cardiopulmonary resuscitation; customary, prevailing,and reasonable.
Cardiopulmonary resuscitation (CPR) that is performed by a layperson (CPR bystander) who is not part of the organized emergency-response system in a community. Since most cardiac arrests occur outside health care institutions, bystander CPR is an essential part of the chain of survival.
SEE: CPR bystander
dispatcher-assisted bystander CPR
CPR that improves blood flow to vital organs. It depends on the rate, depth and fraction of chest compressions; the rate of ventilation; and the rapidity with which indicated electrical shocks are delivered to the heart.
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