THE MECHANISM OF FLUTTER INTERVAL ALTERNANS

被引：2

作者：

WAXMAN, MB

KIRSH, JA

CAMERON, DA

WALD, RW

机构：

[1] TORONTO GEN HOSP,DIV CARDIOL,TORONTO M5G 2C4,ONTARIO,CANADA

[2] UNIV TORONTO,DEPT MED,TORONTO M5S 1A1,ONTARIO,CANADA

来源：

PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY | 1990年 / 13卷 / 02期

关键词：

flutter interval alternans;

D O I：

10.1111/j.1540-8159.1990.tb05062.x

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

The mechanism of atrial flutter alternans was investigated by observing the effects of ventricular systole on gutter intervals in a patient with atrioventricular dissociation. Interval measurements were made both from atrial electrograms recorded from an esophageal electrode, and from surface ECG recordings. Flutter cycle intervals that occurred during a well‐defined period subsequent to ventricular systole were consistently prolonged by up to 30 msec relative to the baseline flutter cycle interval. This prolongation was observed in two vastly different electrode configurations, implying that motion artifact was not predominantly responsible. We concluded that, by altering the characteristics of the flutter reentry circuit, transient increases in atrial volume and/or pressure arising during ventricular systole were responsible for the lengthening of the flutter cycle intervals. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：138 / 143

页数：6

共 7 条

[1] CONTRACTION-EXCITATION FEEDBACK IN THE ATRIA - A CAUSE OF CHANGES IN REFRACTORINESS [J].