-心肺复苏DiagnosisofcardiacandrespiratoryarrestTraditionalmethods:,coughing,uraterate75%Sensibitity90%Specificity60%Rateoffalse-positive(40%)ResultsPulselessPulseMistakenlylossthesavingopportunityRateoffalse-negative(10%)ResultsPulsePulselessUnnecessarilydoCPRElectrocardiogramchangesofCardiacarrestVentricularfibrillationAflatlineoronlyatrialwavePulselessElectricalActivity,essEarlyCPREarlyDefibrillationEarlyadvancedlifesupport*a(immediatelydoCPR,notclearobstructedairwaysatfirst)BasicLifeSupport---thefirstABCDAirwayABreathingBCirculationCDefibrillationDAirwayTilttheheadbackwardsLiftthejawOpenthemouthClearingobstructedairwaysfromchokingSubdiaphragmaticabdominalthrust(Heimlichmaneuver)
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