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HEART FAILURE by Nancy Jenkins The most common reason for hospitalization in adults >65 years old. Heart Failure- Clinical syndrome that can result from any structural or functional cardiac disorder that impairs ability of ventricle to fill with or eject blood Heart Failure Click here! 5 million Americans have heart failure •500,000 new cases every year • 25-50 billion dollars a year to care for people with Heart Failure •6,500,000 hospital days / year •300,000 deaths/year Heart Failure Mild Mild Cardiogenic shock Cardiomyopathy Uncompensated Heart Failure Pulmonary Edema-ADHF Severe End Stage Irreversible Control With Drugs Diet Fluid Restriction /Same as Mild with Morphine Sulfate Needs new ventricle VAD IABP Heart Transplant Heart Failure Pneumonic U Upright Position N Nitrates L Lasix O Oxygen A Amiodorone, ACE, ARBs D Dig, Dobutamine M Morphine Sulfate E Extremities Up or Down Definition • CO=SVxHR is insufficient to meet the metabolic needs of the body • SV is determined by preload, afterload and myocardial contractility • Systolic failure- dec. contractility • Diastolic failure- dec. filling • EF< 40% Heart Failure Etiology and Pathophysiology • Systolic failure is the most common cause – **Hallmark finding: Decrease in the left ventricular ejection fraction (EF) • Caused by – Impaired contractile function (e.g., MI) – Increased afterload (e.g., hypertension) – Cardiomyopathy – Mechanical abnormalities (e.g., valve disease) http://coursewareobjects.elsevier.com/objects/mccance5e_v1/McCance/Module15/Part02/M15L04S41a.html??hostType=undefined& authorName=Mccance&prodType=undefined hypokinesis 90/140= 64% EF- 55-65 normal Heart Failure Etiology and Pathophysiology • Diastolic failure – Impaired ability of the ventricles to relax and fill during diastole resulting in decreased stroke volume and CO – Diagnosis based on the presence of pulmonary congestion, pulmonary hypertension, ventricular hypertrophy, normal ejection fraction (EF) diastolic failure Heart Failure Etiology and Pathophysiology • Mixed systolic and diastolic failure – Seen in disease states such as dilated cardiomyopathy (DCM) – Poor EFs (<35%) – High pulmonary pressures • Biventricular failure (both ventricles may be dilated and have poor filling and emptying capacity) Your patient has a normal EF but shows signs of heart failure. Your patient most likely has: 1. Decreased cardiac output 2. Systolic failure 3. Diastolic failure 4. LV hyypertrophy Preload • Volume of blood in ventricles at end diastole. • Depends on venous return • Depends on compliance Afterload • Force needed to eject the blood into the circulation • Arterial B/P, pulmonary artery pressure • Valvular disease increases afterload CHF • Pathophysiology • A. Cardiac compensatory mechanisms – 1.tachycardia – 2.ventricular dilation-Starling’s law – 3.myocardial hypertrophy • Hypoxia leads to dec. contractility http://www.heartsite.CHF/ html/chf_3.html cont. • B.Homeostatic compensatory mechanisms(medications block these) • Sympathetic Nervous System-(beta blockers block this) – 1.vascular system- norepinephrine- vasoconstriction(What effect on afterload?) (ACE) (ARB) – 2.kidneys• • • • A. dec. CO and B/P cause renin angiotensin release.(ACE) B. Aldosterone release causes Na and H2O retention(aldactone) Inc. Na causes release of ADH(diuretics) Release of atrial natriuretic factor- promotes Na and H20 excretion and prevents severe cardiac decompensation (Natrecor) – 3.liver- stores venous volume(ascites, +HJR), – Hepatamegaly- can store 10 L. check enzymes Heart Failure Etiology and Pathophysiology • Compensatory mechanisms are activated to maintain adequate CO – Neurohormonal responses: Endothelin is stimulated by ADH, catecholamines, and angiotensin II and causes • Arterial vasoconstriction • Increase in cardiac contractility • Hypertrophy Heart Failure Etiology and Pathophysiology Contiinued: Neurohormonal responses: Proinflammatory cytokines (e.g., tumor necrosis factor) • Released by cardiac myocytes in