4 doctors weighed in:
How does electrical stimulation of the heart coordinate the cardiac cycle again?
4 doctors weighed in

Dr. Irv Loh
Internal Medicine - Cardiology
3 doctors agree
In brief: Reset own pacemaker
Assuming query is about cardioversion.
There are hierarchies of pacemaker cells in the heart. Fastest one usually takes over. Normal sinus node, then av node or "junction", then purkinje or ventricular pacemakers, in that approximate order. If there is a rhythm disturbance involving a faster abnormal rhythm, an electrical pulse carefully delivered can reset, and allow the fastest normal pacer.

In brief: Reset own pacemaker
Assuming query is about cardioversion.
There are hierarchies of pacemaker cells in the heart. Fastest one usually takes over. Normal sinus node, then av node or "junction", then purkinje or ventricular pacemakers, in that approximate order. If there is a rhythm disturbance involving a faster abnormal rhythm, an electrical pulse carefully delivered can reset, and allow the fastest normal pacer.
Dr. Irv Loh
Dr. Irv Loh
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