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Concealed conduction in the reentrant pathway as a mechanism of stable ventricular quadrigeminy.

Abstract：

:This is the first report on the stable occurrence of ventricular quadrigeminy as a manifestation of concealed bigeminy in a case of fixed and late coupled ventricular extrasystoles. A 46-year-old man is reported in whom the period of ventricular bigeminy alternated with the period of ventricular quadrigeminy. Coupling intervals of the extrasystoles were fixed and much longer than sinus QT intervals. When the heart rate is decreased, the period of bigeminy changed to the period of quadrigeminy without gradual decrease in coupling of the preceding extrasystoles. Once such a change occurred, stable quadrigeminy is maintained for a period. These findings suggest the possibility that concealed electrotonic conduction of blocked impulses and interference of conducted impulses may occur in the reentrant extrasystolic pathway as a mechanism of stable ventricular quadrigeminy.

journal_name

J Electrocardiol

journal_title

Journal of electrocardiology

authors

Kinoshita S,Mitsuoka T,Katoh T,Oyama Y

doi

10.1016/s0022-0736(00)80106-5

keywords:

subject

Has Abstract

pub_date

2000-01-01 00:00:00

pages

93-7

issue

1

eissn

0022-0736

issn

1532-8430

pii

S0022073600000108

journal_volume

33

pub_type

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