Which of the following is not true about cardiopulmonary resuscitation (CPR)?: (A) Closed chest massage is as effective as open chest massage, (B) The success rate for out-of-hospital resuscitation may be as high as 30% to 60%, (C) The most common cause of sudden death is ischemic hea disease, (D) Standard chest massage generally provides less than 15% of normal coronary and cerebral blood flow
Answer is A. Closed chest massage is not as effective as open-chest massage in normalizing blood pressure or perfusion of vital organs, and closed chest massage does generally deliver 5% to 15% of normal coronary and cerebral blood flow. The success rate for out-of-hospital resuscitation has been as high as 30% to 60% when communities are prepared to institute CPR early after a cardiac arrest. Ischemic hea disease is the most common cause of sudden death.