diabetes or Documented Hyperglycaemia . 32 4.5.4 All Diabetic Patients Post Stroke .......................................................................... 32 4.5.5 Insulin Requiring Diabetes.................................................................................... 33 4.5.6 Type 2 Diabetes ................................................................................................... 33 4.5.7 Type 2 Diabetes on Diabetic Diet Alone or Antidiabetic Agents ............................ 34 4.5.8 Patients with Raised Blood Sugar on Admission .................................................. 34 4.6 Transferring Patient from Bed to Chair Guidelines ...................................................... 35 4.6.1 Transferring Checklist .......................................................................................... 35 4.7 Management of the Hemiplegic Upper Limb ............................................................... 35 4.7.1 Assessment of the Hemiplegic Upper Limb .......................................................... 36 4.7.2 Pain ...................................................................................................................... 36 4.7.3 Positioning ........................................................................................................... 37 4.7.4 Sensation ............................................................................................................. 38 4.7.5 Shoulder Subluxation ........................................................................................... 38 4.7.6 Oedema ............................................................................................................... 38 4.7.7 Spasticity.............................................................................................................. 39 4.7.8 Splinting ............................................................................................................... 39 4.7.9 FES ...................................................................................................................... 40 4.7.10 Strapping ............................................................................................................ 40 4.8 DVT / PE Prophylaxis Guideline ................................................................................. 41 4.8.1 Venous Thromboembolism Prevention in Stroke Patients .................................... 41 4.8.2 Guidelines for the prevention of Venous Thromboembolism................................. 41 4.9 Urinary Incontinence ................................................................................................... 43 4.9.1 Stroke Continence Protocols ................................................................................ 43 4.9.2 Urinary Incontinence Assessment Source: Dunedin Acute Stroke Unit................. 43 4.10 Formal Family Meeting Guidelines ............................................................................ 50 4.10.1 Purpose.............................................................................................................. 50 4.10.2 Introduction ........................................................................................................ 50 4.10.3 Procedure .......................................................................................................... 50 4.11 Palliative Care .......................................................................................................... 52 Stroke Guidelines Page 2 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines 5 Transient Ischaemic Attack (TIA) Guidelines ..................................................................... 53 5.1 Acute Management in the ED /Medical Ward.............................................................. 53 5.1.1 Transient Ischaemic Attack (TIA) Acute Management in the ED/Medical Ward .... 53 5.1.2 Transient Ischaemic Attack (TIA) Acute Management In the ED / AMAU / ASU Guidelines ..................................................................................................................... 54 6 Secondary Prevention Guideline ....................................................................................... 60 6.1 Secondary Prevention after Stroke ............................................................................. 60 6.2 Antiplatelet Therapy .................................................................................................... 61 6.3 Anticoagulation ........................................................................................................... 61 6.4 Carotid Endarterectomy .............................................................................................. 61 Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 3 of 67 Master Copy is Electronic Stroke Guidelines 1 Document Management 1.1 Manual Authorisation This manual has been through a review process and achieved signoff from • Stroke Physician General Medicine. 1.2 Staff Familiarity with Document Staff are expected to become familiar with the contents of this manual. And keep up to date with additions and amendments. The information in this manual applies to all staff who work as part of the stroke services offered within the West Coast District Health Boards, these areas of practice include Emergency Department, the Critical Care Unit, Medical and ATR ward. Evidence of familiarity is recorded in Induction Documentation and stored in the employees file. 1.3 Distribution of Documents This Manual is available electronically on the intranet under WCDHB Policies and Procedures. Controlled hard copies will be made available for the Emergency Department, the Medical Ward and the Critical Care Unit. 1.4 Amendments to Previous Issue This is the first issue of the West Coast DHB Stroke Guidelines manual. With permission from the original source, this manual has been largely adapted from Canterbury DHB Stroke Guidelines Issue Five- July 2014. Any amendments have been made in accordance with the New Zealand Clinical Guidelines for Stroke Management 2010. They are explained in more detail in that document, which can be accessed online www.stroke.org.nz/resources/. Readers are encouraged to refer to the New Zealand Stroke Guidelines for more information 1.5 Amendments to Future Issue will be documented here Amendments Date Signature Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 4 of 67 Master Copy is Electronic Stroke Guidelines 2 Organisation of Stroke Services 2.1 Acute Stroke Admission Policy Acute Stroke admissions are admitted to the only Medical Ward or critical care unit at Greymouth Hospital. In the case that a patient is admitted the Buller Hospital with a potential diagnosis of acute stroke, all patients should be transferred the Greymouth Hospital for further assessment and treatment unless clinically indicated by senior medical staff. The Medical ward will take any patient admitted to hospital with a diagnosis of an acute stroke. This will include strokes of all severities, including those with a devastating stroke and who may be dying. The individual cases requiring thrombolysis treatment are to be admitted to CCU for the duration of this treatment and/or longer. NB: TIAs (by definition are non-disabling) may not necessarily need inpatient admission. However they require URGENT investigations and secondary prevention instituted (Refer to Section 8: TIA Acute Management in the ED/Morice). In general patients admitted following acute stroke will be admitted under a General Medicine Physician. If they require specialised neurological assessment, they should be reviewed by the on call RMO and/or physician and if requiring specialist input, contact the on call Acute Neurology Registrar on duty at CDHB. For example: • patients with progressive or unstable stroke deficits • younger patients with large strokes who may be at risk of deterioration due to progressive brain swelling • patients where the diagnosis or aetiology of stroke is uncertain or unusual kind, including younger patients without traditional vascular risk factors. The following two clinical pathways are commenced in ED • Thrombolysis pathway (document to be complete) • Acute Stroke Clinical Pathway (document to be completed) Stroke patients admitted under general medical physicians will be reviewed daily on the ward round. If a patient requires ongoing inpatient care and treatment they will remain under the medical physicians care for this period of time, until deemed medically stable for transfer to rehabilitation services, to long term residential care or discharged home. The first point of contact is the physician in which the patient is being admitted under. If Dr to Dr contact is requested, the RMO caring for the patient is required to make contact with the physician the patient is admitted under or secondly the physician on call. Contact the front reception regarding these contact details. It may be appropriate to contact the Acute Neurology Registrar at CDHB, depending on the patient’s presentation ie, if the patient is younger, with a complex or atypical stroke. Principles • All stroke patients regardless of types and severity are admitted to the only medical ward. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 5 of 67 Master Copy is Electronic Stroke Guidelines • • Patients who are dying from their acute stroke should remain in the medical ward for palliative care (short term). Patients admitted because of a presumed stroke that subsequently have an alternative diagnosis, should remain on the medical ward if appropriate for the diagnosis, transferred out to the most appropriate specialist ward or discharged home, as soon as possible. Patients who develop a stroke whilst in hospital should also be reviewed on an individual basis. For most (e.g. stroke on a surgical ward) it would be appropriate to shift the patient into the medical ward when they are surgically stable. Those patients who have a stroke in hospital for whom thrombolysis is considered should be referred to the on-call physician for further discussion regarding this. 2.2 Discharge Planning – Medical Ward Discharge planning should commence as soon as possible after admission to the medical ward. In general, an estimation of the likely length of inpatient care required should be made within the first 48-72 hours of hospital admission. • If a further 4-5 days (or less) of hospital stay seems likely, then a plan for the patient to be transferred to the only rehabilitation services available should be commenced. The patient and family should receive stroke education, which is reinforced by written information on discharge. • If a further 7-10 days (or longer of inpatient care) seems likely, then early referral for rehabilitation services should be made. See referral guidelines for ongoing rehabilitation following (2.2.1) • Discharge plans for patients who fall between these time estimates may be deferred for a further 48-72 hours, then reviewed. However, it is recommended that a rehabilitation specialist is involved early for these patients. All patients will continue to have active multidisciplinary rehabilitation during their stay in the medical ward and this will not be deferred because of an impending transfer to another rehabilitation facility/service. If a patient is not for active treatment and not for rehabilitation, a decision regarding palliation and/or hospital level care placement may be necessary. These decisions are complex. They will be made on an individual patient basis with involvement of the patient, the family and the wider multidisciplinary team (which should include a Geriatrician if placement in a long term care facility is likely). Generally, a period of observation on the medical ward will be required before such a decision can be made. 2.2.1 Referral guidelines for ongoing rehabilitation Key issues that are essential to know prior to making a decision about further rehabilitation include:Type and severity of stroke and stroke related disabilities • Progress since stroke ictus • Complications from stroke Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 6 of 67 Master Copy is Electronic Stroke Guidelines Medical Stability- medical stability is not a prerequisite for transferring a stroke patient to rehabilitation services but some medical conditions are best managed under acute services. Previous Level of Function • What are main types and causes for their disabilities? • • Severity of these disabilities? Previous living arrangements? What does the person want? What does the family/whanau or caregiver want? Where should rehabilitation take place. • Home - What is home like and who lives at home? • Inpatient Rehabilitation These patients will still be dependent on others for self-cares and/or mobility. If not, they can usually be managed in a community rehabilitation setting where available. AGE: • All stroke patients regardless of age should be considered and offered the opportunity of rehabilitation. With the exception of those who are significantly disabled from the stroke and those are have minor disabilities and do not require support or assistance with mobility and self-cares. Each individual patient is to be assessed on an individual basis. 2.2.1.1 Admission Policy for the Rehabilitation Service Principles Those patients who need further stroke rehabilitation will have been seen by and/or discussed with the lead physician of the rehabilitation services prior to transfer. Stroke patients will transfer to the rehabilitation service- IF but NOT limited to the following criteria • Are 65 years old or over and have a diagnosis of an acute stroke AND • They need ongoing inpatient rehabilitation AND • Their needs are best met in the rehabilitation unit. Principles of the Rehabilitation Service The rehabilitation services at Greymouth hospital aim to take all types and severity of strokes. All patients, irrespective of their age, gender and severity of their stroke, have the potential to benefit from a stroke rehabilitation approach. However the presence of comorbidities or frailty may modify the decision as to potential for rehabilitation. Greymouth hospital offers a general rehabilitation service and rehabilitation will be provided on an individual patient to patient basis with the aim to rehabilitate the individual as close to baseline as possible. This includes: • Acute stroke is the major determinant of current disability • Acute stroke in previously independent healthy older person Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 7 of 67 Master Copy is Electronic Stroke Guidelines • • • • Acute stroke is not the major determinant of current disability “frailty” factors and (diminished) functional reserves Significant cognitive impairment Multiple comorbidities 2.2.1.2 Admission Criteria For Brain Injury Rehabilitation Service (BIRS) Inpatients. If a stroke patient is under the age of 65 years and would benefit from BIRS approach of rehabilitation, the option is available for transfer to this service within the CDHB. The following criteria need to be taken into consideration when considering a patient for BIRS. The criteria’s are not absolutes and each patient is considered on their merits around the appropriateness and beneficence of rehabilitation for their condition and where this should take place. Due to geographical location of this service, a family meeting will be held prior to acceptance into this service to ensure willingness from the patient and associated family involved. Inclusion Criteria • BIRS accepts patients from 16-64 yrs. • Patients must be deemed to benefit from inpatient rehabilitation. • Patients must be able to engage in an active intensive inpatient rehabilitation program. • Patients must be medically stable which includes having completed their investigations and interventions (to stop unnecessary interruptions and transport between hospitals). • The patient has a minimum of two impairments • The patient or family must give consent to rehabilitation at BIRS which includes being educated about BIRS. Relative exclusion criteria: • The patient is 65 yrs or older • Medically unstable- includes patients requiring walled oxygen (BIRS has no walled O2) • Investigations and interventions are incomplete unless the intervention is deferred to an agreed time after a period of rehabilitation. • Medical conditions which, in spite of maximal medical therapy, are expected to recur in the medium term resulting in ongoing impairment and disability thereby negating the effects of rehabilitation. • The assessment by IDTM considers that benefit from rehabilitation is negligible whereupon recommendations will be made to the referrer. • Low level of consciousness so that patient not able to interact in an intensive rehabilitation program • The patient’s condition is such that they are deemed to be better suited to a slow stream rehabilitation facility • Malignant conditions- although if life expectancy >6 months and it is thought that the patient could get home to be with family, a short period of rehab may be considered. • Life-expectancy is <6 months. • Patients referred merely for placement - BIRS is not a placement agency. