A 70-year-old woman with ongoing severe atrial fibrillation is scheduled for defibrillation. What is an aspect of the rationale and physiology of defibrillation treatment?
A. Defibrillation can be achieved using either a transcutaneous or transvenous pacemaker.
B. Interruption of disorganized impulses by the current allows the AV node to readopt its normal pacemaker role.
C. Defibrillation must be coincided with the R wave of the ECG in order to be successful.
D. The goal is to depolarize the entire heart during the passage of current.