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Chapter 14 Clinical observation and Emergency Treatment for critically ill patients Clinical observation is an important part of clinical nursing work. Timely and accurate clinical observation is the basis of diagnosis, treatment and nursing of diseases. Critically ill patients are those who are in serious condition, and may possibly have the danger of life-threatening at any moment. These patients’ conditions change rapidly, so they need the nursing staff to give strict and continual clinical observation, and can take the effective measures promptly when the conditions change suddenly. Timely comprehensive and accurate observation and recording of the patients’ conditions is the basis of rescuing them. Using each kind of resuscitation techniques skillfully is the key to successful resuscitation, which may affect the patients’ life and their quality of life directly. The organization and management of rescuing work is the guarantee of rescuing critically ill patients. SectionⅠ clinical observation Clinical observation is the process in which medical personnel use sense organs such as vision, hearing, smell and touch to obtain the patients’ condition during clinical work, and to make the synthetic judgement to the condition. The purposes of clinical observation ·Providing the scientific basis to the diagnosis, treatment and nursing of diseases. ·Forecasting the trend and outcome of diseases. ·Knowing the effectiveness of treatment and medication effects on patients timely. ·Finding the signals of the changes of critically ill patients’ conditions, in case of the aggravation of diseases. The requirements of nursing staff In order to observe and record the patients’ conditions exactly and timely, nurses are supposed to be embodied with great responsibility, acute observational ability as well as rich and profound medical knowledge and to implement the principles of being frequent in five aspects. That is, frequent inspection, observation, enquiry, consideration and record. All these will prove to 137 be feasible and effective in well grasping and predicting timely and accurately any changes in the situation of patients so as to win time for duly resuscitation. The methods of clinical observation ·Inspection ·Auscultation ·Palpation ·Percussion ·Smelling Besides the commonly used five methods above, the information of patients’ condition may also be obtained through communicating with doctors, patients’ family members, and reading medical record, the survey report, the consultation report and other correlatively data, in order to observe patients carefully and completely. Contents of clinical observation Observation of general condition ·Development and body figure ·Diet and nutritional status ·Facial features and expression ·Position active lying position, passive lying position, compelled lying position ·Posture and gait waddling gait; drinking man gait; ataxic gait; festinating gait; scissors gait; intermittent claudication; protective claudication ·Skin and mucous membrane mainly observe its color, temperature, humidity, flexibility, and whether there is bleeding, dropsy, skin rash, hypodermic tubercle and cyst. Observation of vital signs ·Body temperature ·Pulse ·Respiration ·Blood pressure 138 Observation of consciousness Consciousness is the comprehensive reflection of how cerebrum reacts to the environment. The normal person should have the clear consciousness, fluent and accurate language, reasonable thought, exact judgment and orientation to the time and place. Disturbance of consciousness is a state of mind that the individuals lack the normal response to the external environment stimulation. Whatever reasons result to the damage of the cerebral cortex function, the disturbance of consciousness may happen. It may be generally divided into: ·Somnolence It’s the lightest disturbance of consciousness. The patients are in a state of continual sleep, but they can be awakened by speaking to them or mild stimulation. After awaking, they can answer questions correctly, simply and slowly, but the response is very slow. They may fall asleep again after the elimination of stimulation. ·Confusion Patients may have incoherent thought and language, and the barrier to orientation to the time, place and person completely or partly. They may also have the illusion, restless moving, raving or dementia. ·Stupor Patients are in sound sleep, not easy to wake up. The strong stimulation may awaken them. But they reply ambiguously or irrelevantly after awaking, and fall in sound sleep again after stopping the stimulation. ·Coma It’s the most serious of disturbance of consciousness. ①Light coma: The majority of consciousness has been lost. Patients have no independent movement. There are no response to the sound and the light stimulation. They may