response to cardiac injury • Depress cardiac function by causing cardiac hypertrophy, contractile dysfunction, and myocyte cell death Heart Failure Etiology and Pathophysiology – Neurohormonal responses: Over time, a systemic inflammatory response is mounted resulting in • Cardiac wasting • Muscle myopathy • Fatigue Heart Failure Etiology and Pathophysiology • Counter regulatory processes- these help protect the heart – Natriuretic peptides: atrial natriuretic peptide (ANP) released with cardiac muscle stretch and b-type natriuretic peptide (BNP) released with increased pressure of LV • Released in response to increases in atrial volume and ventricular pressure • Promote venous and arterial vasodilation, reducing preload and afterload • Prolonged HF leads to a depletion of these factors Which of the following are compensatory mechanisms for HF? 1. 2. 3. 4. Tachycardia Hypotension RAAS LV hypertrophy Heart Failure – Natriuretic peptides (ANP and BNP) are endothelin and aldosterone antagonists so they: • Enhance diuresis • Block effects of the RAAS – Natriuretic peptides inhibit the development of cardiac hypertrophy and may have antiinflammatory effects – **Natrecor or Neseritide has same effects Result of Compensatory Mechanisms Heart Failure Pathophysiology Structural Changes • • • • Decreased contractility Increased preload (volume) Increased afterload (resistance) Ventricular remodeling(ACE inhibitors can prevent this) – Ventricular hypertrophy – Ventricular dilation Ventricular remodeling (from football to basketball) END RESULT FLUID OVERLOAD AND EDEMA Heart Failure Classification Systems • New York Heart Association Functional Classification of HF – Classes I to IV • ACC/AHA Stages of HF – Stages A to D AHA Newer Classifications of Heart Failure- Staging Stage A Stage B Stage C Those at high risk for developing heart failure. Includes people with: •Hypertension •Diabetes mellitus •Coronary artery disease (including heart attack) •History of cardiotoxic drug therapy •History of alcohol abuse •History of rheumatic fever •Family history of CMP Those diagnosed with “systolic” heart failure but have never had symptoms of heart failure (usually by finding an ejection fraction of less than 40% on echocardiogram). Patients with known heart failure with current or prior symptoms. Symptoms include: •Shortness of breath •Fatigue •Reduced exercise intolerance. •Exercise regularly •Quit smoking •Treat hypertension •Treat lipid disorders •Discourage alcohol or illicit drug use •If previous heart attack or current diabetes mellitus or hypertension angiotensin converting enzyme inhibitor (ACE-I) •Care measures in Stage A + •All patients should be on ACE-I •Beta-blockers should be added •Surgical consultation for coronary artery revascularization and valve repair/replacement (as appropriate) In this group, care measures from Stage A apply, ACE-I and beta-blockers should be used + •Diuretics (water pills) •Digoxin •Dietary sodium (salt) restriction •Weight monitoring •Fluid restriction (as appropriate) •Withdrawal of drugs that worsen the condition •Spironolactone when symptoms remain severe with other therapies Stage D Presence of advanced symptoms, after assuring optimized medical care All therapies under Stages A, B and C + evaluation for: •Cardiac transplantation •Ventricular assist devices •Surgical options •Research therapies •Continuous intravenous inotropic infusions •End-of-life care A patient has an EF of 15% and is a candidate for a heart transplant. Which AHA stage would he be considered to be? 1. 2. 3. 