Electrophysiologic Characteristics of Accessory Connections: An Overview

  • Ruey J. Sung
  • Der-Yan Tai


In a fully developed human heart, the atrial and ventricular myocardium are separated by fibrous atrioventricular (AV) rings (anulus fibrosus) which are insulated to cardiac impulses. An atrial impulse is conveyed to the ventricles by way of the normal AV conduction pathway — the AV node-His-Purkinje system [1,2]. The AV node possesses two unique electrophysiologic properties and functions as a protective barrier [3]: (1) delaying intranodal conduction, and (2) serving as a filter to prevent an excessive number of atrial impulses from reaching the ventricle.


Left Atrial Versus Connection Atrial Premature Beat Retrograde Conduction Complete Left Bundle Branch Block 
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© Martinus Nijhoff Publishing 1986

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  • Ruey J. Sung
  • Der-Yan Tai

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