Advanced Cardiovascular Life Support (ACLS) Practice Exam

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What survival advantage does CPR provide to a patient in ventricular fibrillation?

Prevents further heart damage
Produces a small amount of blood flow to the heart
Restores normal heart rhythm
Decreases the need for medication

The correct answer is: Produces a small amount of blood flow to the heart

When a patient is in ventricular fibrillation (VF), the heart is unable to effectively pump blood, which can quickly lead to tissue damage and death. Cardiopulmonary resuscitation (CPR) plays a critical role in maintaining some circulation during this emergency. Specifically, by performing chest compressions, CPR provides a small amount of blood flow to the heart and vital organs. This minimal circulation is crucial because it helps to maintain some level of oxygenation and perfusion to the brain and other tissues, which can be vital during the time before more definitive interventions, such as defibrillation, can be applied. While CPR does not restore a normal heart rhythm, it helps to sustain life by delaying the effects of hypoxia and preventing further deterioration of the patient’s condition until advanced medical interventions can take place.