PMID: 3998646Apr 1, 1985

Asynchronous intraventricular recovery as a basis for apparent 'supernormality'

Journal of Electrocardiology
G OretoL Schamroth

Abstract

Various mechanisms have been postulated for the supernormal phase of intraventricular conduction where relatively early impulses are conducted with normal intraventricular conduction and relatively late impulses with abnormal intraventricular conduction. The cases presented here illustrate how asynchronous recovery of conducting tissue may result in fortuitous momentary synchrony early on in the recovery phase with asynchronous conduction properties in the later phases of recovery. This will facilitate potential synchronous conduction early on in the cycle which would result in a normal QRS complex, and potential asynchronous conduction in the later phases which would manifest with a bundle branch block QRS complex.

References

Feb 1, 1976·British Heart Journal·L Schamroth
Nov 1, 1974·Circulation Research·J F Spear, E N Moore
Aug 1, 1972·Circulation·R A MassumiD T Mason
Jan 1, 1971·Journal of Electrocardiology·I A D'Cruz
Apr 1, 1970·Chest·M J Mihalick, C Fisch
Jul 1, 1968·Circulation·G K MoeJ Merideth

Citations

Jun 29, 2014·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Vincenzo CarboneG Oreto
Jan 3, 2006·Journal of Electrocardiology·F LuzzaG Oreto
Apr 1, 1994·Journal of Cardiovascular Electrophysiology·G OretoH Wellens

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Atrial Fibrillation
Atrial Flutter
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Cardiac Pacing, Artificial
Electrocardiographic Recorders
Electrophysiology (Science)
Cardiac Conduction System

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