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You need to do CPR (cardiopulmonary resuscitation) when or if a person's heart is not beating and pumping blood - which accounts for the C (cardio) portion of CPR. Coincident with the non-pumping heart, the person will stop breathing so CPR also has a "pulmonary", i.e. involving the lungs, component where air is blown into the lungs in conjunction with the the chest compressions and/or defibrillator taking care of "cardio" part.

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7y ago

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