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The American Heart Association highlights the most important steps of BLS in a "five-link chain of survival." [11] The chain of survival includes early recognition of an ongoing emergency, early initiation of CPR by a bystander, early use of a defibrillator, and early advanced life support once more qualified medical help arrives. Qualified ...
Cardiopulmonary resuscitation (CPR) is an emergency procedure consisting of chest compressions often combined with artificial ventilation, or mouth to mouth in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest.
The ABC system for CPR training was later adopted by the American Heart Association, which promulgated standards for CPR in 1973. As of 2010, the American Heart Association chose to focus CPR on reducing interruptions to compressions, and has changed the order in its guidelines to C irculation, A irway, B reathing (CAB).
The CPR mask is the preferred method of ventilating a patient when only one rescuer is available. Many feature 18 mm (0.71 in) inlets to support supplemental oxygen , which increases the oxygen being delivered from the approximate 17% available in the expired air of the rescuer to around 40-50%.
Advanced life support – Life-saving protocols; Advanced cardiac life support – Emergency medical care; Advanced trauma life support – American medical training program
Originally, the chain consisted of four steps: early access to emergency medical care was the first link, the second link was early CPR, early defibrillation was the third link, and the final link was early advanced cardiac life support. [3]
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