1、Diagnosis of cardiac and respiratory arrest Assess for a pulse*Circulationpressure，coronary and cerebral perfusion pressure，left ventricular and cerebral blood flowA compensated defibrillation for the second time in limited timeLow-energy levels（150J correspond to 200-300J）Reduce the myocardial inju
2、ry Endotracheal intubation(A)Mechanical ventilation and oxygen therapy(B)Intravenous injection(C)electrocardiogram and blood pressure monitoring,resuscitation open chest cardiac compression(C)Confirmation of Endotracheal tube placement Mark estimated depthBreath sounds by auscultation at 5 locus Tho
3、rax rise as inspirationincrease of Steam in canal of artificial ventilation deviceUse a specific technique or device to prevent tube dislodgmentMechanical ventilationRecommended dosage:Endotracheal administration:NS 20ml+22.5 time recommended doseIntracardiac injection:only in heart operation or che
4、st traumaUsage:40IU iv Amiodarone(1)Amiodarone(2)Magnesium sulfateTorsades de pointes Arrhythmias caused by magnesium deficiencyLoading dose:Only after the confirmed interventions are ineffectivePreexisting metabolic acidosis,hyperkalemia,tricyclic or phenobarbitone overdose Protracted arrest or lon
5、g resuscitative effortsAcid-base balance:chest compressions ROSC adequate alveolar ventilation and restoration of tissue perfusionCO2 more freely diffusible than HCO-into myocardial and cerebral cells intracellular acidosisInitial dosage：Etiological factors restoration of spontaneous circulation Dopamineimmediately after ROSC Cerebral resuscitation Patient is in astate or terminal condition certified by 2 physicians,including 1 with special expertise in evaluation cognitive function