have the painful expression and the withdrawal to pain to the ache stimulation. The pupil’s light reaction, the corneal reflex, the eye movement, the swallowing reflex and the cough reflex nay exist. The breath and blood pressure change unobviously. There may be the feces and urine incontinence or retention. ②Deep coma: Consciousness loses completely. No response to any kind of impetusing. The whole body muscle is relaxed. The deep reflex vanishes. Organism can only maintain the most basic function of circulation and breathing. The breath is anomalous, and the blood pressure may drop. There are the feces and urine incontinence or retention. In hospital medical workers may also use Glasgow Coma Scale to assess the consciousness of a patient. The scale was published in 1974 by Graham Teasdale and Bryan J. Jennett, professors 139 of neurosurgery at the University of Glasgow. It is a neurological scale which aims to give a reliable, objective way of recording the conscious state of a person. GCS was initially used to assess level of consciousness after head injury, and the scale is now used by first aid and EMS (Emergency Medical Service). In hospital it is also used by medical and nursing staff for initial as well as continuing assessment in chronic patient monitoring, in for instance, intensive care. The scale comprises three tests: eyes opening (4 grades), verbal response (5 grades), and motor responses (6 grades). The three values separately as well as their sum are considered. A patient is assessed against the criteria of the scale. The highest possible GCS (the sum) is 15 (fully awake person), while the lowest is 3 (deep coma or death). If the score is less than 7 and more than 3, it’s light coma. Table 14-1 The Glasgow Coma Scale (GCS) Test Best Eye Opening Best Verbal Response Best Motor Response State Score Eyes opening Spontaneously Eye opening to speech Eye opening in response to pain (Pain from sternum/limb/supra-orbital pressure) No eye opening(Even to supra-orbital pressure) 4 3 2 Oriented: (Patient knows who he is, where he is and why, the year, season, month etc.) Confused conversation: (The patient responds to questions coherently but there is some disorientation and confusion.) Inappropriate words. (Random or exclamatory articulated speech, but no conversational exchange) Incomprehensible sounds. (Moaning but no words.) No verbal response 5 Obeying command: (The patient does simple things you ask ) Localizing response to pain: (Purposeful movements towards painful stimuli; e.g., hand crosses mid-line and gets above clavicle when supra-orbital pressure applied.) Flexion/Withdrawal to pain: Pulls limb away from painful stimulus. Abnormal flexion to pain: Pressure on the nail bed causes abnormal flexion of limbs – “decorticate posture”. Extension to pain: (adduction of arm, internal rotation of shoulder, pronation of forearm, extension of wrist, decerebrate response) No motor response (No response to pain) 6 5 140 1 4 3 2 1 4 3 2 1 Observation of pupils When the patient suffers the encephalic disease, and is in conditions of drug poisoning and stupor, pupil's changes are an important indication of the changes of the condition. When the medical workers observe the pupil, they should pay more attention to the shape, the size, the symmetry, the edge and to the light response of both sides pupils. ·The shape, size and symmetry of pupils Normally, pupils are round and in the middle of eyes. The edges of them are tidy. It’s the same size and circle on both sides. Under the natural light, pupil's diameter is generally 2~5mm. In the pathology situation, pupil's size may have some changes: ① Shrinking: Shrinking means that the diameter of a pupil is smaller than 2mm. If the pupil’s diameter is smaller than 1mm, it can be called the pinpoint pupil. Unilateral pupil diminished may indicate the earlier stage of transtentorial hernia. Lateral pupil diminished may be seen when there are poisoning conditions of organophosphorous insecticides, chlorpromazine and morphine. ② Largening: When the pupil’s diameter is bigger than 5mm, it can be called the mydriasis. One side pupil dilated and fixed may indicate the occurrence of transtentorial hernia which caused by same side intracranial hematoma or brain tumor. Bilateral pupil dilated commonly is seen with the state of intracranial hypertension, craniocerebral injury, Belladonna poisoning and dying. ·Light reaction In normal condition, pupil gets smaller in luminous place, and bigger in dark hidden place. If the size of pupil does not change along with photic stimulation, it means the vanishing of pupil’s light reaction, which is generally seen in seriously injured or the deep stupor patients. Observation the state of psychology Observation of diagnostic studies or drug treatment ·Observation after diagnostic studies or treatment Nurses should grasp the notes to nursing around the check-up, observe the vital signs closely, and listen attentively to the patient’s complaints in order to prevent the complication. ·Observation of patients treated by special drugs Nurse should observe the effects, the side effects and the toxicity of medications. 