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 8 of 67 Master Copy is Electronic Stroke Guidelines • Patients who would benefit from but are not able to access 6 weeks post-discharge therapy at Christchurch Hospital due to resourcing constraints. Relative exclusion/low priority • Multiple comorbidities of such a nature that benefit from intensive rehabilitation is significantly affected Significant drug and alcohol abuse which is thought to impact on the patient willingness and ability to persevere with rehabilitation as well as cognitive recovery 2.2.2 Driving Guidelines Patient must be given driving advice prior to discharge by the Medical Staff or delegated to Occupational Therapist or authorized Nursing Staff. There should be documentation of this advice in the clinical notes and in the discharge letter. It is good practice that the patient be given a copy of this advice in writing [driving advice form – see appendix]. IT IS ESSENTIAL THAT ADVICE GIVEN TO PATIENT IS CONSISTENT Where there is doubt about fitness to drive in terms of residual disability in any area, a referral for driving assessment should be made to the Greymouth Driving assessors or to the driver assessment occupational therapists at Burwood Hospital. It may be more appropriate for the general practitioner to make this referral in a review 1 month following the event. 1. Stroke a) Class 1 or Class 6 licence and/or a D, F, R, T or W licence endorsement in relation to vehicles less than 4500kg GLW or GCW • An individual should not drive until such time as clinical recovery is complete, with no significant residual disability likely to compromise safety. This period should not be less than 1 month from the event • Permanent homonymous hemianopia is contraindication to ongoing driving. If the extent of visual field deficit is uncertain referral to the Opthalmology department for visual field mapping is appropriate. • Epilepsy associated with stroke should be managed as per the LTSA “Medical aspects of fitness to drive” guidelines. b) Class 2, 3, 4, or 5 licence and/or a P, V, I, or O licence endorsement. • A cerebrovascular event is usually considered a permanent contraindication to ongoing driving with such licences. • Under some circumstances it may be possible to grant a licence with conditions. If there has been full and complete recovery with no suggestion of recurrence over a period of 3 years an application can be made to the Director of the LTSA with a supporting specialist physician or neurologists report. 2. Transient Ischaemic Attacks (TIAs) a) Class 1 or Class 6 licence and/or a D, F, R, T or W licence endorsement in relation to vehicles less than 4500kg GLW or GCW • Individuals should not drive for at least 1 month following a single attack • Individuals should not drive for at least 3 months following stabilisation of recurrent attacks. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 9 of 67 Master Copy is Electronic Stroke Guidelines b) Class 2, 3, 4, or 5 licence and/or a P, V, I, or O licence endorsement. • Individuals should not drive for at least 6 month following a single attack subject to the cause being investigated and satisfactorily treated. • Individuals, who have multiple transient ischaemic attacks that impair consciousness or awareness, cause vertigo, or cause visual disturbance, should not drive. In some circumstances following multiple ischaemic attacks it may be possible to grant a license with conditions. If there has been no attack for 12 months an application can be made to the Director of the LTSA with a supporting specialist physician or neurologists report These guidelines are an abridged version of those in the “Medical aspects of fitness to drive” guidelines from the Land Transport and Safety Authority. If there is any doubt then these guidelines should be consulted. http://www.nzta.govt.nz/resources/medical-aspects/docs/medical-aspects.pdf Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 10 of 67 Master Copy is Electronic Stroke Guidelines 3 Acute Management of Stroke 3.1 Thrombolysis Protocol 3.1.1 Inclusions: • Acute management of ischemic stroke in patients with the following parameters: • Within 3.5 hours after onset of symptoms, • After clinical diagnosis via CT scan. • Patient is > 18 years and < 85 years • Patient must NOT have woken from sleep with symptoms UNLESS able to clearly state the time of going to sleep and time of waking and is less than 3.5 hours. 3.1.2 Exclusions and Precautions: • Severe stroke as assessed clinically (NIHSS>25) and/or by appropriate imaging techniques. • Minor stroke where symptoms are rapidly improving (NIHSS). • Seizure prior to administration of alteplase*. • Presentation suggestive of subarachnoid haemorrhage, even if CT normal. • Presumed septic embolus. • Stroke or serious head trauma in previous 3 months*. • Major surgery or internal injury (including MI, organ biopsy) within 30 days*. • GI or urinary tract haemorrhage within 21 days*. • Arterial puncture at non-compressible site within 7 days*. • History of intracranial haemorrhage, aneurysm, arterio-venous malformation, cancer. • History of other neurological disorder causing significant disability / may confound assessment. • Pregnancy, lactation, or parturition within 30 days. • Other serious, advanced, or terminal illness, or any other condition that would impose a significant hazard to the patient if IV alteplase were initiated. • Blood pressure >185 systolic or >110 diastolic on repeated measurements. • Known hereditary or acquired haemorrhagic diathesis, e.g., APTT or PT greater than normal. • Warfarin therapy with an INR of >1.5, dabigatran treatment within 12 hours or TT >75s. Dual antiplatelet therapy with aspirin plus clopidogrel/ticagrelor is a warning but not an absolute contraindication. • • Baseline glucose<2.8 or >22.0 mmol/L*. Platelets <100 109/L or Hct <0.25. *warnings, not absolute contraindications. Note: Order to give Alteplase must be given by General Physician. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 11 of 67 Master Copy is Electronic Stroke Guidelines 3.1.3 Medical Assessment Protocol Instructions 3.1.3.1 Registered Medical Officer/Registrar Instructions ‘TIME IS BRAIN ’ Call received from ED triage: ambulance pre-hospital notification of suspected acute stroke. 1 Confirm basic inclusion criteria: likely stroke within 3.5h of onset. Notify Clinical Nurse Manager/ Duty Nurse Manager of possible stroke thrombolysis Record symptom onset time. 2 Confirm that immediate CT scan has been arranged on arrival, including immediate transportation to scanner. Confirm that urgent CBC has been sent (& INR if on warfarin). 3 Proceed to ED to meet patient on arrival for Thrombolysis screening assessment. 4 Notify CCU nurse of possible acute stroke patient who may need admission to CCU and possible Alteplase infusion. 5 Proceed to CT scanning for clinical assessment. a) Follow Acute Stroke Register Form WCDHB/ Stroke Thrombolysis Pathway- To be completed. b) History: DIAGNOSIS of stroke, ONSET TIME, check-list of inclusion & exclusion criteria for Alteplase. 6 Examination a) Confirm findings are those of a STROKE. b) Quantify deficits to enable NIHSS score calculation use Stroke Register form: • consciousness, commands (gesture if aphasic), speech • gaze palsy, hemianopia • power face, arms and legs bilaterally • incoordination (esp. if suspect post. circulation lesion) • hemisensory abnormality • neglect / inattention 6 CT scan review- must be interpreted by a radiology registrar, a radiologist or a neurologist. Record time CT interpreted. See CT exclusion criteria below. 7 Obtain Blood count and glucose results (INR if warfarin). 8 PAGE MEDICAL PHYSICIAN ON CALL THROUGH HOSPITAL OPERATOR • Discuss clinical presentation and finding with the on call physician and if agree to thrombolysis continue to next step. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 12 of 67 Master Copy is Electronic Stroke Guidelines 9 Treat with Alteplase: a) Consent from patient or next of kin (written consent is desirable but not mandatory) b) Transfer patient to CCU for Alteplase bolus and infusion- This is ONLY to be administered in CCU. Use dose-calculation table. Prescribe on drug chart. RMO should be present when giving the IV bolus and is to attend until infusion is commenced. 10 If patient is NOT treated with Alteplase: a) Proceed with admission under general medical physician to the medical ward unless medical unstable and requiring closer observation then consider admission to CCU. DO NOT send the patient back to ED unless essential for patient safety. b) Notify Clincal Nurse Manager/Duty Nurse manager and Critical Care Nurse that the alteplase infusion is not to proceed. 3.1.3.2 CT Exclusions Criteria • Likely aetiology other than acute brain ischemia; haemorrhage • Early signs of major infarction (sulcal effacement, mass effect, oedema/hypodensity darker than white-matter, possible haemorrhage). • ‘Subtle’ early signs eg ‘grey-white differentiation’ do not exclude from treatment within 3 hours but may be a caution between 3 and 4.5 hours of stroke onset if extensive in nature. 3.1.4 ALTEPLASE for Acute Ischaemic Stroke • Actilyse 10mg per vial • Actilyse 50mg per vial Dose: The dose is 0.9mg/kg (maximum of 90mg) given as: 1. 10% of the total dose as a bolus over 1 minute. 2. Remaining 90% as an infusion over 60 minutes via buretrol primed with saline. Note: Do NOT exceed a 90mg dose due to increased risk of intracranial bleeding. Note: No other anticoagulant or antiplatelet medication to be given for 24 hours Patient Weight (kg) Total dose @ 0.9mg/kg (mg) 40 41 42 43 44 45 46 47 36 36.9 37.8 38.7 39.6 40.5 41.4 42.3 Vol of 1mg/ml alteplase 10% 90% Bolus infusion (ml) (ml) 3.6 32.4 3.7 33.2 3.8 34 3.9 34.8 4 35.6 4.1 36.4 4.1 37.3 4.2 38.1 Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Patient weight (kg) Total dose @ 0.9mg/kg (mg) 70 71 72 73 74 75 76 77 63 63.9 64.8 65.7 66.6 67.5 68.4 69.3 Vol. of 1mg/ml alteplase 10% 90% Bolus Infustion (ml) (ml) 6.3 56.7 6.4 57.5 6.5 58.3 6.6 59.1 6.7 59.9 6.8 60.7 6.8 61.6 6.9 62.4 Page 13 of 67 Master Copy is Electronic Stroke Guidelines 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 43.2 44.1 45 45.9 46.8 47.7 48.6 49.5 50.4 51.3 52.2 53.1 54 54.9 55.8 56.7 57.6 58.5 59.4 60.3 61.2 62.1 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.9 6 6.1 6.2 38.9 39.7 40.5 41.3 42.1 42.9 43.7 44.5 45.4 46.2 47 47.8 48.6 49.4 50.2 51 51.8 52.6 53.5 54.3 55.1 56 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100+ 70.2 71.1 72 72.9 73.8 74.7 75.6 76.5 77.4 78.3 79.2 80.1 81 81.9 82.8 83.7 84.6 85.5 86.4 87.3 88.2 89.1 90 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.7 7.8 7.9 8 8.1 8.2 8.3 8.4 8.5 8.6 8.6 8.7 8.8 8.9 9 63.2 64 64.8 65.6 66.4 67.2 68 68.8 69.7 70.5 71.3 72.1 72.9 73.7 74.5 75.2 76.1 76.9 77.8 78.6 79.4 80.2 81 Administration: Step 1 2 Action Determine dosing according to patient weight (refer Table 1). Reconstitute each vile with water for injection using the following ratios: - 10mg : 10ml water - 50mg : 50ml water Notes: If using the transfer device supplied with Actilyse®, it should be inserted into the diluent vial first since the alteplase vials are under partial vacuum. DO NOT use the vial if the vacuum is not present. 3 Mixing should be accomplished by gentle swirling and slow inversion. Do NOT shake. 4 Slight foaming upon reconstitution is normal – Allow to settle. Bolus IV Injection of 10% 5 A separate IV cannula should be used to administer the alteplase. 6 Draw up 10% of the total dose (refer Table 1) and administer as a bolus IV injection over 1 minute. Infusion of Remaining 90% 7 The remaining 90% of the dose should be administered as an infusion using a volumetric pump via a buretol over 60 minutes. Prime the buretol and IV giving set with 100ml bag of saline, leaving only 10ml of saline in the buretrol to prevent air entering the IV line once the actilyse is place into the buretrol. (refer Table 1). Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 14 of 67 Master Copy is Electronic Stroke Guidelines Note: In line filters should NOT be used due to potential for the drug to bind to the filter. 3.1.5 NURSING PROTOCOL 3.1.5.1 Neurological Observation and Monitoring during and after Atleplase Infusion • Full neurological observations, including Glasgow Coma Score, pupils and limb strength (using coma record form) and pulse, temperature, BP, respiratory rate and oxygen saturation for the first 48 hours as below: o Every 15 minutes 2 hours o Every 30 minutes 4 hours o Hourly 4 hours o 2 hourly 12 hours o 4 hourly if stable until medical team review • Monitor for intracranial haemorrhage and other potential bleeding sites. 3.1.5.2 Reportable observations and Possible Complications: • Hypertension ≥ 185/110. • Hypotension (systolic BP ≤ 110). • Symptomatic intracranial haemorrhage (up to 10% of patients). • Neurological deterioration (assume = bleed until proved otherwise). • Bleeding: into GI tract, urogenital tract, the skin, nose bleed and superficial bleeding from punctures or damaged vessels. • Further embolism. • Hypotension. • Nausea and/or vomiting. • Fevers. • Allergic reactions. They may appear as: rash, urticaria, bronchospasm, angioedema, hypotension, shock etc. Protect airway and treat as per anaphylaxis. 3.1.5.3 Further Assessments of Patient • Continue to monitor blood pressure for up to 24 hours following treatment. • Observe / test all body waste for suggestion of occult bleeding. • Check potential bleeding sites (i.e. wounds, IV access, puncture sites) Note: onset of abdominal pain may indicate retroperitoneal bleeding. • Minimise physical handling of the patient to prevent bruising/bleeding: o strict bed rest for the first 24hrs o safety precautions to prevent falls o do not use razor blade for shaving • Minimise invasive procedures: • Avoid IDUC placement during alteplase infusion and at least 30 minutes after infusion. • Avoid NGT placement for 24h after infusion, if possible. • Leave a dedicated IVL in situ for blood taking, if possible. • If venepuncture is required, apply direct pressure to puncture site for 20 minutes. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 15 of 67 Master Copy is Electronic Stroke Guidelines 3.1.5.4 Management of adverse effects: Management of Bleeding Complications Bleeding should be considered as the likely cause of neurological worsening after use of alteplase until CT is available. Emergency CT required For any life-threatening haemorrhagic complication, including ICH: 1) Discontinue ongoing infusion alteplase. 2) Obtain blood samples for coagulation tests (FBC, APTT/INR, fibrinogen) and cross-match if transfusions are needed. 3) Emergency imaging investigation. 4) Obtain surgical consultation, as necessary (surgery is usually delayed until the fibrinolytic state is corrected). 5) Consider other interventions that may be useful, such as transfusion, cryoprecipitate, and platelets (e.g. 6-8 U of cryoprecipitate or fresh frozen plasma, and 6-8 U of platelets). 6) Mechanical compression should be applied to bleeding sites, when possible. Note: As alteplase has a short half-life and minimal effects on blood coagulation, replacement of coagulation factors is generally not required. 3.1.5.5 Blood Pressure Management Monitor BP during first 24 hours after alteplase treatment. • q15 min for 2 h, q30 min for 4 h, q1h for 4 h, q2h for 12 h, then q4h If Systolic BP is 180-230mmHg or Diastolic BP 105-120mmHg (≥2 recordings; 5-10min apart): • Give IV labetalol 10mg over 1-2 minutes. • The dose may be repeated or doubled every 10-20 minutes up to a total dose of 150mg. • Monitor BP every 15 minutes during labetalol treatment and observe for development of hypotension. If Systolic BP >230 or Diastolic BP 121-140mmHg: • Treat with repeated doses of IV labetalol, as above, every 10 minutes up to a total dose of 150mg. • If no satisfactory response, infuse sodium nitroprusside (0.5- 10ug/kg per minute)*. If Diastolic BP >140 for 2 or more recordings 5-10 minutes apart: • Infuse sodium nitroprusside (0.5-10ug/kg per minute).* Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 16 of 67 Master Copy is Electronic Stroke Guidelines 3.1.5.6 Alteplase Record in Acute Ischaemic Stroke Time of Stroke Onset (24hr clock) __________________ Date of Stroke Onset _____________________ Time of Arrival to Emergency (24hr clock) __________________ Time of CT head (24hr clock) _____________________ Candidate for alteplase (refer to Alteplase protocol for management) YES NO reason: If Yes YES NO Informed consent obtained for alteplase? Time (24hr clock) _________________ Highest pre alteplase BP recording _______/______ Time of start of alteplase administration (24hr clock) Laboratory Results Date: ____/____/_____ Time: _________________ APTT: INR (if on warfarin): Glucose: Pregnancy Test Weight ______________Kg Estimated Alteplase Dose 0.9mg/kg dose (max dose 90mg) Measured (please tick) Doctor’s signature: Name: Date /Time Volume given (1mg/ml) Signatures 10% of total dose given as IV bolus dose over 1 minute Remaining 90% infused over 60 minutes NB Prescription and Administration must also be recorded on the Adult Medication Chart Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 17 of 67 Master Copy is Electronic Alteplase Record in Acute Ischaemic Stroke- COPY ONLY Place bradma here: Stroke Guidelines 3.1.5.7 Mechanism of action: Alteplase is a recombinant human tissue-type plasminogen activator. It is relatively inactive in the general circulation and its main effects are exerted when bound to a fibrin clot. Once bound to fibrin it is activated and causes the conversion of plasminogen to plasmin resulting in the dissolution of the clot. It is cleared rapidly from the body with approximately 80% removed from circulation 10 minutes after the infusion is terminated. Drug interactions: Medications Warfarin Dabigatran Platelet aggregation inhibitors (eg aspirin, clopidogrel, ticagrelor) Heparins (including enoxaparin) Rivaroxaban ACE-Inhibitors Interaction Increased risk of bleeding prior to, during, or after alteplase therapy Increased risk of bleeding prior to, during, or after alteplase therapy Increased risk of bleeding prior to, during, or after alteplase therapy Increased risk of bleeding prior to, during, or after alteplase therapy Increased risk of bleeding prior to, during, or after alteplase therapy Increased risk of an anaphylactoid reaction with concurrent use Storage: Store below 25oC. Protect from light. The reconstituted solution can be kept for up to 24 hours in a refrigerator and up to 8 hours at temperatures up to a maximum of 25°C. However, from a microbiological point of view the product should be used immediately after reconstitution. List of excipients: L-arginine, phosphoric acid, polysorbate 80, gentamicin (a trace residue from the manufacturing process). References: CDHB Blue Book (December 2013) Acute Management of Ischemic Stroke. Waitemata District health Board. Alteplase-Acute Ischaemic Stroke. February 2010 th Notes on Injectable Drugs 6 Ed. 2010 British National Formulary 68th Ed. Published September 2014 ACTILYSE Datasheet (Last updated 14/9/2012). Available from www.medsafe.govt.nz Alteplase profile. Available from www.nzf.org.nz. Accessed 15/10/2014 th Stockleys Drug Interactions 7 Ed. Pharmaceutical Press Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 18 of 67 Master Copy is Electronic Stroke Guidelines 3.2 Acute BP management first 7 Days after stroke Note: for patients receiving alteplase refer to the Alteplase guideline NZ Stroke Guideline: “There is no evidence from randomised controlled trials to guide management of blood pressure in the first week after a stroke. A cautious approach should be taken toward the treatment of arterial hypertension in the acute stage.” Patients with known hypertension, taking regular antihypertensive medication should continue their usual medications when the patient is able to take them p.o. (or has an NGT placed for another reason), as long as BP > 130-140 systolic / symptomatic hypotension is avoided. Hypotension is a common problem in those hospitalised with stroke and may result in extension of an ischaemic stroke. Hypotension should be avoided and the underlying cause treated (section 3.2.3). New antihypertensive treatment for secondary prevention of stroke can be introduced 7-14 days following acute stroke (see page 26, section 3.2.2). New antihypertensive agents should be AVOIDED in the acute phase unless: • Ischaemic Stroke: systolic blood pressure > 220 mm Hg or diastolic blood pressure > 120 mm Hg • Intracerebral haemorrhage: systolic blood pressure > 180 mm Hg or diastolic blood pressure > 105 mm Hg Acute antihypertensive protocol – ischaemic stroke: • In the exceptional circumstances where acute blood pressure lowering is required, use oral antihypertensive medications if possible, unless BP elevation is extreme (eg >240/130: see IV protocol below). Oral / NGT antihypertensives: • labetalol 100-200mg qid po/NGT is preferred in the acute stage: it has a short duration of action and minimal effect on cerebral blood vessels. • If beta-blockers contraindicated (eg severe asthma / COPD) then consider: felodipine 2.5mg; or cilazapril 0.5mg initial dose then 2.5-5mg daily. • Sublingual nifedipine should be avoided. Acute antihypertensive protocol – intracerebral haemorrhage • Intravenous antihypertensive treatment (see below) is recommended to ensure rapid reduction of BP to safer levels below 180/105. There is evidence that reducing systolic BP to 140mmHg is safe and results in a reduction in ICH progression, with weaker evidence to support an improvement in clinical outcomes. • Conversion to po/NGT regimen as above can be usually made after 24hrs. Intravenous antihypertensive protocol If SBP is 180-230mmHg or DBP 105-120mmHg (≥2 recordings; 5-10min apart): • Give IV labetalol 10mg over 1-2 minutes Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 19 of 67 Master Copy is Electronic Stroke Guidelines • The dose may be repeated or doubled every 10-20 minutes up to a total dose of 150mg Monitor BP every 15 minutes during labetalol treatment and observe for development of hypotension. If SBP >230 or DBP 121-140mmHg: • Treat with repeated doses of IV labetalol, as above, every 10 minutes up to a total dose of 150mg • If no satisfactory response, infuse sodium nitroprusside (0.5-10ug/kg per minute)* or glyceryl trinitrate (GTN)** If DBP >140 for 2 or more recordings 5-10 minutes apart: • Infuse sodium nitroprusside (0.5-10ug/kg per minute).* * Continuous arterial monitoring of BP is advised (in ICU) if nitroprusside is used. The risk of bleeding from arterial puncture should be weighed against the possibility of missing dramatic changes in pressure during infusion. ** GTN infusion: as per CDHB cardiology guidelines – 50mg in 250ml 0.9% Saline. Start at 3ml/hour and titrate in 3ml/h steps every 5 minutes. Do not use for more than 24 hours. Other options include: IV hydralazine • 5-10mg IV dose, repeat q20-30 minutes • Continuous infusion (diluted in 0.9% Saline) • 0.2-0.3mg/min initially, usual maintenance 0.05-0.15mg/min • GTN patch • Clonidine patch (note: clonidine usually takes >24h to take effect) 3.2.1 BP Monitoring Day 1: BP measurement QID • If SBP > 200 or DBP > 115 (ICH: > 180 / 105) increase BP measurement to q2h • Advise medical team if SBP > 220 or DBP > 120 (ischaemia) or BP > 180 / 105 (ICH) on 2 successive readings Day 2: BP measurement QID • for stable patients with BP > 120 / 70 and BP < 180 / 105 • More frequent BP measurements is required for patients outside these BP limits • Medical team notification as above Day 3+: BP Measurement reduced to BD • for stable patients with BP > 120 / 70 and BP < 180 / 105 (Lying and standing where applicable). • More frequent BP measurement is required for patients outside these BP limits • Medical team notification as above Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 20 of 67 Master Copy is Electronic Stroke Guidelines 3.2.2 Antihypertensive medication for Secondary Prevention after stroke or TIA NZ Stroke Guideline: “Bloodpressure pressure--lowering loweringtreatment treatmentisisrecommended recommendedfor forall allpeople peopleafter afterstroke strokeor ortransient transient Blood ischaemic attack unless the person has symptomatic hypotension. For all people presenting with an acute stroke or transient ischaemic attack, lowering blood pressure reduces the risk of a recurrent stroke and other major vascular events, irrespective irrespective of the person’s baseline blood pressure [PROGRESS trial] of the person’s baseline blood pressure [PROGRESS trial] Theoptimal optimaltime timetotostart startblood bloodpressure pressure––lowering loweringtreatment treatmentisisnot notknown, known,but butititisis The usually advisable to wait 7 –an 14 acute days after an acute stroke usually advisable to wait 7 – 14 days after stroke The combination of an angiotensin-converting enzyme inhibitor and a diuretic is of proven benefit in preventing recurrent vascular events. This benefit is seen irrespective of the the patient’s baseline blood pressure, including patients considered tonormotensive. be normotensive. patient’s baseline blood pressure, including patients considered to be There is There is insufficient to determine a beneficial effect isto specific to this insufficient evidenceevidence to determine whether awhether beneficial effect is specific this combination of combination of antihypertensive drugs whether other blood pressure-lowering drugs are antihypertensive drugs or whether otherorblood pressure-lowering drugs are equally effective.” equally effective.” • Cilazapril 0.5mg daily is recommended as a starting dose (unless ACE inhibitors are contraindicated). A documented plan is required to titrate the dose appropriately over time to 2.5-5mg daily followed by introduction of a thiazide diuretic, such as bendrofluazide 2.5mg daily. Other equivalent antihypertensive agents can be substituted for cilazapril/bendrofluazide when appropriate for individual patients. • This medication is additional to any previous antihypertensive therapy the patient had been taking at the time of stroke. • Dose titration takes TIME so will need to be managed by the GP or by stroke rehabilitation physicians. A clearly documented plan is required on the discharge summary. • It may be appropriate to defer decisions regarding appropriate long-term antihypertensive therapy for patients presenting with major severely disabling stroke, particularly when the patient is to be transferred to another inpatient facility within 714 days of stroke onset. • Patients with severe bilateral carotid stenoses should not have intensification of antihypertensive therapy until the symptomatic carotid lesion has been repaired. 3.2.3 Hypotension Avoid symptomatic hypotension. All patients should have SBP maintained >100-110. Some patients (eg those with severe bilateral carotid stenosis or carotid occlusion) may be symptomatic at “normal” levels of BP. Consider the possibility of exacerbation of stroke symptoms due to inadequate BP in any patient with progression or fluctuation of symptoms. Suggested management considerations: • Assess hydration status and correct dehydration Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 21 of 67 Master Copy is Electronic Stroke Guidelines • • • • • • • • Withdraw hypotensive medications Lie patient flat if hypotensive ECG +/- TNT to assess for AF, other arrhythmia, MI or myocardial ischaemia Treat CHF, if present Assess for blood-loss, particularly if taking aspirin or warfarin Assess for sepsis Consider bilateral full-length compression stockings Medications to elevate BP could be considered in rare cases, eg if symptoms are fluctuating while a patient is waiting for carotid intervention. 3.3 Malignant Cerebral Oedema / Hemicraniectomy Guideline 3.3.1 “Malignant Infarction” Guideline Early identification of patients at risk of “malignant infarction” • Early identification of these patients is to allow close monitoring and multidisciplinary specialist involvement in patient care. It does not imply the need for or appropriateness of any specific medical or surgical intervention. Discussion with patients or families of any specific intervention for treatment of cerebral oedema must be left to the specialist team who is offering that treatment when deemed appropriate. Criteria for close neurological monitoring and a preliminary neurosurgical opinion a) Age =<60 years b) Premorbid functioning fully independent, no major medical comorbidities c) Clinical features of a large anterior circulation ischaemic stroke. • Usually will have complete hemiplegia, hemisensory deficit, neglect and/or dysphasia, and may have gaze deviation and/or visual field deficits. • Any reduction in level of consciousness due to anterior circulation ischaemic stroke Note: Young patients with large MCA stroke who are alert at admission are at risk of deterioration in the next 24-72 hours. A reduction in GCS by 2 points that is sustained for more than 2-3 hours is an indication for urgent specialist opinion. d) Imaging Criteria: • Imaging evidence of >50% of MCA territory infarction plus • signs of significant mass effect Note: if patient meets clinical criteria a), b) and c) at admission, but not imaging criteria, then repeat CT scan is indicated if any clinical deterioration occurs, or at 24 hours. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 22 of 67 Master Copy is Electronic Stroke Guidelines 3.3.2 Malignant Infarction Guideline Procedures: • • • Physician/ RMO to consult with neurosurgical registrar at CDHB regarding the patients clinical details. If agreed the patient is a candidate for intervention and treatment, consider urgent transfer and admission to Ward 28 NPCU at CPH under “malignant infarction” guideline. If requiring further information regarding ‘malignant infarction” guidelines please see CDHB Stroke Guidelines. Neurological deterioration: Deterioration in level of consciousness: eg drop in GCS by 2 or more points that is sustained for more than 2-3 hours or New brainstem or cranial nerve signs (eg Unilateral Pupil enlargement >=2mm from baseline) • Urgent medical review then urgent CT head – results are communicated to Neurology Consultant. • Neurology consultant determines whether urgent Neurosurgical opinion is required. Guidelines for urgent Neurosurgical opinion regarding hemicraniectomy • Clinical deterioration to loss of consciousness or new brainstem/CN signs suggesting coning and/or • Imaging shows space-occupying MCA infarction with midline shift and compression of the lateral ventricles &/or basal cisterns; enlargement of contralateral lateral ventricle is of particular concern Medical management of brain swelling due to infarction: Indication: • Patient has lesser neurological deterioration and does not (yet) meet criteria for Hemicraniectomy. Definitive decision regarding Hemicraniectomy is recommended within 24-48h of stroke onset. • Patient has been determined as being permanently ineligible for Hemicraniectomy or Mannitol • 1g/kg/day (generally for no more than 24 hours ) • bolus 0.5g/kg over 20 minutes • repeat doses usually 0.25g/kg • serum osmolality should be tested at 24 hours and maintained <315mosmol/l • If medical treatment for brain swelling is required for >24 hours, other options could be considered, including: Glycerol (NG); Frusemide 40-80mg IV; Hypertonic saline. Stroke Guidelines Page 23 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines 3.4 Acute Management of Intracerebral Haemorrhage Many aspects of acute management of intracerebral haemorrhage (ICH) are similar to ischaemic stroke, particularly the benefit of stroke unit care, maintenance of homeostasis and early rehabilitation. There are some important differences however: • Avoid aspirin, heparins and thrombolytic agents. • Full coagulation screen is required urgently. • If taking oral anticoagulants, this is a life-threatening emergency and immediate action to reverse the anticoagulant effect is required (if this is possible). See Reversal of the Warfarin related coagulopathy below. Acute blood pressure management: the threshold for considering use of IV antihypertensive agents in the acute phase of stroke is lower in patients with ICH (>180/105) compared with ischaemic stroke (>220/120). More aggressive BP lowering to systolic BP <140mmHg is associated with reduced expansion of ICH. See Acute BP management first 7 days after stroke, Section 3.2. Neurosurgical referral should be considered for potentially life-threatening ICH in previously neurologically well patients who have cerebellar ICH or superficial supratentorial ICH. Please consult with physician/ on-call physician and/or Neuro registrar at CDHB. See Blue Book Section 18.3.5 re investigations 3.5 Intracerebral Haemorrhage whilst on warfarin: Reversal of the warfarin related coagulopathy Background • ICH whilst taking warfarin is life threatening medical emergency with a mortality of between 43-70% at 30 days. • Initial ICH volume and further haemorrhagic expansion are both independent predictors of mortality • ICH volume is not maximal at the outset but can continue to increase for several hours or up to 24-48 hours if taking warfarin. • Most warfarin related ICHs occur with the INR within the “therapeutic” range. • Warfarin causes functional deficiencies of several different clotting factors which need immediate replacement in the setting of ICH whilst taking warfarin. Reversal Guidelines • Any patient with both (1) an acute intracerebral haemorrhage and (2) taking warfarin should have immediate intravenous reversal of the coagulopathy. This includes • Stop warfarin • Give Vitamin K 5-10 mg intravenously immediately • Give Prothrombin complex concentrate (PCC) 50 units / kg intravenously immediately • Give Fresh Frozen Plasma (FFP- 150-300ml) (1-2 units) Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 24 of 67 Master Copy is Electronic Stroke Guidelines Notes: • Vitamin K takes 6-24 hours to be effective • Prothrombin complex concentrate (PCC) rapidly reverses the coagulopathy within 15 minutes. It is accessed by either o Following “life threatening bleed on warfarin” protocol in Emergency Department (warfarin reversal pack to accompany patient to CT scanner from ED). o contacting New Zealand Blood Service Doctor on call. • If PCC is NOT available, vitamin K (as above) and larger doses of FFP can be given (at a dose of 15-30ml/kg) but produces suboptimal anticoagulation reversal. Monitoring • INR is not useful for monitoring the effectiveness of clotting factor replacement. It is only useful for monitoring warfarin use in steady state situations. • Monitoring should be done immediately after treatment using a coagulation screen (INR, APPT, Thrombin time and fibrinogen). If still abnormal, more coagulation factors should be given immediately. • If normal recheck in 4-6 hours (reflecting shortest half life of factor VII and vitamin K onset of action). • If normal again, then recheck at 24 hours, or sooner if patient clinically unstable. • The risk of thrombotic events during this short term reversal appears very low, even in patients with prosthetic heart valves. Oral thrombin inhibitors (Dabigatran) related ICH Like warfarin related ICH, these patients need urgent reversal of the coagulopathy. See notes in Blue Book Section 14.8.5 (CDHB Haematology) for dabigatran reversal. Longer term management This requires an individual assessment of the risks and benefits of restarting warfarin or not. Most should not restart warfarin, but it is dependent on indications for anticoagulation, location and severity of bleed, comorbidities, age and concurrent medications. