Cardiopulmonary Resuscitation (CPR)

Cardiopulmonary resuscitation (CPR)

A) is most effective when started at least three minutes after cardiac arrest.
B) when performed correctly, keeps oxygen flowing to tissues when the heart stops.
C) requires mouth-to-mouth respiration OR chest compressions, never both.
D) when performed correctly can restart the heart.
E) is true of all of these.