141 Observation of other aspects Section Ⅱ Resuscitation and care for critically ill patients It is a urgent task for medical and nursing staff to rescue critically ill patients. Rescue requires closely knit organization, reasonable assignment, essential and perfect equipment, as well as skilled medical workers and necessary first-aid medicine, which will make sure the rescue is carried out timely, accurately and effectively. Organization and management of resuscitation ·Resuscitation team should be made up immediately. Generally the director and head nurse is responsible to organize the rescue in ward. All medical workers must obey the direction. ·Resuscitation plan should be formulated. The nursing staffs should work out the nursing plan according to patient's situation and the rescue plan. They must identify nursing diagnosis, establish expected outcomes, and design nursing interventions. ·Nurses should cooperate with doctors to carry on the rescue, complete the record and the verification of the rescue. Rescue record should be Timely, Accurate, Complete, neat and legible, and the time of executing and performer should be noted. When the physician gives oral orders, nurses who are assisting him or her have to repeat the order once again and make sure it is correct. After the emergency the physician should record and sign all orders and prescriptions that were given. All empty ampoules, solution container, the blood bag and so on in the rescue should be reserved in order to check. ·Nurses should continue with the clinical observation after rescue and pass nursing report to the next shift nurses. ·Nurses should attend while doctors conduct the ward round, make consultations and discuss the cases of illness. They should be familiar with conditions, the key monitoring items and the rescue process of critically ill patients, in order to achieve appropriate cooperation. Management of resuscitation equipments Resuscitation room Resuscitation bed Resuscitation cart 142 ·Emergency drugs: Include central nervous stimulant; pressure-rising drugs/hypertension drugs; cardiotonic; diuretic; hemostatic; antidote (detoxicants); analgesia and sedative, etc. ·Emengency sterile packages: Include venetomy packeage; endotracheal intubation package; tracheostomy package; puncture package, etc. ·Others: Include Sphygmomanometer; Stethoscope; gag; tongue blade; tongue forceps; forceps; flash light; tourniquet; Syringes; Antiseptic solution; Sterile swab; Tape; alcohol burner; Sterile glove; power plug, etc. Emergency equipments: Include oxygen source; suction apparatus; portable or wall suction apparatus; electrical defibrillator; pacemakers; ECG monitor; Ambu-bag; Respirator; Automatic gastrolavage machine, etc. Management of equipments and drugs in resuscitation room All the equipments mustn’t be lent out. And they must be cleaned timely after being used, returned to the original place and supplemented in case of the next rescue. Guarantee the soundness of all emergency equipments. Strictly implement the “Five Fixed” system, that is, fixed amount, fixed places to arrange, fixed staff in charge, disinfecting at fixed time, and maintenance at fixed periods. Resuscitation skills commonly used Cardio-pulmonary Resuscitation If a client's hypoxia is severe and prolonged, cardiac arrest may result. A cardiac arrest is the cessation of cardiac function. When it occurs, the heart no longer pumps blood to any organ of the body. Breathing then stops, and the person becomes unconscious and limp. Within 20 to 40 seconds of a cardiac arrest the person is clinically dead. After 4 to 6 minutes the lack of oxygen supply to the brain causes permanent and extensive damage. The three cardinal signs of a cardiac arrest are apnea, absence of a carotid or femoral pulse, and dilated pupils. The person's skin appears pale or grayish and feels cool. Cyanosis is evident when respiratory function fails prior to heart failure. A respiratory arrest is the cessation of breathing. It often occurs after a blocked airway, or following a cardiac arrest and for other reasons. It may occur abruptly or be preceded by short, shallow breathing that becomes increasingly labored. Cardio-pulmonary Resuscitation (CPR) is a combination of oral resuscitation that supplies 143 oxygen to the lungs, and external cardiac massage (chest compression), which is intended to reestablish cardiac pump function and blood circulation. It is also called as basic life support, which consists of ABC process: A-airway, B-breathing, and C-circulation. All nurses