RCES Practice Questions - Registered Cardiac Electrophysiology Specialist Exam

Which structure is normally the dominant pacemaker of the heart, and what is its typical intrinsic rate in a healthy adult?

AV node, 40-60 bpm Sinoatrial (SA) node, 60-100 bpm Bundle of His, 30-40 bpm Purkinje fibers, 15-40 bpm

Sinoatrial (SA) node, 60-100 bpm

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