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 25 of 67 Master Copy is Electronic Stroke Guidelines 4 Inpatient Care 4.1 The Acute Stroke Swallow Screen for dysphagia trained nurses Purpose Suspected or confirmed acute stroke patients should be kept NBM until they receive Acute Stroke Swallow Screen by a Speech and Language Therapist or by a certified dysphagia trained nurses or completed by RMO/Registrar. If completed in ED/Medical ward by an RMO/’Registrar the finding must be clearly documented in the clinical notes. If a patient has no swallowing issues identified on the screen, they may receive their normal diet. If issues are identified then the patient will remain NBM until formal assessment by SLT. This aims to: • To improve early identification of dysphagia and aspiration risk. • To reduce inappropriate referrals to SLT. • To meet New Zealand Guidelines for Management of Stroke regarding swallowing • To ensure a safe and high quality service that is consistently delivered to patients with acute stroke and their family/whānau. Speech-Language Therapist’s Role To assess patients who • have an abnormal result on the screen, • meet the exclusion criteria within the WCDHB Nurse Dysphagia Screening policy, • are currently being managed by SLT services. To organise and implement instrumental/diagnostic assessment of swallowing, e.g. videofluoroscopy. Nurse’s Role To screen all new patients admitted with an acute stroke as per WCDHB Nurse Dysphagia Screening policy. To provide initial training session for nurses as per WCDHB Nurse Dysphagia Screening policy. To complete initial training and competency requirements as per WCDHB Nurse Dysphagia Screening policy. To provide annual refresher training sessions for nursing staff already trained in Acute Stroke Swallow Screen to maintain their competencies. Nursing staff to maintain competency as per WCDHB Nurse Dysphagia Screening policy. NOTE: Only Nurses who are trained to assess using the Dysphagia Screening Policy can assess any patient. Any communication issues identified during the screen to be referred to SLT as per usual referral procedures. To provide management of those patients identified as presenting with dysphagia or aspiration risk, as per departmental dysphagia protocols. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 26 of 67 Master Copy is Electronic Stroke Guidelines At present the implementation of a WCDHB Dysphagia Screening Policy is being piloted and trailed. Selected Nurses within the Medical Ward are receiving competency based education and training. As the tool is still within the trail phase, once completed the tool and Dysphagia Screening Policy has been finalised and a copy of the tool will be inserted on the page below. NOTE: Only Nurses who are trained to assess using the Dysphagia Screening Policy can assess any patient For further information on the Acute Stroke Swallow Screen and/or training please refer to the WCDHB Nurse Dysphagia Screening policy. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 27 of 67 Master Copy is Electronic Stroke Guidelines This page has been left blank intentionally. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 28 of 67 Master Copy is Electronic Stroke Guidelines 4.2 Communication for patients with disability following stroke Patients admitted to Greymouth Hospital with suspected communication disability following stroke will be referred to the Speech-Language Therapy service. The patient should have initial contact and a management plan in place within 48 hours. The management plan will include: • Information about diagnosis • Strategies for effective communication with staff and family • Written information will be provided about the communication disorder. • Ideally training for staff in supportive communication strategies for successful communication with patients post stroke will be provided. Communication diagnosis following stroke are: Aphasia: (also known as dysphasia). Aphasia is a language condition that affects one or all of the modalities of speech, writing, reading and auditory comprehension of language. “Aphasia” is the internationally preferred term for researchers and consumers affected by the condition. It can be classified into fluent and non-fluent types of aphasia. Non-fluent aphasias are; Broca’s aphasia, trans-cortical motor aphasia and anomia. Fluent aphasias are; Wernicke’s aphasia, trans-cortical sensory aphasia and conduction aphasia. Aphasia can present in a range of severities and has ongoing social consequences for participation in life events and wellbeing for patients and families. For more information about best practice guidelines in the rehabilitation of aphasia please refer to: www.aphasiapathway.com.au Apraxia: Apraxia of speech is a motor speech disorder that affects the initiation and sequencing of speech sounds. A person may have reduced dysdiadochokinesia and exhibit more difficulty with longer words and phrases. It often co-occurs with aphasia and can be present with people who present with non-verbal communication. Dysarthria: Is a motor-speech disorder that affected the muscles involved in speech production. It may present in a number of ways and is characterised by slurred speech. Speech intelligibility is affected but literacy is usually preserved. There are a range of classifications of dysarthria: flaccid, spastic, ataxia, hyperkinetic, hypokinetic, unilateral upper motor neuron and mixed 4.3 Hydration Guideline 4.3.1 Guideline for hydration after acute stroke Dehydration is a common and avoidable problem after acute stroke. Patients are frequently unable to eat or drink adequately or are made ‘Nil by mouth (NBM)’. Dehydration can result Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 29 of 67 Master Copy is Electronic Stroke Guidelines in discomfort, hypotension and decreased cerebral perfusion. Avoidance of both dehydration and hypotension are associated with improved patient outcomes after stroke • All patients who are NBM [or have limited oral intake] after acute stroke should either be prescribed parenteral fluids or have nasogastric tube (NGT) placement to allow feeding, if they are not being managed in a palliative manner. • For parenteral fluids, subcutaneous administration should be considered if there is no other indication for IV cannulation. An IV line in a paretic arm can result in an oedematous limb, and an IV line in a non-affected arm can result in a patient having two ‘non-functional’ arms. Both of these problems are avoided by using the subcutaneous route administered over the trunk area. • In general, 2 litres of fluid per day is required (Total fluid volume per 24hrs = 30-40 mls/kg body weight), however caution is needed for patients with congestive heart failure or raised intracranial pressure • Prescription of parenteral fluids must be tailored to individual patient needs. Particular care is required when the patient is NBM or has very low oral intake and therefore reliant on parenteral fluid replacement for all of their hydration needs. o Exclusive use of hypotonic dextrose-saline or 5% dextrose can result in hyponatraemia o Exclusive use of normal saline can result in volume overload or hypernatraemia o The patient’s daily oral fluid intake should be recorded • Hyperglycaemia is associated with poor outcome after stroke and, as a general recommendation; direct intravenous administration of glucose-containing fluids should be avoided when possible. Normal saline will generally be the intravenous fluid of choice, but cannot be used as the only source of hydration (as above) • If glucose-containing fluids (dextrose-saline or 5% dextrose) are required, to maintain correct fluid and electrolyte balance, the subcutaneous route of administration is recommended when possible. • If patients remain NBM longer than 48-72 hours, NGT placement to allow full hydration and nutrition if appropriate should be considered. This should be a TEAM decision to ensure all relevant issues are addressed 4.4 Nutrition Guideline 4.4.1 Guidelines Nutrition Guidelines for Acute stroke patient 4.4.2 All Patients 1. Patients are to be weighed within 24 hours of admission (where appropriate) and on discharge from the acute medical/ Rehabilitation ward. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 30 of 67 Master Copy is Electronic Stroke Guidelines 2. Monitoring of oral intake should occur for all patients, with food charts kept for those with marginal intake. 3. Serum glucose, CRP, creatinine, and electrolytes 4.4.3 Patients receiving ongoing dietetic input 1. Twice weekly weigh. 2. Weekly biochemistry as indicated. 3. Albumin, urea, pre-albumin if requested. 4.4.4 Patients receiving enteral feeding 1. Twice weekly weigh. 2. Food and fluid charts to be kept during transition periods. 3. Magnesium, phosphate, potassium, calcium, glucose and sodium for patients suspected to be at risk of re-feeding syndrome. If results are subnormal, correction is required. Clarifying the most appropriate way of correcting these, will require discussion between dietitian and medical staff prior to commencing feeding. 4. All patients who are at risk of re-feeding syndrome should be given thiamine and a multivitamin prior to commencing feeding. 4.4.5 Decision to institute enteral feeding This is a complex decision that requires input from all MDT members. Decisions should be tailored to individual needs and circumstances. In general: • Enteral feeding will not normally be considered within 48 hours of stroke onset for purely nutrition requirements (but could be considered if there were a need for NGT placement for other reasons, eg essential oral medications). • If patient remains NBM for longer than 48-72 hours, then discussion needs to begin with the patient, their family and the team about all the relevant issues. These include patient preferences, prognosis, dysphagia, nutrition/hydration and other issues. Other factors to consider include (but may not be limited to): • Previous nutritional status • Ability to participate in rehabilitation (active rehab may require nutritional support) • Trends of improvement in swallowing / oral nutrition intake • Prognosis: ‘comfort’ vs ‘active’ care issues • Importance of oral medications (eg some anticonvulsants) requiring NGT • Patient preference • Logistical concerns – ease of NGT placement / maintenance • Discharge / placement plans Gastrostomy (usually PEG) tube placement • should be considered only when long-term nutritional support is required Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 31 of 67 Master Copy is Electronic Stroke Guidelines 4.5 Diabetes Guidelines 4.5.1 Guideline for Hyperglycaemia after Acute Stroke There is an association between hyperglycaemia and poor outcome after stroke. At present there is a paucity of information on hyperglycaemia interventions, thus there is insufficient evidence to support aggressive treatment of hyperglycaemia for all patients after stroke. Stroke may represent the first clinical presentation of diabetes or impaired glucose tolerance. Current NZ recommendations suggest that management of stroke patients with hyperglycaemia should be “the same as for other medical patients”. However, management of hyperglycaemia and diabetes after stroke is sometimes complicated, for example due to reduced dietary intake when patients are made ‘Nil by Mouth’ (NBM), or by the use of nasogastric feeding. European stroke guidelines recommend maintenance of BSL <10mmol/L, American (ASA) guidelines recommend intervention if BSL>16.7mmol/L. The aim of these guidelines is to encourage a consistent approach to management of hyperglycaemia and diabetes after stroke. 4.5.2 General Recommendations: • All patients who are NBM (or have limited oral intake) after acute stroke should either be prescribed parenteral fluids for hydration or have nasogastric tube (NGT) placement to allow feeding. • Normal saline will generally be the parenteral fluid of choice, unless as part of a dextrose plus insulin infusion protocol. • If patients remain NBM longer than 24-48 hours, NGT placement to allow feeding and full hydration should be considered. • Goal BSL 4-10 mmol/l premeal (ideally 4-7 mmol/l). Post prandial < 15 mmol/l (ideally around 10mmol/l Hypoglycaemia should be avoided. 4.5.3 Management of Patients with Known Diabetes or Documented Hyperglycaemia BSL Measurement • Measure BSL two hourly from 0800-2200 (or pre and 2 hours post meal if eating meals), and four hourly if stable from 2200 to 0800 over the first 24 hours. • If stable, BSLs can then be checked four times daily, prior to meals if the patient is eating. If however, BSLs are unstable, and/or insulin boluses, or intravenous insulin are required, more frequent BSL monitoring (two hourly or more) will be necessary. 4.5.4 All Diabetic Patients Post Stroke Oral Antidiabetic Agents • Stop sulphonylureas and Acarbose unless patient is on usual diet. • Continue metformin and/or Thiazolidinediones (eg Rosiglitazone and Pioglitazone), if the patient is usually on them and if there are no other contraindications. Use of PRN Insulin Novorapid insulin boluses, usual dose 10-20% of total daily insulin dose, may be used if BSL is greater than 15mmol/L up to two hourly. More frequent BSL monitoring (two hourly or more) will then be required. If patients are requiring repeated doses, the diabetes regimen Stroke Guidelines Page 32 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines should be reviewed and intra-venous insulin may need to be considered. Liaison with the Diabetes team is recommended. 4.5.5 Insulin Requiring Diabetes NBM Use twice daily Protaphane, with total daily dose to equal half of usual (premorbid) daily insulin requirements. Additional boluses of Novorapid, of around 10-20% of total daily insulin dose may be required if BSL> 15mmol/L. The daily insulin dose can then be titrated up or down depending on blood sugar recordings, aiming to keep blood sugars between 4 and 10mmol/L. Enteral feeding This is a complex situation, particularly when feeding is commenced. Liaison with the Diabetes team is recommended. Factors to be considered include stability/reliability of the feeding tube, rate, timing and frequency of feeding. Twice daily Protaphane as for NBM patients to cover basal insulin requirements could be considered. Novorapid boluses could be used to cover feeding regimen. Intra-venous insulin infusions may be suitable for unstable patients. Impaired oral intake Use twice daily Protaphane with total daily dose to equal half of usual (premorbid) daily insulin requirements, plus Novorapid after food varied to match intake. For example: Daily Novorapid dose to equal half of total daily premorbid insulin. Divide this dose by three and give post meal in proportion to oral intake eg: None of meal eaten Do not give Novorapid Half of meal eaten Give half of Novorapid dose Entire meal eaten Give total Novorapid dose. (For example if usual premorbid Protaphane dose is 36units, give 9 units of Protaphane twice daily, plus 6 units of Novorapid after a meal, if the entire meal is eaten). Normal Diet Give usual insulin dose and antidiabetic agents if no contraindications. Top up Novorapid may be required if blood glucose > 15mmol/L. 4.5.6 Type 2 Diabetes On Maximal Oral Antidiabetic Agents Plus Nocturnal Protaphane See guidelines for All Diabetic Patients Post Stroke (section 4.4.4) NBM Give half of nocturnal Protaphane dose twice daily Enteral Feeding Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 33 of 67 Master Copy is Electronic Stroke Guidelines Give a total daily dose of insulin that is one and a half times the usual nocturnal Protaphane dose. Give half of this total dose twice daily. (The total insulin dose is greater than premorbid dose to cover the withdrawal of sulphonylureas.) Novorapid boluses could be used to cover feeding regimen. Intra-venous insulin infusions may be suitable for unstable patients. Liaison with the diabetes team is advised Impaired oral intake Give one and a half times nocturnal Protaphane dose divided by two, twice daily. Novorapid boluses may be required after meals as per other insulin requiring patients and for blood sugars > 15mmol/L. Normal Diet Give usual insulin and oral antidiabetic agents 4.5.7 Type 2 Diabetes on Diabetic Diet Alone or Antidiabetic Agents See guidelines above for All Diabetic Patients Post Stroke for instructions regarding antidiabetic agents (section 4.4.4) NBM See guidelines above for all diabetic patients post-stroke Enteral Feeding Insulin may be required. Consider use of Novorapid for BSL > 15mmol/L. Liaison with the diabetes team is advised. Impaired oral intake If blood sugars are greater than 15mmol/L Novorapid may be used. Liaison with the diabetes team is advised Normal Diet Prescribe usual oral antidiabetic agents. 