should be trained to perform CPR procedures so that resuscitation measures can be initiated immediately when a cardiac arrest or respiratory arrest occurs. The cardinal signs of a cardiac arrest ·Unconsciousness ·Absence of a carotid pulse ·Apnea ·Dilated pupils ·Pale or cyanosed skin ·Absence of heart sounds ·Nil bleeding from wound Skill 14-1 Cardio-pulmonary Resuscitation Purposes ·To establish artificial respiration and circulation ·To circulate oxygenation blood to the brain to prevent permanent tissue damage Indications Cardiac arrest and/or respiratory arrest Contraindications ·Presence of heart beat and breathing ·Severe injuries to thorax or heart ·Severe deformity of thorax and spine Equipment ·Ambu-bag if available ·CPR pocket mask or barrier if available ·Chest compression board and step bench if available ·Resuscitation cart if available 144 ·Sphygmomanometer and stethoscope ·Face shield and gloves if available Procedures and Key Points Steps Rationale and Key Point 1. Determine if the client is unconscious by shaking client's shoulders and shouting near the client's ears 2. Activate emergency medical services or call other people for help 3. Assess the breath and carotid or brachial (use with infants) pulse 4. Place victim on hard surface such as backboard, ground, or floor. Put the client to be flat. Take away pillow under client's head and loosen client's collar and belt ·To confirm that the client is unconscious as opposed to intoxicated, sleeping, or hearing impaired 5. Assume correct and comfortable position for the rescuer 6. If available, apply gloves and face shield 7. Open airway: (1) Use head-tilt/ chin-lift method: The rescuer tilts the client's head back with one hand while lifts up client's chin with another hand (2) Use head-tilt/neck-lift method: The rescuer raises client's neck with one hand and tilts the client's head back with another hand (3) Jaw thrust method: The rescuer grasps angles of victim's lower jaw and lift with both hands, displacing mandible forward while titling head backward 8. If readily available, insert oral airway 9. If the client does not resume breathing, administer artificial breathing. (1) Mouth to mouth: Pinch the client's nose · Presence of pulse and respiration contraindicates initiation of CPR ·In the procedure of chest compression, the heart is compressed between sternum and spinal vertebrae, which must be on a hard and firm surface. Place chest compression board under client's shoulder and back for those who lie on the soft mattress ·Correct position avoids fatigue and promotes more effective compressions ·To reduce transmission of microorganisms ·The tongue is the most common cause of airway obstruction in an unconscious client. Airway obstruction from the tongue is relieved through opening airway. If necessary, remove foreign body from the mouth ·It is applicable for client with no neck trauma ·When head and / or neck trauma is suspected, this maneuver opens the airway while maintaining proper head and neck alignment, thus reducing the risk further damage to the neck ·Maintains tongue on anterior floor of mouth and prevents obstruction of posterior airway by tongue ·Airtight seal is formed, and air is prevented 145 with thumb and index finger, and occlude mouth with rescuer's mouth or use CPR mask. Blow two slow, full breaths into the client's mouth (each breath should last 1 seconds); allow the client to exhale between breaths by loosing the nose from escaping through nose ·Hyperventilation is promoted and assists in maintaining adequate blood oxygen levels. In most adults this volume is 700 to 1000ml and is sufficient to make the chest rise ·Maintain head tilt-chin lift while administering breaths which allows air enters the lungs ·Blowing rate for adults is 10-12 per minute, 12-20/min for children and infants · Chest movement can be observed when blowing is performed effectively (2) Mouth-to-nose: Keep victim's head titled with one hand on forehead. Use other hand to lift jaw and close mouth. Seal nurse's lips around victim's nose and blow. Allow passive exhalation ·For the clients whose mouths can not be opened or jaws or mouths are seriously injured, mouth-to-nose ventilation can be more effective ·Blowing with more time and effort overcomes resistance from nose (3) Mouth-to-mouth/ nose: Seal nurse's lips around both victim's nose and mouth and blow (4) Ambu-bag: Use proper-size face mask and apply it under chin, up and over victim's mouth and nose for both adult and child victim 10. Observe for rise and fall of chest wall with each respiratory. Listen for air escaping during exhalation, and feel for flow of air. If lungs do not inflate, reposition head and neck and check for visible airway obstruction, such as vomitus ·It is applicable for infants and young children ·Blowing with less time and effort · If it is