Physiology of the Cardiac Conduction System
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The diagnosis and management of cardiac arrhythmias has progressed rapidly as a science. Advances in the ability to diagnose and either suppress or eliminate arrhythmic substrates has taken an exponential trajectory. Whether utilizing three-dimensional electro-anatomic mapping systems for examining complex arrhythmias in patients with palliated congenital heart disease or genetic analysis in a search for evidence of heritable arrhythmia syndromes, technological advances have improved our ability to observe, diagnosis, and manage rhythm disturbances in patients from fetal life through adulthood. To fully harness the possibilities and continue advancements offered by these new technologies, an understanding of cardiac anatomy and cellular electrophysiology is imperative.
KeywordsAutomaticity Cardiac action potential Ion channels Reentry Resting membrane potential Signal propagation Triggered activity
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