4. Stage C Stage A Stage D Stage B Heart Failure Risk Factors • Primary risk factors – Coronary artery disease (CAD) – Advancing age • Contributing risk factors – – – – – – – – Hypertension Diabetes Tobacco use Obesity High serum cholesterol African American descent Valvular heart disease Hypervolemia Which of the following are risk factors for Heart Failure 1. Hypertension 2. Myocardial Infarction 3. Diabetes 4. Valvular Disease Classifications • Systolic versus diastolic – Systolic- loss of contractility get dec. CO – Diastolic- decreased filling or preload • Left-sided versus right –sided – Left- lungs – Right-peripheral • High output- hypermetabolic state- pregnancy • Acute versus chronic – Acute- MI – Chronic-cardiomyopathy Symptoms Left Ventricular Failure • Signs and symptoms – – – – – – dyspnea orthopnea PND Cheyne Stokes fatigue Anxiety rales – NOTE L FOR LEFT AND L FOR LUNGS CXR before and after treatment Before treatment After treatment Which of the following is associated with left sided failure? 1. 2. 3. 4. crackles hypoxemia tachypnea Peripheral edema ??????? • WHY DOES THIS OCCUR? Heart Failure Clinical Manifestations • Acute decompensated heart failure (ADHF) – Pulmonary edema, often life-threatening • Early – Increase in the respiratory rate – Decrease in PaO2 • Later – Tachypnea – Respiratory acidemia Heart Failure Clinical Manifestations • Acute decompensated heart failure (ADHF) • Physical findings (like ARDS) • Orthopnea • Dyspnea, tachypnea • Use of accessory muscles • Cyanosis • Cool and clammy skin Acute decompensated heart failure (ADHF) Clinical Manifestations • Physical findings • *Cough with frothy, blood-tinged sputumwhy??? • Breath sounds: Crackles, wheezes, rhonchi • Tachycardia • Hypotension or hypertension • 4 groups base on hemodynamics and clinical status – Dry -warm – Dry-cold – Wet-warm- most common (adequate perfusion but fluid overload) – Wet -cold QuickTime™ and a YUV420 codec decompressor are needed to see this picture. Case study of Heart Failure in Lewis online resources Pulmonary Edema (advanced L side HF) • When PA WEDGE pressure is approx 30mmHg – Signs and symptoms • 1.wheezing • 2.pallor, cyanosis • 3.Inc. HR and BP • 4.s3 gallopThe Auscultation Assistant - Rubs and Gallops • 5.rales,copious pink, frothy sputum An S3 or ventricular gallop is associated with heart failure. 1. True 2. False Person literally drowning in secretions Immediate Action Needed Goals of Treatment • MAD DOG • Improve gas exchange (much like ARDS) – – – – O2 intubate elevate HOB BIPAP Right Heart Failure • Signs and Symptoms – fatigue, weakness, lethargy – wt. gain, inc. abd. girth, anorexia,RUQ pain – elevated neck veins – Hepatomegaly +HJR – may not see signs of LVF- why?? Images of Congestive Heart failure Can Have RVF Without LVF • What is this called and what causes it? COR PULMONALE Blue bloater This results from pulmonary hypertension.How does this affect afterload? Pulmonary hypertension is to Cor Pulmonale as Arterial hypertension is to: 1. Decreased cardiac output 2. Left sided heart failure 3. Right sided heart failure 4. Myocardial infarction Heart Failure Complications • Pleural effusion • Atrial fibrillation (most common dysrhythmia) – Loss of the atrial contraction (kick) can reduce CO by 20% – Promotes thrombus/embolus formation increasing risk for stroke – Treatment may include cardioversion, antidysrhythmics, and/or anticoagulants Heart Failure Complications • High risk of fatal dysrhythmias (e.g., sudden cardiac death, ventricular tachycardia) with HF and an EF <35% (Use of ICDs and CRT) – HF can lead to severe hepatomegaly, especially with RV failure • Fibrosis and cirrhosis can develop over time – Renal insufficiency or failure Ventricular tachycardia is the most common arrhythmia with heart failure 1. True 2. False Heart Failure Diagnostic Studies • Primary goal is to determine underlying cause – – – – History and physical examination( dyspnea) Chest x-ray ECG Lab studies (e.g., cardiac enzymes, BNP) electrolytes – EF One of the first signs of Heart failure is: 1. Decreased cardiac output 2. Edema 3. Shortness of breath 4. Atrial fibrillation Heart Failure Diagnostic Studies – Hemodynamic assessment-Hemodynamic Monitoring-CVP- (right side) and SG(left and right side) – Echocardiogram-TEE best (EF) – Stress testing- exercise or medicine – Cardiac catheterization- determine heart pressures ( inc.PAW ) CVP is to right side preload as _____is to left side preload 1. 2. 3. 