Electrophysiology Essentials for Advanced Practice Providers-INTRODUCTION TO ELECTROPHYSIOLOGY: ANATOMY AND PHYSIOLOGY VIDEO

INTRODUCTION TO ELECTROPHYSIOLOGY: ANATOMY AND PHYSIOLOGY VIDEO

Video Transcription

Video Summary

In this video, Maureen Canectel provides an educational overview of the anatomy and physiology of the cardiac conduction system. She discusses the different components of the conduction system, including the sinus node, AV node, bundle of His, bundle branches, and Purkinje fibers. Canectel explains how the electrical cascade begins with the stimulation of individual myocytes and continues through specialized areas of conducting tissue. She emphasizes that cells with the fastest rate of depolarization become the dominant pacemaker, starting with the sinus node, then the AV node, and finally the Purkinje fibers. Canectel also highlights the importance of understanding the action potentials of different cell types within the heart, such as working cells and conducting cells, and how medications can affect these action potentials to either have positive or negative effects. She concludes by discussing concepts related to the refractory periods, antiarrhythmic drugs, and abnormal pathophysiology. The video provides references for further reading on the topic.

Keywords

cardiac conduction system

sinus node

AV node

bundle of His

Purkinje fibers