4.5.8 Patients with Raised Blood Sugar on Admission Not Previously Diagnosed with Diabetes • Patients with non-fasting blood glucose of >11.1mmols/L or fasting blood glucose of >7.0mmols/L may have undiagnosed diabetes and/or be at risk of poor outcome after stroke. • Although HbA1C is not a diagnostic test for diabetes, it may help to differentiate temporary stress hyperglycaemia from undiagnosed diabetes. • If glucose is initially high (>/= 12mmol/L) and remains high and/or HbA1C is >8% consider treating with insulin during the acute post-stroke period as per insulin requiring diabetes. • Liaison with the Diabetes team is recommended These guidelines are a recommendation only. Patients with unstable blood sugars may be best managed with intra – venous insulin infusions (see Blue Book guidelines). Liaison with the Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 34 of 67 Master Copy is Electronic Stroke Guidelines diabetes team is recommended for most patients who have altered insulin requirements or difficult blood glucose control 4.6 Transferring Patient from Bed to Chair Guidelines 4.6.1 Transferring Checklist Checklist for transferring a patient with stroke 1. Is the person receiving alteplase? YES - Must stay in bed for the first 24 hours NO - Continue LYING ON THE BED 2. Can they move the affected side? YES NO 3. Are they aware of the affected side? YES NO SITTING ON THE BED 4. Can they straighten the affected knee? YES NO 5. Can they sit, with feet on the floor without help? YES NO If ‘NO’ to any of the questions 2 – 5 hoist transfer until physiotherapy assessment and recommendation is made If ‘YES’ to all of the questions 2 – 5 try transferring the patient. • Make sure feet are flat on the floor and positioned under the knees • Adjust the height of the bed to >90 a t the hips a nd kne e s • Use a transfer belt – do not hold under the armpit. • Use a Montreal sling if the affected arm is floppy. • Use two people for safety • Prepare to brace the affected knee in case it gives way on standing. • Transfer towards the unaffected side through 90 4.7 Management of the Hemiplegic Upper Limb Purpose Consistent and evidence based interdisciplinary approach in the management of the hemiplegic upper limb. Scope This document is to be used as a guide to facilitate management of the hemiplegic upper limb throughout the West Coast District Health Board. Those working in the West Coast District Health Board are to refer to this guideline as a foundation for the management of the hemiplegic upper limb. Specific treatment techniques and procedures should be client-centred and involve an interdisciplinary approach in decision making. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 35 of 67 Master Copy is Electronic Stroke Guidelines 4.7.1 Assessment of the Hemiplegic Upper Limb Assessments used in stroke rehabilitation should be valid and reliable measures. They can be used to differentiate among subjects to predict outcomes, to quantify and evaluate patients’ progress and the effectiveness of interventions. Assessments aid in providing timely identification of risk factors, providing a logical basis for treatment, structuring goals and prioritising clinician’s time and resources. Action 1. Physiotherapist and Occupational Therapist select the appropriate assessment measure. The therapist may use but is not limited to the following measures: Chedoke-McMaster Stroke Assessment, Motor Assessment Scale, The Tardieu Scale (See next page) 2. The therapist documents the outcome of the selected measure and forms a treatment plan. Suggested Measures Chedoke-McMaster Stroke Assessment The Chedoke-McMaster Stroke Assessment has been shown to have good reliability and validity. It consists of two parts, a Physical Impairment Inventory and a Disability Inventory. The Physical Impairment Inventory is divided up into six dimensions which include measures of shoulder pain, postural control, the arm, the hand, the leg, the foot. Each dimension is measured on a seven point scale which correlates to seven stages of motor recovery. The Disability Inventory is designed to measure clinically significant changes in physical disability and is divided into the Gross Motor Function Index and the Walking Index. Motor Assessment Scale The Motor Assessment Scale is a measure of motor impairment and mobility based on a format of functional task observation. It consists of eight tasks including supine to side lying onto the intact side, supine to sitting on the side of the bed, balanced sitting, sitting to standing, walking, upper arm function, hand movements and advanced hand activities. Each item is scored on a seven point scale. The Motor Assessment Scales has been documented to have good validity and reliability. The Tardieu Scale The Tardieu Scale should be used to measure spasticity clinically. The affected limbs are passively moved through range as slowly as possible (V1) and as quickly as possible (V3). The quality of the muscle reaction to stretch (X) is measured at each velocity and the angle of the muscle reaction (Y) is also recorded. The Tardieu Scale is a more accurate tool to measure spasticity in upper and lower limb muscles compared with the Ashworth scale as velocity of stretch is altered to identify the presence of spasticity and also the presence of contracture. Ideally tone assessment using the Tardieu scale should be completed and reviewed at the same time of day. 4.7.2 Pain Pain is a common problem following stroke and can limit an individual’s ability to participate in ongoing therapy causing further problems in relation to recovery. People who have had a stroke may experience pain of several types including mechanical, central post stroke pain and pain from pre morbid disease such as osteoarthritis. Most pain is mechanical, arising from reduced mobility, poor alignment and poor integrity of the glenohumeral joint. Hemiplegic shoulder pain tends to be less common in the acute stages of stroke but increases over time due to secondary biomechanical changes. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 36 of 67 Master Copy is Electronic Stroke Guidelines Action Pain should be assessed regularly by all staff. Pain location and intensity should be documented in the notes using the Visual Analogue Scale as a standard baseline assessment. 1. Pain should be prevented by the following: a. Education of staff and carers about correct handling and positioning of the hemiplegic arm. b. Avoiding the use of overhead arm slings, which encourage uncontrolled abduction 2. People with stroke who have musculoskeletal pain should be: a. Assessed by specialist therapists for potential alleviation through exercise, passive movement, improved seating or other procedures. b. Prescribed appropriate analgesics where non-pharmacological treatments are ineffective 3. For established shoulder pain: a. Simple interventions should be used first (eg analgesia, non-steroidal antiinflammatory) b. If simple measures do not work, the treatment option of high-intensity transcutaneous electrical nerve stimulation (TENS) may be considered post the acute phase but not restricted to this. 4. People with stroke who have central post stroke pain: a. Neuropathic pain may respond to tricyclic antidepressants (eg amitriptyline) or anticonvulsants (eg gabapentin) b. People with intractable pain should be referred to a specialist pain service as soon as possible 4.7.3 Positioning Positioning of people who have had a stroke and provision of appropriate seating may prevent the development of contractures, abnormal tone, pain, skin breakdown and respiratory complications. Staff should position people, whether lying or sitting, to minimise the risk of complications such as aspiration, respiratory complications, shoulder pain, and contractures. Action 1. Educate staff and carers of correct handling and positioning of hemiplegic arm. 2. Positioning charts placed above person’s bed if appropriate following assessment by physiotherapist or occupational therapist. 3. Staff should attempt to maintain external rotation, abduction, and flexion of hemiplegic shoulder. 4. Shoulder should not be passively moved beyond 90 degrees of flexion and abduction unless the scapula is upwardly rotated and the humerus is laterally rotated. 5. Upper limb must be handled carefully during functional activities to prevent pain. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 37 of 67 Master Copy is Electronic Stroke Guidelines 4.7.4 Sensation Impaired sensation affects people following a stroke. Sensation plays an important role in the execution of skilled fine motor tasks, activities of daily living and mobility. Altered sensation affects sensory feedback in the sensory-motor loop therefore increasing recovery times. Sensory information that can be affected includes: touch, pain, temperature, superficial pressure, vibration, proprioception and presence of sensory inattention. Action 1. Assess changes in sensation and record findings in notes. 2. Educate staff and carers in the role that sensation plays in rehabilitation. 3. Sensory re-education as appropriate. 4.7.5 Shoulder Subluxation Shoulder subluxation after stroke is a significant problem. The reported incidence of post stroke shoulder subluxation is high (up to 80%) and may contribute to impaired function and shoulder pain (Linn et al 1999). Weakness of the muscles surrounding the shoulder results in prolonged stretching of the joint capsule, causing capsule damage and subluxation (Faghri et al 1994). A recent Cochrane systematic review found that there is limited evidence in prevention of shoulder subluxation. Supportive devices can provide immediate effect in reducing subluxation in the shoulder that is already subluxed (Ada 2005). Action 1. Staff will monitor the hemiplegic upper limb and will inform the team if subluxation occurs. 2. If shoulder subluxation is noted by any staff member an assessment should be completed, including but not limited to: history of previous shoulder impairments, palpation, sensation, cognition, pain, range of motion and x-ray. 3. If shoulder subluxation is identified management techniques can include but are not limited to: shoulder strapping, lap tray, arm trough, triangular/collar & cuff sling, positioning in bed and education to staff and carers on appropriate handling techniques. 4. It is recommended the above supportive devices should be applied as soon as the patient is allowed in an upright position. 4.7.6 Oedema Following a stroke, people with a hemiplegic upper limb are at risk of developing oedema due to immobility. Oedema has implications on function, skin integrity, pain, circulation and aesthetics. Action 1. All staff will monitor the hemiplegic upper limb for oedema. 2. If oedema is noted by any staff member it will be brought to the attention of the relevant staff for management. The therapist will consider the following factors: positioning, 24 hour management, type of oedema, history, differential diagnosis, implications for concurrent treatments, impact on function, daily routines, pain and presentation. 3. The interdisciplinary team will initiate techniques to manage oedema and prevent further oedema from occurring (See Appendix below) Stroke Guidelines Page 38 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines Management Techniques for Oedema Management techniques: positioning, pressure garments, passive/active assisted/active range of movement exercises, electrical stimulation 4.7.7 Spasticity Spasticity is defined as a motor disorder characterised by a velocity dependent increase in resistance to passive stretch of muscles with hyperactive muscle stretch reflexes (Lance 1980). Spasticity typically presents as flexor tone of the upper limb. The scapula retracts and depresses, internally rotates and adducts the shoulder, flexes the elbow, pronates the forearm and flexes the wrist and hand. Spasticity limits shoulder abduction, flexion and external rotation. Spasticity and shoulder pain are related. Therefore range of motion should be monitored and maintained as much as possible to help reduce development of hemiplegic shoulder pain. It is now known that spasticity (i.e., hyperactive stretch reflexes) is not a major determinant of activity limitations. Interventions to reduce spasticity may be considered if the level of spasticity interferes with activity or the ability to provide care to those with stroke (Van Kuijk et al 2002). Action 1. If the person has spasticity, complete the appropriate spasticity scale. If the person has decreased tone consider preventative management techniques. 2. The therapist will provide positioning and supports as indicated by assessment. 3. Spasticity should be monitored and regularly re-assessed using the selected scale. 4.7.8 Splinting Splints are sometimes used as a means of intervention to reduce spasticity and prevent contracture after stroke. Clinical aims for splinting adults following stroke include: reduction of spasticity, reduction in pain, improvement of functional movement, prevention of contracture, prevention of overstretching and oedema. While there is limited published evidence to either support or refute the effectiveness of hand splinting for adults following stroke, one recent randomised study suggested it should not be routine practice for most patients with hand weakness soon after stroke (Lannin 2007). Action 1. If a splint is indicated a physiotherapist or occupational therapist will conduct an assessment of the upper limb. 2. In the assessment process the therapist will take the following factors into consideration: oedema, sensation, skin integrity, presentation, positioning, tolerance, biomechanical changes, other impairments, daily routines, function, removability, compliance, dynamic splint versus static splint, carers/family and goal of splinting. 3. The therapist will also assess and document in the notes all precautions prior to splinting. If any precautions are identified the therapist will document reason for proceeding with splinting ( See section 4.6.8.1 below) Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 39 of 67 Master Copy is Electronic Stroke Guidelines 4. If the therapist and the interdisciplinary team agree that splinting will benefit the person the therapist will use clinical judgement to choose the material, design and goal of the splint. 5. The person/carer/staff will receive education by the therapist regarding splint wearing schedules, splint care and cleaning, and monitoring of skin integration. 4.7.8.1 Precautions to Splinting Precautions include but are not limited to: uncontrolled intracranial pressure, heterotrophic ossification, poor skin condition, oedema, sensory impairment, acute inflammation, vascular impairment, behavioural impairment, concomitant fracture, cognitive impairment, severe soft tissue injury, uncontrolled epilepsy, medically unstable condition, medical procedures requiring access to limb. 4.7.9 FES Functional Electrical Stimulation (FES) includes superficial application of electrodes to specific motor points in order to stimulate peripheral nerves and muscle fibres. It can be used to increase motor activity/control, reduce spasticity, improve range of motion and prevention of shoulder subluxation following stroke (Ada and Foongchomcheay 2002). Contraindications for FES People who have a Pacemaker or other electrical stimulator, areas with PVD (more likely to create skin breakdown), excessive adipose tissue in area of stimulation, areas of neoplasm, internal fixation (where metal is within the area of electrode placement, or where there is a strong electrical stimulus), people who are unable to give adequate feedback, pregnancy – do not apply on trunk areas, over thoracic region and carotid sinus. FES can also be used to increase pain free range of external rotation (Price and Pandyan 2000). If indicated FES should be initiated as soon as possible following a stroke. Action 1. The physiotherapist or occupational therapist will complete an assessment of the upper limb and identify whether FES is indicated for that person. See Appendix 4 for list of Contraindications. 