4. PAD PAW Cardiac output Arterial B/P Transesophageal echocardiogram TEE Nursing Assessment • • • • • • • Vital signs PA readings Urine output --------------------------------------------------------------- Nursing Diagnosis – Activity intolerance – Decreased cardiac output – Fluid volume excess – Impaired gas exchange – Anxiety – Deficient knowledge Decreased cardiac output • • • • Plan frequent rest periods Monitor VS and O2 sat at rest and during activity Take apical pulse Review lab results and hemodynamic monitoring results • Fluid restriction- keep accurate I and O • Elevate legs when sitting • Teach relaxation and ROM exercises Activity Intolerance • • • • • • Provide O2 as needed practice deep breathing exercises teach energy saving techniques prevent interruptions at night monitor progression of activity offer 4-6 meals a day Fluid Volume Excess • • • • • • • Give diuretics and provide BSC Teach side effects of meds Teach fluid restriction Teach low sodium diet Monitor I and O and daily weights Position in semi or high fowlers Listen to BS frequently Knowledge deficit • • • • • Low Na diet Fluid restriction Daily weight When to call Dr. Medications 3 Main Goals- in acute as well as chronic HF • Decrease preload • Decrease afterload • Increase contractility How to Achieve Goals • Decrease preload – Dec. intravascular volume-diuretics, natrecor – Dec venous return • Fowlers • MSO4 and Ntg • Decrease afterload– – – – – ACE (pril or ril), ARB (sartans), Vasodilators, beta blockers (al or ol) BiDil (combination drug containing isosorbide dinitrate and hydralazine) approved only for the treatment of HF in African Americans Increase Contractility • Improve cardiac function – For patients who do not respond to conventional pharmacotherapy (e.g., diuretics, vasodilators, morphine sulfate) • Inotropic therapy – Digitalis – -Adrenergic agonists (e.g., dopamine) – Phosphodiesterase inhibitors (e.g., milrinone) – Question use of calcium channel blockers – New calcium sensitizer – CRT Other • Balance supply and demand of oxygen – Inc. O2- O2, intubate, HOB up,Legs down, mech vent with PEEP – Dec. demand-beta blockers, rest, dec B/P Manage symptoms Chronic Heart Failure Manifestations • FACES – – – – – Fatigue Activity-limitations Chest congestion, cough Edema Shortness of breath Heart Failure- Chronic • Overall long term goals of therapy for ADHF and chronic HF – Decrease patient symptoms – Improve LV function – Reverse ventricular remodeling – Improve quality of life – Decrease mortality and morbidity PATIENT TEACHING Joint Commission has mandated 6 areas of discharge teaching Discharge Teaching 6 areas • • • • • • Weight Monitoring Medications Activity Diet What to do if symptoms worsen Follow-up Weight Monitoring • Weight reduction recommendations must be individualized and culturally sensitive • Same scale every day at same time • Preferably in the morning after voiding • Report weight gain of 3 or more pounds in two days or 3-5 or more in 1 week. Activity • Instruct patient in energy-conserving and energyefficient behaviors • Improves symptoms but often not prescribed • Cardiac Rehab program • Goal is 150 minutes per week • Walking, biking, swimming or a combo is recommended • Nutritional therapy Diet – Diet and weight reduction recommendations must be individualized and culturally sensitive – Dietary Approaches to Stop Hypertension (DASH) diet is recommended • Avoid fats such as butter and margarine • Avoid fried foods • Read labels for hidden sodium – Sodium is usually restricted to 2.5 g per day • Avoid any food with more than 400mg of sodium – Alcohol- limit women 1 drink, men 2 drinks – Fluid restriction may or may not be required Medications – Medications (lifelong) diuretics, vasodilators, positive inotropics • Diuretics- loop, thiazides, spirinolactone (aldactone) • Vasodilators- Ntg, • Postive inotropics- digoxin – Taking pulse rate • Know when drugs (e.g., digitalis, -adrenergic blockers) should be withheld and reported to health care provider • Home BP monitoring – Signs of hypo- and hyperkalemia if taking diuretics that deplete or spare potassium When