房性期前收缩诱发慢-快型房室结内折返性心动过速一例报道  

Slow-fast Atrioventricular Nodal Reentrant Tachycardia Induced by Atrial Premature Contraction: Report of One Case

作　　者：祝丽萍 周厚龙 沈丹 

机构地区：[1]湖南省常德市第二人民医院心血管内科心电图室,415001

出　　处：《中国全科医学》2013年第26期3142-3143,共2页Chinese General Practice

摘　　要：房室结内折返性心动过速是临床常见的快速性心律失常,与房室折返性心动过速统称为室上性心动过速,发病机制是由于房室结内存在传导速度和传导路径不同的双径路。本文患者根据心电图及梯形图对房室结双径路的分析,提示快-慢径路不应期不一致,并在快-慢径路间发生折返,导致慢-快型房室结内折返性心动过速。说明单个房性期前收缩可诱发房室结内折返性心动过速,伴发心房期前收缩复合征。笔者旨在通过分析该病例临床资料对房室结内折返性心动过速发病机制加以复习,使临床医师加强对本病的认识。Atrioventricular nodal reentry tachycardia （AVNRT） , a common clinical arrhythmia, is called by a joint name with atrioventricular reentrant tachycardia （AVRT） as supraventricular tachycardia. Its pathogenesis is due to different du- al pathways of conduction velocity and conduction path in atrioventricular node. In this case, ECG and ladder diagram analysis of dual pathways suggested fast - slow pathways were in refractory period and disaccording and reentranee occurred in fast - slow pathway, leading to slow - fast AVNRT. It showed that single atrial premature beat induced AVNRT complicated by atrial prema- ture complexes. This paper reviews the pathogenesis of AVNRT of this case to strengthen clinicians understanding of this disease.

关 键 词：心电描记术 心房期前收缩复合征 心动过速 房室结折返性 

分 类 号：R541.71[医药卫生—心血管疾病]