2. If indicated electrodes will be placed over posterior deltoid and supraspinatus muscles at appropriate parameters for shoulder subluxation. 3. Treatment with FES should be continued until the patient has adequate control of the glenohumeral joint. 4.7.10 Strapping Recent literature suggests that shoulder strapping has potential to reduce the incidence and or severity of shoulder pain however studies are limited. The theories behind the benefits of shoulder strapping include: mechanical alignment, stimulation of flaccid muscles and proprioceptive input. In addition, strapping can act as a reminder to carers and staff of the extra care needed with handling which can increase the number of pain-free days (Griffin & Bernhardt 2006). Action 1. Shoulder assessment completed by the physiotherapist or occupational therapist. Stroke Guidelines Page 40 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines 2. If the therapist deems strapping would be beneficial based on clinical reasoning and evidence based practice the therapist will perform the appropriate strapping technique. 3. The therapist will monitor the person’s progress and reaction if any to the strapping. 4. Education to staff and carers will be provided in regards to the care and monitoring of the strapping. 4.8 DVT / PE Prophylaxis Guideline 4.8.1 Venous Thromboembolism Prevention in Stroke Patients Background: • Deep venous thrombosis (DVT) and pulmonary Thromboembolism (PTE) are recognised complications following a stroke. • Pulmonary embolism is detected in 0.8% of acute stroke patients within the first 14 days.1 Mortality from PE may be as high as 50%2 but fatal PE is rare within the first week following stroke.3 • In rehabilitation settings, symptomatic DVT’s occur in 10-15% of patients and deaths from pulmonary emboli occur in approximately 2%. • The risk of developing venous thromboembolism is higher in patients who are immobile with a paralysis of the leg. Those who are very immobile such as those who are bed-ridden or wheelchair bound are at greatest risk. • A variety of agents have been shown to be effective in the prevention of DVT and PTE in other (non-stroke) high risk patients including post-operative patients. These include Aspirin, unfractionated (standard) Heparin subcutaneously, low molecular weight Heparin (LMWH) sub-cut, low dose Warfarin, graduated compression stockings (GCS) and intermittent pneumatic compression (IPC) devices. • In acute stroke patients, prevention of DVT/PTE with anticoagulants is complicated by the risk of haemorrhagic transformation of the new cerebral infarct. Such haemorrhagic transformation can increase both morbidity and/or mortality. This risk of haemorrhagic transformation reduces over time (first 1-2 weeks). Thus for any intervention, the risks and potential benefits need to be carefully weighed up. • The ideal timing for starting of anticoagulants for DVT prophylaxis after stroke is not known. • Graduated compression stockings have been shown to be ineffective in prevention of DVT and PE after stroke • Intermittent pneumatic compression (IPC) in immobile patients has been shown to reduce DVT after stroke with a trend to increased 30-day survival and no increase in falls with injury. However, there are logistical difficulties with implementation of this treatment, including some concerns that rehabilitation efforts might be impeded. 4.8.2 Guidelines for the prevention of Venous Thromboembolism All stroke patients: • Early mobilisation and optimal hydration should be maintained from the outset. • Graduated compression stockings should not be used routinely for DVT prevention after stroke. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 41 of 67 Master Copy is Electronic Stroke Guidelines For patients with ischaemic stroke only: Aspirin 150 – 300mg per day should be given unless contra – indicated (lower aspirin doses have not been studied specifically with regard to DVT prophylaxis following stroke). Prophylactic anticoagulation should not be routinely administered for deep vein thrombosis prophylaxis immediately after stroke, because of the risk of haemorrhagic transformation within an infarct. Prophylactic anticoagulation or intermittent pneumatic compression devices may be considered after the first 2 or 3 days of stroke in immobilised people with additional high risk factors for DVT/PE such as: • intolerant of aspirin • unable to lift each leg off the bed • past history of DVT or PE • morbid obesity • known history of inherited Thrombophilia For immobile patients, a decision regarding the plan to use or not use anticoagulants for DVT prophylaxis should be documented in the patient’s notes by 7 days after stroke onset. If anticoagulants are to be used for DVT prophylaxis after stroke, the recommended regimen is: • enoxaparin 40mg daily sc (with dose adjustments for renal impairment, Fu =0.7) • aspirin should be continued The optimal duration of anticoagulant therapy for DVT prophylaxis is not known. Pulmonary embolism is a very important cause of death after stroke between weeks 2 and 4 For patients with Intracerebral Haemorrhage The best evidence available supports use of intermittent pneumatic compression devices for DVT/PE prophylaxis for immobile patients with ICH. The benefit from this treatment appears greatest for patients who are unable to raise both legs off the bed or have other high-risk features for DVT/PE. Anticoagulants are generally contraindicated after an acute ICH. There may be some circumstances when the benefits of anticoagulation are considered to outweigh the risks. Risks of further or worsened intracerebral bleeding are higher early after the bleed, and with lobar bleeds. DVT prophylaxis after ICH • Anticoagulants are generally not recommended for most ICH patients as the risk is likely to outweigh any benefit • Pneumatic compression stockings should be used for immobile patients with ICH, particularly those who are unable to raise both legs independently off the bed or have other high-risk factors for DVT/PE. The role of DVT monitoring with ultrasound to guide treatment is not established These guidelines apply to prevention of DVT / PTE only. Treatment of established venous thromboembolism requires careful analysis of the benefit to risk ratio in each individual patient. Temporary IVC filter placement can be considered in patients with Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 42 of 67 Master Copy is Electronic Stroke Guidelines significant DVT burden who are considered at high risk of haemorrhage if anticoagulated 4.9 Urinary Incontinence 4.9.1 Stroke Continence Protocols Vision Bladder continence identified and managed in stroke from acute admission through rehabilitation. Scope All clinical staff, patients and patient’s families. Background Urinary incontinence (U.I.) is common following stroke (reportedly 32-79% of patients – preexisting for some). (Williams, Perry and Watkins, 2010) Bowel function is also often affected, especially constipation which is related particularly to functional ability/immobility. Background Policy Statements 1. Urinary incontinence is not an indication for an indwelling catheter (IDC). Patients should not have an IDC inserted in the first 48 hours unless indicated to relieve retention. 2. Bladder and bowel incontinence should be identified and managed in the acute phase of stroke by high levels of nursing care. (see associated documents) 3. Intermittent catheterisation where indicated. Associated documents: 1. Intermittent catheterisation protocol 2. Urinary Assessment (Dunedin’s by permission) 3. Interventions based on U.I. types and to promote urinary continence Definitions Retention = >500mls on bladder scanner 4.9.2 Urinary Incontinence Assessment Source: Dunedin Acute Stroke Unit Urinary Incontinence Assessment Three commonest causes of post-acute stroke urinary incontinence (UI) are • Detrusor instability • Functional: Impaired communication secondary to cognitive or language deficits • Overflow incontinence Step 1: History. Take an adequate history from patient and or family, and staff. Include pre-stroke status, and a history of bowel function. As an aid to guiding the questions, below are listed the common symptoms of urinary incontinence. Keep in mind that there may be more than one cause of urinary incontinence. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 43 of 67 Master Copy is Electronic Stroke Guidelines Stress UI Involuntary leakage on effort, sneezing or coughing. a. Leakage with cough, sneeze, physical activity. b. UI in small amounts (drops, spurts). c. No nocturia or UI at night. d. UI without sensation of urine loss. Urge UI Involuntary leakage accompanied by or preceded by urgency a. Strong, uncontrolled urge prior to UI. b. Mod/large volume of urine loss (gush). c. Frequency of urination. d. Nocturia > 2 times. e. Enuresis Overflow UI Functional UI Inability to maintain continence because of impairments a. Mobility or manual dexterity impairments b. Lack of toilet or toilet substitute c. Restraints d. Sedative, hypnotic, CNS depressant, diuretic, anticholinergic, alpha-adrenergic antagonist. e. Depression, delirium, dementia. f. Language impairment. g. Pain. a. Difficulty starting urine stream. b. Weak or intermittent stream (dribbles). c. Post-void dribbling. d. Prolonged voiding. e. Feeling of fullness after voiding. f. Voiding small amounts often or dribbling with changes in position. Step 2: Simple tests • Record results of a dip stick test of the urine • Send urine for C&S • PR examination • Measure post void bladder volume Step 3: Management Stress UI Urge UI • • Overflow UI • • • • • • • Q2h toileting Pelvic floor exercise Q2h toileting If not progressing consider medication; Oxybutynin 2.5 mg bd Functional UI Acute retention – IDC Large residual – consider Terazosin Intermittent catheterisation if appropriate Address constipation Regularise bowel function Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 • • • • • Address any correctable impairments Communication aids Easy access clothing Frequency/volume chart Prompted voiding Page 44 of 67 Master Copy is Electronic Stroke Guidelines Normal Bladder Function Bladder (detrusor) and urethral functions are coordinated for the storage and emptying of urine (Borrie 1998). This involves areas of the central nervous system and multiple peripheral nervous systems as listed below: 1. Sympathetic nervous system relaxes the detrusor muscle while internal urethral sphincter control is maintained by sympathetic alpha-adrenoreceptors 2. Parasympathetic acetylcholine receptors mediate detrusor contracture. 3. Somatic (voluntary) nervous system innervates the pelvic floor muscles, including the external urethral sphincter. 4. The micturition centre in the brainstem (pons) monitors when the bladder is filling and controls the sacral reflex when bladder filling reaches a certain level. 5. The micturition centre in the frontal lobes provides conscious input to the pontine micturition centre allowing the inhibition of urination until the time of voluntary control. Normally, we are unaware of bladder fullness until a capacity of about 300 cc is reached. The need to void is then inhibited or controlled by the frontal lobes. Urinary Dysfunction 40-60% of people admitted to hospital after a stroke can have problems with urinary incontinence, with 25% of stroke survivors still having problems on hospital discharge, and 15% remaining incontinent after one year (Barrett 2001). Not all the studies excluded people with pre-morbid incontinence, however. 1. The most frequently occurring voiding abnormalities associated with a stroke have been identified as • urinary frequency, • urge incontinence and • urinary retention (Marinkovic and Badlani 2001). 2. Urinary tract infection is not uncommon in stroke patients. Urinary Incontinence is a strong predictor of poor functional recovery, discharge to long-term care, and limited resumption of social participation (Dumoulin et al. 2007). While there are problems with attributing better stroke outcome to improvements in continence, it is possible that recovery from incontinence may improve morale and self esteem and therefore speed overall stroke recovery (Barer 1989; Patel 2001). Conversely, stroke outcome is better in those stroke survivors who remain continent or regain continence (Barer 1989). Improvement is common over time (Marinkovic 2001), which suggests that problems with continence may be transient in some stroke survivors, and/or amenable to intervention. Mechanisms most commonly responsible for urinary incontinence Gelber et al. (1993) suggested that three mechanisms were responsible for incontinence post stroke (van Kuijk et al. 2001). These included: Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 45 of 67 Master Copy is Electronic Stroke Guidelines • • • Detrusor hyper-reflexia with urge incontinence and bladder hyper-reflexia from disrupted neuromicturition pathways (frontal lobe or pontine micturition centers) (Nazarko 2003, Fader & Craggs 2003). Incomplete bladder emptying with overflow incontinence and bladder hypo-reflexia from concurrent neuropathy or from the concurrent medications, such as diuretics (Fader & Craggs 2003). Incontinence from stroke-related motor, cognitive and language deficits, despite normal bladder function Detrusor Hyperreflexia Cortical and subcortical strokes generally result in an unstable or hyper-reactive detrusor (Borrie 1998). Borrie (1998) has noted that unstable detrusor contractions occur with little warning and result in symptoms of urinary urge incontinence. The bladder volume at which this occurs can be variable but it is usually lower than the volume at which a person with a normally functioning bladder would normally have a strong urge to void (Borrie 1998). He comments that detrusor hyper-reflexia is not inevitable following a stroke. It has been noted that urinary incontinence is more common with larger strokes with a greater number of accompanying deficits and is closely associated with bowel incontinence, dysphagia and overall functional level, all markers of more severe strokes. Urinary Retention 1. Urinary retention is common following an acute stroke (21-47%). 2. Potential contributing factors include difficulty with communication, mobility and decreased consciousness. 3. Other contributing factors may be a hyper-reflexic bladder, as seen in diabetic neuropathy, or an obstruction such as prostatic hypertrophy. 4. Occasionally urinary retention will persist in very severe stroke patients, often in patients with embolic strokes with no previous warnings. Other Factors Contributing to Post-Stroke Incontinence Stroke results in a number of factors which can affect continence, but which are often overlooked: 1. Communication difficulties, particularly an inability to communicate voiding needs, either due to aphasia, dysarthria or confusion/cognitive impairments. 2. Mobility problems, such as hemiplegia make some patients dependent on caregivers to void in a socially appropriate manner. Lack of caregiver support may also make it difficult to toilet the stroke patients quickly enough. 3. Post stroke depression and confusion may result in a failure to communicate the need for assistance. 4. Medications, such as diuretics can increase the frequency of the need to void; others can increase confusion, while still others such as anti hypertensives may affect the autonomic nervous system leading to retention. Risk Factors for Urinary Incontinence (Nazarko 2003, Brittain et al. 1999, Jorgensen et al. 2005). 1. Severe strokes have a higher incidence of urinary incontinence. 2. Premorbid history of urinary incontinence, i.e comorbidities. 3. Motor weakness and mobility difficulties, including ataxia. Stroke Guidelines Page 46 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines 4. 5. 6. 7. Altered level of consciousness. Cognitive impairment Depression Elderly (Marinkovic and Badlani 2001). Gariballa (2003) found that patients with urinary incontinence at admission tended to be more undernourished and dehydrated, more impaired, at greater risk for infective complications and older then patients without urinary incontinence. Course of Urinary Incontinence Brooks (2004) has noted that a stroke may exacerbate existing stress incontinence, a problem more common in women. Urinary incontinence was reported among 17% (n=213) of non-institutionalised post stroke survivors, an average of nine years post stroke, compared to 7% of control subjects without stroke (Jorgensen et al. 2005) (OR = 2.8, 95% CI 1.5-5.2). Incontinence post stroke often resolves without treatment in eight weeks (Borrie et al. 1986, Brocklehurst et al. 1985). Urinary Tract Infection 1. UTI is the most common medical complication in stroke rehabilitation. 