to call Dr. • Symptoms worsen – – – – – Shortness of breath Edema Weight gain Side effects of medications Chest pain 4 Core Measures for Heart Failure • Discharge instructions- weight, activity, medications, follow up and when to call dr. • LV function is documented (EF) • If EF less than 40% on ACE or ARB • Smoking Cessation Follow-up • Frequent follow-up with physician • Home health care may be needed – Monitor symptoms – Effects of medications and side effects – Blood draws for potassium • Other – Stop smoking – Flu and pneumonia vaccines – Refer to local support group Chronic HF • Ways to achieve goals: – – – – CRT Intraaortic balloon pump (IABP) therapy Ventricular assist devices (VADs) Destination therapy—permanent, implantable VAD CRT-Cardiac Resynchronization Therapy HOW IT WORKS: Standard implanted pacemakers are equipped with two wires (or "leads") that conduct pacing signals to specific regions of the heart (usually at positions A and C). The biventricular pacing devices have added a third lead (to position B) that is designed to conduct signals directly into the left ventricle. The combination of all three leads creates a synchronized pumping of the ventricles, increasing the efficiency of each beat and pumping more blood on the whole. Non-pharmocological Therapies cont. • Intraaortic balloon pump (IABP) • Ventricular assist device (VAD) – Takes over pumping for the ventricles – Used as a bridge to transplant Artificial Heart Cardiomyoplasty-wrap latissimus dorsi around heart Ventricular reduction surgery-ventricular wall is resected Intraaortic Balloon Pump (IABP) • Provides temporary circulatory assistance – Used for cardiac shock – Allows heart fo rest – ↓ Afterload – Augments aortic diastolic pressure • Outcomes – Improved coronary blood flow – Improved perfusion of vital organs YouTube - IABP Intraaortic Ballon Pump IABP Fig. 66-14 Ventricular Assist Devices (VADs) • Indications for VAD therapy – Patients with New York Heart Association Classification IV who have failed medical therapy LVAD Heart Mate http://www.clevelandclinic.org/heartcenter/ pub/guide/disease/heartfailure/lvad_devices. htm Cardiomyoplasty technique: the left latissimus dorsi muscle (LDM) is transposed into the chest through a window created by resecting the anterior segment of the 2nd rib (5 cm). The LDM is then wrapped arround both ventricles. Sensing and pacing electrodes are connected to an implantable cardiomyostimulator heartnet ventricular support system Cardiac Transplantation Nursing Management • Treatment of choice for patients with refractory end-stage HF, inoperable CAD and cardiomyopathy – Goal of the transplant evaluation process is to identify patients who would most benefit from a new heart Cardiac Transplantation Nursing Management • Transplant candidates are placed on a list – Stable patients wait at home and receive ongoing medical care – Unstable patients may require hospitalization for more intensive therapy – The overall waiting period for a transplant is long, and many patients die while waiting for a transplant Cardiac Transplantation Nursing Management • Surgery involves removing the recipient’s heart, except for the posterior right and left atrial walls and their venous connections • Recipient’s heart is replaced with the donor heart • Donor sinoatrial (SA) node is preserved so that a sinus rhythm may be achieved postoperatively • Immunosuppressive therapy usually begins in the operating room Cardiac Transplantation Nursing Management • Infection is the primary complication followed by acute rejection in the first year after transplantation • Beyond the first year, malignancy (especially lymphoma) and coronary artery vasculopathy are major causes of death Cardiac Transplantation Nursing Management • Endomyocardial biopsies are obtained from the right ventricle weekly for the first month, monthly for the following 6 months, and yearly thereafter to detect rejection Cardiac Transplantation Nursing Management • Peripheral blood T lymphocyte monitoring to assess the recipient’s immune