feasible, endotracheal tracheal intubation is performed for effective artificial breathing and maintaining patent of airway 11. After two breathes, check for presence of carotid (adults) or brachial (infants) pulse · Carotid artery pulse is the most easily accessible and persists when other peripheral pulse are no longer palpable 12. If pulse is absent, initiate chest compressions: (1) Adult: Using two fingers of one hand marks the xiphoid process and then placing the heel of the other hand next to them. The hand marking the xiphoid process can then be moved and placed on top of the other hand. Keeps hands parallel to chest and fingers above chest. Interlocking fingers is helpful. Keep fingers off chest wall. Extend arms and · Correct place of chest compression is junctional place between middle and lower 1/3 of sternum. Correct placement of hands and fingers over sternum prevents rib fracture, damage to abdominal organs, reflux of gastric content, and other complications ·Compression occurs only on sternum and is meant to squeeze the heart between the sternum 146 lock elbow. Maintain arms straight and shoulders directly over victim’s sternum and compress sternum to proper depth from shoulders and then release pressure, maintaining contact with skin to ensure ongoing proper placement of hands. Do not rock, but transmit weight vertically down (2) Child: Place the hands on the breastbone at the nipple line. Maintain head titlet with other hand, if possible, to maintain patent airway (3) Infant: Place index and middle fingers of one hand above xiphoid process. Fingers should be 1cm below nipple line and perpendicular to sternum and not slanted 13. Palpate for carotid or brachial pulse with each external chest compression for first full minute (the other rescuer does it). If the carotid pulse is not palpable, compressions are not strong enough or hand position is incorrect 14. Assess carotid pulse at 5-minute intervals following first minute of CPR 15. If the client restores automatic breath and heat beat, refer him or her to the hospital for advanced life support 16. Records in nurse's notes and appropriate code sheet about onset of arrest, medication and other treatments given, procedures performed, and victim's responses and spin. Pressure necessary for externa1 compression is created by the rescuer's upper arm muscle strength and upper body. When compression is released, the heart fills The ratio of compressions to breath is 30 to 2 (for one or two rescuer ) ·Time ratio of compression and relaxation is 1:2 ·Proper depth of compression: Adult and adolescent: 4 to 5cm Older child: 3 to 4cm Toddler and preschooler: 2 to 4cm Infant: 1 to 2cm ·To maintain proper rate of compression: Adult and adolescent: 100/min Child: 100/ min Infant: at least 100/min ·The ratio of compressions to breath for one rescuer is 30 to 2, for two rescuer, the ratio is 15 to 2 ·The index of effect external chest compression includes presence of big artery pulse, systolic blood pressure above 60mmHg, and skin and lip's color turning to red · Artificial cardiopulmonary function is maintained · To continue CPR until victim regains spontaneous pulse and respirations, or physician discontinues CPR · To document the adequacy of artificial circulation and adequacy of artificial cardiopulmonary function ·CPR is not interrupted for more than 5 seconds ·CPR includes basic life support, advanced life support, and prolonged life support ·To ensure the continuity of emergency care 147 Skill 14-2 Gastric lavage Gastric lavage is a medical approach for therapeutic irrigation of stomach by inserting a gastrolavage tube to stomach via mouth or nasal cavity, through which certain quantity of irrigating solution is pumped into stomach by gravity, siphonage, and negative pressure suction. Purpose ·Detoxification: Clear the stomach contents or other harmful substance. ·Alleviate the edema of stomach mucosa: Wash out food in stomach; Alleviate stimulation, edema and inflammation of stomach mucosa. ·preparations needed before some operation or diagnostic studies Indication ·Acute toxicosis, especially within 6h after it ·Before some operation or check Contraindications ·Clients who have ingested erosive (alkali or acid) substance. ·Convulsion patients, because the tube insertion may increase severity and frequency of seizures. ·Cirrhosis of liver with esophageal and gastric varication; thoracic aortic aneurysm; upper alimentary tract hemorrhage; upper alimentary tract ulcer; gastric perforation; cancer of stomach, etc. Common antidotes and contraindicated medications(Table 14-2) Table 14-2 Common antidotes and contraindicated medications Toxicant Irrigating Solution Acid substance Alkaline substance Cyanide Milk of magnesia, egg-water, milk 5% acetic acid, egg-water, milk Induction of vomiting with 3% hydrogen peroxide solution first, then