2. Risk factors include use of beta-blockers and high post-void residuals. Urinary tract infections (UTI) are the most commonly encountered medical complication associated with stroke rehabilitation (Roth et al. 2001). Although age greater than 65, male sex, a history of prior stroke, stroke syndrome, use of β-Blocker or antidepressants and a post void residual (PVR) of 150 ml or more have been reported as risk factors for the development of UTIs, Dromerick and Edwards (2003) only found an increased risk of UTI to be associated with β-Blocker use (OR = 4.01, 95% CI 1.26-14.59) and PVR ≥ 150 ml (OR = 3.97, 95% CI 1.24- 9.53) among 120 stroke patients admitted to a rehabilitation service. Post-Void Residual Urine Testing 1. PVR is able to determine if bladder emptying is complete. 2. PVR > 150 cc is generally regarded as abnormal. 3. Increased PVRs increases the risk of urinary tract infections. Borrie (1998) notes that “A true void residual (PVR) urine test is critical to determine if bladder emptying is complete... although in/out catherisation is the gold standard for determining the PVR urine, portable bladder ultrasound is practical, noninvasive and costeffective (Chan 1993). A sterile culture from the catheter specimen would rule out urinary tract infection. Two consecutive residual urines of greater than 150ml suggest a significant degree of incomplete bladder emptying, and physical outlet obstruction should be ruled out by urology assessment with cystoscopy. There is no consensus as to what residual urine volume is definitively abnormal (Grosshans et al. 1993). Most would regard greater than 150 ml abnormal, but is depends to some degree on the volume of urine voided before catheterisation.” Diagnosis of Bladder Dysfunction 1. Detrusor instability or hyper-reflexia with urge incontinence. 2. Stress incontinence. 3. Overflow incontinence with incomplete emptying. 4. Mixed types of incontinence. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 47 of 67 Master Copy is Electronic Stroke Guidelines 5. Functional incontinence, due to non-urinary factors. 6. Iatrogenic incontinence, due to drugs or restraints. The intervention used to manage urinary incontinence largely depends on the patient’s history and type of incontinence. Due to the absence of strong evidence regarding treatment efficacy, Borrie (1998) has suggested using a stepwise approach, with behavioural interventions used as first line treatments followed by pharmacological and surgical interventions. This approach highlights the fact that patients should always be treated with the least invasive intervention option. There are few randomised controlled trials evaluating the efficacy of bladder management to treat urinary incontinence post stroke, although the issue has been studied in other patient populations. The choice will often be dictated by the stroke patient’s type of incontinence. Behavioural Interventions for Incontinence 1. Scheduled voiding q 2-4 hours 2. Fluid restriction Dumoulin et al. (2005) conducted a systematic review investigating the benefits of behavioural therapies used to treat urinary incontinence. The study included only four randomised controlled trials, a single cohort study and recommendations from three clinical practice guidelines. This study found limited evidence for the reduction of urinary incontinence in male stroke patients using combination treatment including bladder retraining with urge suppression and pelvic floor exercises. The authors concluded that although there is increasing recognition of the benefits of using behavioral approaches as treatment for stroke patients with a high occurrence of continual urinary incontinence, the evidence remains very limited for specific treatments used for stroke survivors with urinary incontinence. Bladder Training Scheduled voiding programs follow a set schedule of voiding every 2-4 hours regardless of whether the patient “needs to go” because post stroke cortical awareness of bladder fullness is often reduced (Borrie 1998). Initiation of toileting in response to urgency, while shown to promote continence, often does not provide enough time to void especially when mobility is limited. Bladder training allows for lengthening of the voiding interval as the patient becomes consistently dry (Burgio and Paurgio 1986, Borrie 1998). However, Duncan et al. (2005) suggest that there is no evidence for or against a scheduled voiding program. These authors recommend an individualised bladder training program and the use of prompted voiding for incontinent stroke patients. Pelvic Floor Exercises are designed to strengthen the pelvic floor muscles through repeated contraction and relaxation of specific muscle groups. Although these exercises were originally developed to manage stress incontinence, rapid contractions have also been found to help patients suppress the “urgency wave” of the relax bladder contraction (Borrie 1998). Fluid Intake The total measurable fluid intake should be approximately 1500 – 1800 ml per 24 hours. The use of intravenous fluids or a feeding tube may result in fluid loads greater than 2000 ml per day, which will in turn compromise bladder continence (Borrie 1998). Pharmacological Interventions for Incontinence Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 48 of 67 Master Copy is Electronic Stroke Guidelines 1. Pharmacological treatment will depend on the cause of the stroke. 2. The vast majority of bladder incontinence is due to detrusor hyper-reflexia due to central loss of inhibition. 3. Drugs with anticholinergic actions are recommended in these cases, i.e Oxybutynin. 4. For overflow incontinence due to detrusor inactivity, a cholinergic such as Bethanecol is recommended. 5. For overflow incontinence due to outlet obstruction, an alpha-adrenergic blocker may be recommended. Drug therapy should be considered an adjunct to behavioural therapy and should only be used when behavioural interventions are either inappropriate or have had an adequate trial. The side effects of anticholinergic medications are often underestimated, particularly in the post-stroke population. Therefore, the goal of pharmacological therapy should be to use the lowest dose to achieve the optimal effect with the fewest side effects (Borrie 1998). Post stroke detrusor hyper-reflexia treated with drugs with various degrees of anticholinergic medications. These medications include, oxybutynin, propantheline and imipramine. These drugs should be started at a low dose and increased gradually over days, if not weeks. Propantheline supposedly does not cross the blood-brain barrier, with a theoretical advantage over other drugs which can lead to confusion. Tolterodine is another anticholinergic which is said to have less influence on salivary gland function and therefore less likely to lead to dry mouth as a complication. (Note that Tolterodine is not a subsidised drug in NZ). Borrie (1998) has also noted that for patients with poor detrusor contracture, Bethanechol may improve detrusor contracity (Sonda et al. 1979). It serves as an adjunct to intermittent catherisation. Bethanechol is discontinued if residual urines do not diminish, there is excessive sweating, asthmatic attacks, congestive heart failure and abdominal cramps. Catheters for Bladder Dysfunction 1. Catheters for bladder dysfunction should always be seen as a treatment of last resort. 2. Intermittent catheterisation is the preferred option in urinary incontinence with overflow incontinence. 3. An indwelling catheter should be limited to those patients with intractable urinary retention, continuous wetness (+/- skin breakdown) and those who have need of monitoring. Intermittent catheterisation is the preferred management option for patients suffering from urinary retention with overflow incontinence. The combined voided and residual volume should not exceed 500 ml. and the frequency of catheterisation should be monitored and adjusted if the residual volume changes. Long-term in-dwelling catheters are associated with several risks, such as chronic urinary bacteruria and bladder stones, and should only be used if intermittent catheterisation is impractical. Gresham et al. (1995) noted that “use of indwelling catheters should be limited to patients with incontinence due to urinary retention that cannot be otherwise treated, severely impaired patients with skin breakdown, in whom frequent bed or clothing changes would be difficult or painful and in patients in whom incontinence interferes with monitoring of fluid and electrolyte balance.” Brocklehurst et al. (1985) noted that 40% of patients regain continence during the first two weeks. The use of a catheter will inhibit that process. Again catheterisation should be reserved for exceptional circumstances (Nazarko 2003). Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 49 of 67 Master Copy is Electronic Stroke Guidelines Bjork et al. (1984), Sabanthan et al. (1985) and Wareen et al. (1982) observed the chronic use of indwelling catheters increases the risk of bacteria and urinary tract infection. Moreover, it has been shown that more than three-quarters of persons catheterised for three months or more will develop inflammatory bladder wall changes. While bacteraemia can be identified by urine culture, treatment with antibiotics should be reserved for those patients with symptomatic urinary tract infections. 4.10 Formal Family Meeting Guidelines 4.10.1 Purpose To ensure that Family Meetings within General Medicine and Stroke are organised, facilitated, supported and documented in a manner that enhances quality care and service provision. 4.10.2 Introduction Individual members of the MDT often meet informally with patients and families during a patients stay in hospital, however these guidelines refer to Family Meetings which are formally arranged and include the patient, their family or support people, and all relevant members of the MDT. Family meetings provide an opportunity to enhance the quality of care provided to patients at Christchurch Hospital. They are an ideal avenue to inform, deliberate, clarify and set goals for future care, based on discussions between health professionals and the patient and family. Adequate preparation, skilled facilitation and accurate documentation can improve the effectiveness of family meetings, while maintaining the patient’s sense of autonomy. Different family meetings have different roles/agendas, which may include; Diagnostic and treatment issues Patient and/or family compliance issues Patient/family conflict relating to hospital admission Discharge planning – especially complex issues around discharge needs 4.10.3 Procedure Planning The decision that a family meeting is required can be made by the interdisciplinary team, an individual staff member, or the patient/family. A good time for this to be communicated with the team is at the morning board meeting. Once the decision has been made for a family meeting, the facilitator for the meeting needs to be established. The facilitator meets with the patient to ensure they understand the purpose of the family meeting, to get their consent for the meeting, and to clarify who should be invited to attend. The patient is given the choice of whether they wish to attend or not, provided their physical health or cognitive status is adequate. Where the patient is unable to be involved in this process, the next of kin (or nominated contact), Enduring Power of Attorney or closest family member will be consulted. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 50 of 67 Master Copy is Electronic Stroke Guidelines The facilitator (or his/her nominee) must then arrange a date, time and venue for the family meeting, and ensure that all members of the family meeting are aware of the details for the meeting. The details of the meeting must also be clearly recorded in the patient’s clinical file. Format All members of the MDT who are attending the meeting should meet briefly before the meeting to clarify the key issues to be discussed and to decide on the expected outcome of the meeting. It is the responsibility of the Facilitator to: • Facilitate introductions of all present. • Establish a timeframe for the meeting. • Make it clear that questions can be raised at any time. • Ensure that support is available for the patient where/when needed (eg. Mental Health Worker, Maori Health Worker). • Ensure the meeting is a safe, empowering and culturally appropriate forum. • Check in with the patient and family at regular intervals throughout the meeting to ensure they have a clear understanding of what is being discussed. • Define the purpose of the meeting • Ensure that after the introductions etc, the Medical Officer in charge of the patient’s case summarises medical treatment, diagnosis, results of tests and ongoing management of the patient’s case. • Ensure each discipline outlines their assessment of the patient’s situation with ongoing explanations and general discussion. If a relevant team member is not available, a written handover may be read by the facilitator. • Ensure the opportunity for the patient and family members to ask questions and/or discuss any concerns. • At the end of the meeting, sum up the key points of discussion and ensure all present clearly understand the • outcome/plan/information given. If relevant, tasks yet to be completed by the patient, family and MDT should be clearly summarised and specified timeframes set. When the outcome of the meeting is for residential care for the patient (rest home, dementia care or hospital level care), the social worker may stay behind with the family after the other MDT members have left the meeting to provide the patient and family with the information they need and to complete necessary paperwork. If the meeting has been especially complex or upsetting for the family, an appropriate health professional may stay after the meeting has finished to provide support. Documentation The facilitator of the meeting is responsible for documenting the meeting in the clinical file. This should be done as soon as possible following the meeting. When the facilitator is not the Medical Officer, the Medical Officer must summarise the medical outcome of the meeting in the clinical file, in addition to the summary that the facilitator has documented. The documentation must: • State the name and designation of all those present at the meeting • Include the date and time of the meeting. • Be written in a manner that is clear, neat and legible. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 51 of 67 Master Copy is Electronic Stroke Guidelines • • Summarise the information shared, issues raised, concerns of the patient/family and recommendations made by the MDT. Clearly summarise the outcome of the meeting, including (where appropriate), medical treatment plan, discharge destination, referrals to be made, supports to be put in place on discharge etc. Things which may make family meetings go more smoothly: • Know your role and be clear in what you want to communicate. • Keep the language non-medical and free of jargon. • Do not use ambiguous words which may confuse or mislead the patient and family. • Be supportive of the patient and family and aware of their feelings. • Ensure that the cultural needs of the patient and family are met and include interpreters and cultural supports where required/requested. • Be optimistic but realistic. • Be supportive of your colleagues and work as a team, respecting other disciplines skills. • Be flexible in the way the meeting runs, as some information comes up unexpectedly. • Respect the patient, talk to them, with the family listening (as opposed to the reverse). 