The nurse and student nurse are observing a cardioversion procedure completed by a physician. At which time is the nurse most correct to identify to the student when the electrical current will be initiated?
A) During stimulation of the SA node
B) During repolarization of the heart
C) During ventricular depolarization
D) During the QRS complex
C
Feedback:
The electrical current is initiated at the R wave when ventricular depolarization occurs. The electrical current completely depolarizes the entire myocardium with the goal of restoring the normal pacemaker of the heart. The other options focus on an incorrect timing that will not restore the normal electrical conduction.
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