irrigation with 1:15000-1:20000 Potassium Permanganate Gastrolavage with 2%-4% baking soda, l% saline, 1:15000-1:20000 Potassium Permanganate Gastrolavage with 2%-4% baking soda Strong acid medication Strong alkaline medication Gastrolavage with 1% saline or water, 1:15000-1:20000 Potassium Permanganate Alkaline medication Dichlorvos 1605 1059 4049 Dipterex 148 Contraindicated Medications Potassium Permanganate DDT 666 Phenols saponated cresol Phenol Barbital Isoniazid Phosphatic zinc Gastrolavage with warm water or. normal saline, 50% magnesium sulfate catharsis Gastrolavage with warm water and vegetable oil until no phenols smell, then ask the client to drink milk, or egg white to protect stomach mucosa Gastrolavage with 1:15000-1:20000 Potassium Permanganate Gastrolavage with 1:15000-1:20000 Potassium Permanganate, catharsis with Sodium sulfate Gastrolavage with 1:15000-1:20000 Potassium Permanganate, catharsis with Sodium sulfate Gastrolavage with 1:15000-1:20000 Potassium Permanganate, or 0.1% copper sulphate Oil cathartic Egg, milk, fat and others The preparation before operation · Assessment assess the client and explain to him or her the purpose and method of Gastrolavage and precautions taken during operation. ·Equipments Tray ·Filler gastrolavage tube, forceps, and gauze (packed with sterile towel) ·Toilet paper ·Adhesive tape ·Paraffin oil ·Kidney tray ·Sterile cotton swab ·Plastic apron ·Measuring cup · Thermometer ·Tongue blade ·Mouth-gag ·Irrigating solution (25°C-38°C) ·Buckets (one for filling gastrolavage irrigation, one for filling waste water) ·Test container or test tube Equipment for gastrolavage with electric suction apparatus ·Electric suction apparatus ·Gastrolavage tube (without filler) ·IV pole, bottle, and tube ·Y-tube 149 ·Clamp Equipment for lavage with automatic gastrolavage machine ·Automatic gastrolavage machine ·Gastrolavage tube (without filler) Procedures and Key Points Steps Rationale and Key Point 1.Wash hands, and wear mask, and prepare the irrigating solution ·When nurses don't know the poison, choose warm water or normal saline. After nurses know the poison, choose relevant antagonist 2.Prepare the equipment and take them to the client 3.Check the client's bed number and name according to the physician's order ·Gastrolavage requires a physician's order 4.Explain the purpose and procedure to the client, instruct the client how to cooperate ·Reduce the client's anxiety and make him understand the procedure 5.Assist the client to a suitable position. Place a rubber apron across the client's chest, place a tray under the mandible, and buckets in front of seat or under the head of bed ·Oral emetic method: clients can have a sitting position ·Gastric tube gastrolavage: clients who are mild intoxication can have a sitting position or Fowler's position; clients who are severe intoxication can have left side-lying position ·Coma: clients should have a supine position, and the pillow is removed, and the client's head is turned to one side 6.Gastrolavage Oral emetic method (1) Ask the client to drink a lot of irrigating solution, and induce vomiting. Nurses can also use tongue blade to· press client's lingual root to induce vomiting if necessary (2) Irrigating repeatedly until the returns from stomach are clear and without smell Gastric tube-filler irrigating gastrolavage (1) The procedure of inserting the filler gastric tube is similar to the procedure of inserting the nasogastric tube. The tube is inserted into 55-60cm, and is confirmed in stomach. The adhesive tape is used to fix the tube · This procedure is applied to clients with consciousness who can cooperate with nurses ·The client drinks 400-500ml fluid once ·This shows that the poison is eliminated · The act of inserting tube should be gentle and safe 150 (2) Lower the filler below the level of stomach, crush the rubber ball and aspirate stomach contents (3) Raise the filler 30-50cm over the client's head and pour 300-500ml irrigating solution into the filler. When there are few solutions in the filler, lower the filler below the level of stomach and inverses filler in the bucket rapidly (4) Repeat irrigating until the returns from stomach are clear and without smell Gastic tube-electric gastrolavage suction apparatus (1) Electrify suction apparatus and check its function (2)Connect transfusion tube with main tube of Y-tube. Join gastrolavage tube and irrigating tube to two branches of Y-tube respectively. Pour the irrigating solution to the transfusion bottle, clamp the transfusion tube, and hang it on the IV pole (3)Insert the gastrolavage tube, and confirm the tube in the stomach (4)Start operating the electric suction apparatus and aspirate the contents of stomach ·Crushing the rubber ball can produce negative pressure. Gastric contents need to be sent for test ·The temperature of irrigating