status • Care focuses on – – – – Promoting patient adaptation to the transplant process Monitoring cardiac function Managing lifestyle changes Providing relevant teaching Blackboard Learning System™ (Release 6) What’s New in Heart Failure? (myoblasts) Myoblasts for the Heart - Watch WebMD Video CHF case 4 Congestive Heart Failure: Overview Heart failure case study http://www.austincc.edu/adnlev4/r nsg2331online/module04/heart_fail ure_case_study.htm Practice Game http://www.quia.com/cb/107511.html Angiotensin-converting enzyme inhibitors , such as captopril and enalapril, block the conversion of angiotensin I to angiotensin II, a vasoconstrictor that can raise BP. These drugs alleviate heart failure symptoms by causing vasodilation and decreasing myocardial workload. Beta-adrenergic blockers , such as bisoprolol, metoprolol, and carvedilol, reduce heart rate, peripheral vasoconstriction, and myocardial ischemia. Diuretics prompt the kidneys to excrete sodium, chloride, and water, reducing fluid volume. Loop diuretics such as furosemide, bumetanide, and torsemide are the preferred first-line diuretics because of their efficacy in patients with and without renal impairment. Low-dose spironolactone may be added to a patient's regimen if he has recent or recurrent symptoms at rest despite therapy with ACE inhibitors, betablockers, digoxin, and diuretics. Digoxin increases the heart's ability to contract and improves heart failure symptoms and exercise tolerance in patients with mild to moderate heart failure. Other drug options include nesiritide (Natrecor), a preparation of human BNP that mimics the action of endogenous BNP, causing diuresis and vasodilation, reducing BP, and improving cardiac output. Intravenous (I.V.) positive inotropes such as dobutamine, dopamine, and milrinone, as well as vasodilators such as nitroglycerin or nitroprusside, are used for patients who continue to have heart failure symptoms despite oral medications. Although these drugs act in different ways, all are given to try to improve cardiac function and promote diuresis and clinical stability. #24 • As the charge nurse in a long-term facility that has RN,LPN and nursing assistant staff members, a plan for ongoing assessment of all residents with a diagnosis of heart failure has been developed. Which activity is most appropriate to delegate to an LVN team leader? • A. Weigh all residents with heart failure each morning • B. Listen to lung sounds and check for edema weekly. • C. Review all heart failure medications with residents every month. • D. Update activity plans for residents with heart failure every quarter. Please make your selection... 1. 2. 3. 4. Choice One Choice Two Choice Three Choice Four #26 • A cardiac surgery client is being ambulated when another staff member tells them that the client has developed a supraventricular tachycardia with a rate of 146 beats per minute. In what order will the nurse take these actions? • A. Call the client’s physician. • B. Have the client sit down. • C. Check the client’s blood pressure. • D. Administer oxygen by nasal cannula #27 • The echocardiagram indicates a large thrombus in the left atrium of a client admitted with heart failure. During the night, the client complains of severe, sudden onset left foot pain. It is noted that no pulse is palpable in the left foot and that it is cold and pale. Which action should be taken next? • A. Lower his left foot below heart level. • B. Administer oxygen at 4L per nasal cannula. • C. Notify the physician about the assessment data. • D. Check the vital signs and pulse oximeter. Please make your selection... 1. 2. 3. 4. Choice One Choice Two Choice Three Choice Four #14 • The nurse is caring for a hospitalized client with heart failure who is receiving captopril (Capoten) and spironolactone (aldactone). Which lab value will be most important to monitor? • A. Sodium • B. Blood urea nitrogen (BUN) • C. Potassium • D. Alkaline phosphatase (ALP) Please make your selection... 1. 2. 3. 4. Choice One Choice Two Choice Three Choice Four