Mobitz Type II Second-Degree Atrioventricular Block with Narrow QRS and Junctional Extrasystoles: What is the Mechanism?

被引：3

作者：

Jimenez-Diaz, Javier ^{[1
]}

Gonzalez-Ferrer, Juan J. ^{[1
]}

Heredia, Giovanna U. ^{[1
]}

Moreno-Planas, Javier ^{[2
]}

机构：

[1] Hosp Gen Univ Ciudad Real, Serv Cardiol, Unidad Arritmias, Ciudad Real 13005, Spain

[2] Hosp Ramon & Cajal, Unidad Arritmias, E-28034 Madrid, Spain

来源：

JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY | 2014年 / 25卷 / 04期

关键词：

junctional extrasystoles; heart block; Mobitz II block; AV block; concealed conduction;

D O I：

10.1111/jce.12321

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Arrhythmia Rounds A 74-year-old man underwent an electrophysiological study because of Mobitz type II second-degree atrioventricular (AV) block with narrow QRS and frequent junctional extrasystoles. During the study, there were very frequent single His bundle depolarizations with multiple coupling intervals that reproduce the ECG findings. In this case, some His bundle extrasystoles result in retrograde concealed conduction and prolonged local refractoriness in the AV node that manifest as block of the next atrial impulse.

引用

页码：447 / 449

页数：3

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