solution is 25℃ -38℃. Extreme high temperature makes vasodilatation and accelerates the absorption of poison. Extreme low temperature can cause gastrospasm ·The total amount of irrigating solution is 300-500ml each time. Too much solution can cause gastric retention, accelerate the contents into intestine and increase absorption of the poison. A small amount of irrigating solution cannot irrigate the stomach entirely ·The total quantity of irrigating should be equal to the total quantity of aspirating. This can prevent gastric retention ·Using the negative pressure to aspirate the stomach contents and the poison ·Ensure the effect of negative pressure suction ·The negative pressure is within the range of about 13.3kPa. This can avoid damage to stomach mucosa. When we do not know what kind of the poison is, we can take sample to test (5)Clamp the drainage tube, open the transfusion tube and instill 300-500ml irrigating solution to the stomach (6)Clamp the transfusion tube, open the drainage tube, operate electric suction apparatus, and aspirate the irrigating solution (7)Repeat irrigating until fluid return is clear and without smell 151 Gastric tube-automatic gastrolavage machine (1)Check the function of automatic gastrolavage machine (2)Insert the gastrolavage tube, and confirm the tube in the stomach (3) Pour the irrigating solution into the bucket, and connect three rubber tubes respectively to the medication tube, gastric tube and waste tube. Put the other end of medication tube in the irrigating solution bucket, and put the other end of waste tube in the empty bucket. Attach the other end of gastric tube to client's gastric tube. Adjust the rate of medicine flow (4) Press the manual flush button, and the suction machine begins to aspirate the stomach contents. Then press the “automatic” flush button, and the machine begins to flush stomach automatically (5) If tube is obstructed, slow water flow. If no water flow and other problems occur, we can press manual flush button and manual suction button for flush and suction alternately. Repeat flushing and suction several times until the tube becomes clear. Then press manual button for suction and aspirate the stomach contents. Press automatic button, and the automatic gastrolavage machine will operate (6) After the aspirated fluid is clear, nurses can press stop button, and the automatic gastrolavage machine will stop working 7.Observe the client's face color, pulse, respiration and blood pressure; the color, smell, amount of aspirated fluid; and whether there are complications or not 8. Withdraw the gastric tube. Assist the client with oral hygiene and face washing. Remove the equipment 9. Document relevant information ·The end of medication tube is immerged in irrigating solution all the time ·When the machine begins to flush, the manual flush button lights; When the machine begins to aspirate, the manual suction button lights ·After the tube is clear, nurses should aspirate the stomach contents in advance and then press automatic button. Otherwise excessive irrigating solution can cause gastric retention · Complications of gastrolavage: gastric perforation, water intoxication, fluid and electrolyte imbalance, acute gastrectasia, cardiac arrest ·If abdominal pain, shock occur, nurses should stop gastrolavage at once and take some emergency measures ·Oral hygiene keeps mouth clean and moist, and promotes comfort · Record name, amount of the irrigating 152 solution; the type, smell, amount of the aspirated fluid; and the client's response Evaluation ·Toxicant is effective eliminated. ·Clients' suffering and symptoms are alleviated. ·Correct procedure and no complications. ·Clients can understand the procedure and cooperate with nurses. Supportive care for critically ill patients Regarding the nursing of critical patients, nurses can utilize each kind of rescue technology skillfully, and must strengthen various nursing of patients, such as foundation nursing, in order to reduce the pain of patients, and prevent the complication. Strengthen the monitoring of patients’ condition Nurses should monitor various system functions of critically ill patients continually, such as the central nervous system, circulatory system, respiratory system, urinary system, and so on. Maintain a patent airway Airway maintenance requires proper coughing techniques to remove secretions and keep airway open; and a variety of interventions to assist the patient with alteration in airway clearance, including suctioning, chest physiotherapy, and nebulizer therapy. strengthen the clinical basic care ·Maintain good hygiene of a patient ·Eyes care ·Oral care ·Skin care ·Keep excretory system functions ·Maintain the function of limbs ·Pay attention to patients’ safety ·Keep the drainage tube unobstructed. emphasize psychological care for critically ill patients. 153