4.11 Palliative Care Palliative Care An accurate assessment of prognostic risk factors or imminent death should be made for patients with severe stroke or those who are deteriorating. Patients with stroke who are dying, their families and caregivers should have access to specialist palliative care teams as needed, and have care that is consistent with the principles and philosophies of palliative care. (Palliative care subcommittee, 2007) Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 52 of 67 Master Copy is Electronic Stroke Guidelines 5 Transient Ischaemic Attack (TIA) Guidelines 5.1 Acute Management in the ED /Medical Ward 5.1.1 Transient Ischaemic Attack (TIA) Acute Management in the ED/Medical Ward NB Please refer to accompanying guidelines for more detailed information regarding each step. Step 1: Diagnosis Is it a TIA? No Alternative Diagnosis! Yes Step 2: ABCD2 risk assessment 3 or less (low early stroke risk) 4 -7 (high early stroke risk) Step 3: Investigations and Risk Factors Essential Investigations + (tick) Yes No N/A Urgent impatient investigations if ABCD2 score 4 -7 • • CT Head US Carotids if indicated Step 4: Secondary Prevention Antiplatelet agent: Clopidogrel plus aspirin for first 3 weeks after TIA then Clopidogrel or Aspirin monotherapy Yes No N/A Steps 5 & 6: Lifestyle & Yes No General Advice Smoking cessation Alcohol consumption Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 N/A Warfarin or Dabigatran if atrial fibrillation Antihypertensive agent Cholesterol lowering Rx Page 53 of 67 Master Copy is Electronic Stroke Guidelines Dietary advice Exercise Information phamplet Driving advice Step 7: Discharge Arrangements Step 1 to 6 complete ALL investigations completed as impatient if ABCD2 score 4-7 Incomplete investigations requested as outpatient if ABCD2 score 3 or less Follow up with GP arranged O/P Clinic Yes No 5.1.2 Transient Ischaemic Attack (TIA) Acute Management In the ED / AMAU / ASU Guidelines STEP 1 Diagnosis – are you confident it was a TIA? Diagnosis of TIA can be problematic. Diagnosis in primary care and ED is likely to only be 50-60% accurate. Diagnosis of TIA is more likely to be correct if • Abrupt onset of symptoms – with neurological deficit maximal at onset • Focal loss of brain or monocular function – that is typical for TIA, ie. consistent with vascular cause and territory. (see below) • Rapid recovery occurs – most TIAs resolve within minutes and 60-70% within 1 hour. If symptoms /signs persist then assume likely acute stroke TIA Symptoms (ref 1) Typical of TIA Consistent with TIA (only if typical symptoms are also present but not diagnostic if in isolation) Dysarthria (23%) Confusion (exclude dysphasia) Unilateral altered sensation (35%) Ataxia (12%) Impaired or lost consciousness Dysphasia (18%) – name pen, watch Vertigo (5%) Non specific dizziness Monocular Blindness (18%) Diplopia (5%) Light headed, faint or syncope Unilateral weakness face/arm/leg (50%) Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Not Typical of TIA (if occur in isolation – without typical symptoms) Page 54 of 67 Master Copy is Electronic Stroke Guidelines Hemianopia (5%) – assess visual fields Dysphagia (1%) Bilateral sensory symptoms Dyspraxia – copy diagram, draw, clock Drop attacks Bilateral blurred vision Incontinence (%) = frequency reported in Oxfordshire Community Stroke Project (ref 2) Differential diagnosis (in order of frequency as seen in primary care) includes • Migraine aura (+ headache) • Syncope • “Funny turns” • Labyrinthine disorders (isolated vertigo + secondary nausea & ataxia) • Partial (focal) epileptic seizures • Drop attacks • Hyperventilation. STEP 2: Assess Risk = risk of stroke within the next 7 days – use ABCD2 score (ref 3) ABCD2 items Value Age: > 60yrs 1 < 60yrs 0 BP: > 140/90 1 < 140/90 0 Patient Score /1 /1 Clinical Features Unilat. weakness 2 Or Speech affected 1 Or Other neuro symptoms 0 /2 Duration of TIA > 60 mins 2 10 - 59 mins 1 < 10 mins 0 /2 Diabetes Present 1 Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 /1 Page 55 of 67 Master Copy is Electronic Stroke Guidelines Absent 0 ABCD2 Total Score: /7 Stroke Risk Assessment ABCD2 Score 0-3 4-5 6-7 2 Day Risk 1% 4.1% 8.1% 7 Day Risk 1.2% 5.9% 11.7% 90 Day Risk 3.1% 8.1% 17.8% Low Risk Scores: 0-3, or greater than 7 days from symptom onset May be discharged from the ED /Medical ward with management plan and outpatient investigations organised. Requires: • OP investigations • Immediate institution of secondary prevention measures • Lifestyle & general advice • GP follow-up • High Risk Scores: 4-7, within 7 days of symptom onset Require: • Immediate investigations (CT, carotid US etc) and initiation of secondary prevention management before discharge Patients require inpatient management unless appropriate investigations can be arranged within the following timeframes: • CT Head same day prior to discharge • Carotid Ultrasound within 48 hours (weekdays) or 72 hours (weekends) • Urgent Outpatient options include referral to Neurology TIA clinic or GP investigations according to Health Pathways and Begin Early Aggressive Therapy (BEAT) All patients should have all appropriate medical treatments initiated at the point of first medical contact and prior to discharge to GP care. Guidelines for selection of patients for carotid ultrasound as below STEP 3: Investigations and Vascular Risk Factors For all patients (ref 4) Investigations Done Norm AbN Vascular Risk Factors Yes No UnK ECG Hypertension FBC Diabetes ESR Cholesterol U&Es Smoking- Past Stroke Guidelines Page 56 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines Creatinine Glucose Smoking- Current Atrial Fibrillation (any) Alcohol excess (> 4-6) Other investigations that may be required CT Scan • Brain imaging with CT or MRI is recommended for all people with TIA • Same day imaging for high risk patients (as defined above) • If low risk should be done within 7 days • If TIA is fully recovered it is reasonable to give aspirin while awaiting scan. Carotid Ultrasound Scan Patients should meet the following criteria (presence or absence of bruits should not alter decision) • Anterior (carotid) territory TIA (ie. NOT VBI or posterior circulation event) • Fit for surgery and with life expectancy >2-3 years • Priority for scan and surgery is urgent (surgery within 1-2 weeks) because of risk of early stroke – high risk TIAs should have this as an inpatient eg. those with ABCD2 scores 4-7 (usually those with any weakness or speech disturbance) Symptomatic carotid artery stenosis greater than 50% requires urgent referral to vascular surgery or neurosurgery departments for consideration of carotid endarterectomy (as inpatient for ABCD2 scores 4-7) STEP 4: Secondary Prevention Antiplatelet agents: • Clopidogrel plus aspirin appears to reduce early stroke recurrence when initiated within the first 24 hours of symptom onset and continued for 3 weeks. Combination therapy of aspirin and clopidogrel is not indicated for long-term vascular secondary prevention due to increased bleeding risk. Clopidogrel monotherapy is as effective as combined Aspirin and Dipyridamole and is better tolerated (ref 5) - 300mg stat, then 75 mg daily. It has a modest additional benefit compared with Aspirin alone. • • • • • Dipyridamole 150mg bd and Aspirin 75-100 mg daily is an alternative treatment option, equally as effective as Clopidogrel. Start Dipyridamole at low dose (e.g.150 mg nocte for 1 week) and titrate upwards to 150 mg twice daily to reduce the adverse effect of headache. Advice that the headache may resolve after some days may aid compliance. Aspirin – montherapy may be a reasonable treatment for some patients. 300mg stat and 75 – 150mg daily for first event, preferably after CT scan If CT scan delay > 12-24 hrs it is reasonable to start aspirin while waiting Consider 300mg daily for recurrent events in case of aspirin resistance Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 57 of 67 Master Copy is Electronic Stroke Guidelines Warfarin Only if in AF or other cardiac source of emboli identified (ref 4) • • • • • • Not recommended if in sinus rhythm even if recurrent TIAs on aspirin Every person with TIA and AF (paroxysmal or sustained) unless contraindicated. The benefit of anticoagulation for secondary prevention of cardioembolic TIA far outweighs the risk of haemorrhage for most people. CT head scan must be done first to exclude haemorrhage or other pathology Target INR of 2.5 (range 2-3) is recommended. Higher ratios indicated for mechanical heart valves or antiphospholipid syndrome. It is reasonable to initiate warfarin 48 hours after a cardioembolic TIA or minor stroke Potential risk and benefits must be discussed with patient and this documented Dabigatran is available as an alternative to warfarin for patients with atrial fibrillation (ref 6). The usual dose is 150 mg BD PO. This drug should be used with caution in the elderly. If it is given, a lower dose of 110 mg BD PO is recommended for patients over 80 years of age. Dabigatran should not be used for patients with severe renal impairment (CrCl< 30 mL/min). Before using Dabigatran, refer to Section 14.9.1 (Haematology) in The Blue Book Antihypertensive agents Blood pressure-lowering treatment is recommended for all people after stroke or TIA unless the person has symptomatic hypotension (ref 4). Do not lower BP rapidly. The best evidence for reduction in stroke incidence is using a combination of and ACE inhibitor and a diuretic. (See section 3.2.2) Cholesterol lowering therapy A statin is recommended for most people after TIA Atorvastatin 80 mg and simvastatin 40 mg daily reduce the risk of recurrent stroke or vascular disease. Atorvastatin 80 mg is recommended for patients with LDL cholesterol > 2.6 mmol/l. (ref 7)Lower doses may be required, depending on patient tolerability, frailty, LDL < 2.6 mmol/L • • • • Benefit occurs even in those with normal or low baseline cholesterol Optimal levels include total cholesterol < 4 and LDL <2.5 At least 2-year life expectancy is required for patients to gain significant stroke prevention benefit from statin treatment. Patients with low HDL, high triglycerides and clinical features of the metabolic syndrome may be better treated with other therapies for correction of the lipid disorder and require further assessment. STEP 5: lifestyle advice • • • Smoking cessation if current smoker Reducing alcohol consumption if excessive (>4-6 units/day). Moderate exercise is recommended Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 58 of 67 Master Copy is Electronic Stroke Guidelines If BMI > 25-30 then lifestyle change & diet advice is required STEP 6: Other general advice • Information – TIA leaflet or stroke foundation (0800 STROKE, www.stroke.org.nz) • Driving Advice Document driving status and that advice is given. - Private licence; single TIA = no driving for 1 month, multiple TIA = 3 months - Vocational Licence; single TIA = no driving 6 months, multiple = permanent STEP 7: Discharge arrangements Low risk patients (ABCD2 score < 3) can be discharged either after Physician review or with follow up arranged with Physician or GP within 1-2 weeks if: • • • All essential investigations arranged completed or only awaiting OP CT scan and A management plan has been initiated (must address all points) and Follow up arranged High risk patients (ABCD2 score 4-7 or multiple TIAs within last week) should remain as inpatient until; • All investigations completed • A management plan has been initiated (must address all points) and • Follow up arranged • Note: patients may be discharged prior to Carotid US only if a guaranteed urgent US appointment is arranged within 48h (72h weekends) and a plan to immediately follow-up the US result is in place. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 59 of 67 Master Copy is Electronic Stroke Guidelines 6 Secondary Prevention Guideline 6.1 Secondary Prevention after Stroke Patients who have had a stroke remain at an increased risk of a further stroke (about 10-12% per annum), and of other vascular events (about 7% per annum). The risk of a further stroke is highest early after stroke. Therefore there should be a high priority given to secondary prevention. Lifestyle All people with stroke or transient ischaemic attack should be given appropriate advice on lifestyle factors such as not smoking, regular exercise, diet, achieving a satisfactory weight, reducing the use of added salt. Cigarette smoking Cigarette smoking should be discontinued. Alcohol consumption Excessive alcohol consumption should be discontinued. Mild to moderate use of alcohol (1 – 2 standard drinks per day) is associated with reduction in stroke rates. Physical Activity Moderate exercise (30 – 60minutes of brisk walking, jogging, cycling, or other aerobic activity at least 3 times per week) is generally recommended. A patient’s comorbidities and functional state need to be taken into consideration when developing an exercise program. Body Weight People who have a body mass index (BMI) > 25 (especially those with BMI > 30) should commence graduated lifestyle change aimed at weight reduction. Reduction in blood pressure • A blood pressure lowering treatment is recommended for all people after stroke or transient ischaemic attack unless the person has symptomatic hypotension. • The optimal time to start blood pressure – lowering treatment is not known, but it is usually advisable to wait 7-14 days after an acute stroke.[see separate blood pressure protocol Section 3.2]. The benefit of anti-hypertensive treatment is seen irrespective of the patient’s baseline blood pressure, including patients considered to be normotensive Canterbury DHB CDHB Stroke Treatment of diabetes mellitus Diet, oral hypoglycaemics and insulin should be prescribed as needed to control diabetes. Intensive treatment of both type 1 and type 2 diabetes mellitus can reduce microvascular complications such as retinopathy, nephropathy and neuropathy, but it has not been conclusively shown to reduce the risk of macrovascular complications including stroke. Lipid – modifying treatment Treatment with a 3-hydroxy-3-methyl-coenzyme A (HMG-CoA) reductase inhibitor (statin) is recommended for most people following ischaemic stroke or transient ischaemic attack. Stroke Guidelines Page 60 of 67 Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Master Copy is Electronic Stroke Guidelines Total cholesterol levels fall within the first 7 – 10 days after stroke so lipids should be checked at time of stroke or 6 – 8 weeks after the stroke. 6.2 Antiplatelet Therapy This is described in Section 6 Secondary prevention after TIA. Clopidogrel monotherapy is considered the firstline antiplatelet therapy for stroke secondary prevention. Combination of Dipyridamole and Aspirin is an alternative firstline option, but there are compliance problems related to number of tablets and headache. Aspirin monatherapy may be appropriate for some patients. 6.3 Anticoagulation Anticoagulation with warfarin or dabigatran should be started in every person with cardioembolic ischaemic stroke or transient ischaemic attack due to atrial fibrillation (paroxysmal or permanent), unless contraindicated. Anticoagulation with warfarin is required for people with prosthetic heart valves and should be considered for mitral valve disease or myocardial infarction within the preceding 3 months. This is further discussed in Section 6.1, Secondary prevention after TIA - For patients with contraindications to anticoagulation, aspirin is recommended although it is much less effective than warfarin in secondary prevention for patients with atrial fibrillation. - Anticoagulation should not be started until intracranial haemorrhage has been excluded by brain imaging. The optimal timing of anticoagulation after stroke is not certain. Anticoagulation is usually started after 14 days. It may be started earlier in people with minor strokes IF intracerebral haemorrhage has been excluded AND if there is a high risk of early recurrent stroke, such as a recent full-thickness anterior myocardial infarct or prosthetic heart valve. In general, it is preferable to commence anticoagulation prior to discharge from hospital. 6.4 Carotid Endarterectomy Carotid endarterectomy is recommended for patients with symptomatic severe (50-99%) stenosis of the proximal internal carotid artery All patients who may benefit from carotid endarterectomy should be discussed with the vascular surgical team on an urgent basis. Carotid ultrasound findings may need to be verified by CT angiography. Comments:• The term ‘symptomatic’ applies to patients who have had a previous transient ischaemic attack or non-disabling stroke in the territory of that artery. Carotid endarterectomy is not recommended in these patients if the ischaemic event was likely to have been due to cardiogenic embolism, if the stroke resulted in serious permanent disabilities, or if important medical comorbidities exist. If in doubt, discuss with vascular surgical team urgently • Carotid Endarterectomy should be performed only by specialist surgeons who can demonstrate a complication rate (stroke or death within 30 days) of ≤7% • Maximum benefit of carotid endarterectomy is achieved when the procedure is performed within 2 weeks of the symptomatic event. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 61 of 67 Master Copy is Electronic Stroke Guidelines • Risk factors that increase the likelihood of benefit from surgery include male sex, increasing age up to 79 years, hemispheric rather than retinal symptoms, plaque surface irregularity and coexistent intracranial atherosclerotic disease. • Carotid endarterectomy is not recommended for patients with symptomatic proximal internal carotid artery stenosis • less than 50% severity or • severe stenosis demonstrating “trickle flow” on duplex scanning • Routine carotid endarterectomy is not recommended for unselected patients with asymptomatic Carotid stenosis • Angioplasty and stenting of the internal carotid artery has been shown to have worse results (death or stroke) than carotid endarterectomy Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 62 of 67 Master Copy is Electronic Stroke Guidelines References Ada L, & Foongchomcheay A. 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CDHB Reference: Authorised by: Issued: Review Date: CDHB Stroke Guidelines Fifth issue Dr Bopitiya September 2015 March 2016 Please note: This document is to be viewed via the WCDHB or CDHB Intranet only. All users must refer to the latest version from the WCDHB or CDHB Intranet at all times. Any printed versions, including photocopies, may not reflect the latest version. Stroke Guidelines Document Owner: Stroke Physician General Medicine WCDHB, Version 1, Issued 1/9/2015 Page 67 of 67 Master Copy is Electronic