How deeply should the sternum be depressed when applying chest compressions on an adult victim during CPR?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 1-1/2 to 2 inches
Standard cardiopulmonary resuscitation (CPR) protocols for adults require compressing the sternum downward to a depth of 1.5 to 2 inches (4 to 5 cm) at a rate of 100 to 120 compressions per minute to effectively maintain artificial circulation.
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