PR间期与交界区

PR Interval and Junctional Zone.

作者信息

Bagliani Giuseppe, Della Rocca Domenico Giovanni, Di Biase Luigi, Padeletti Luigi

机构信息

Arrhythmology Unit, Cardiology Department, Foligno General Hospital, Via Massimo Arcamone, 06034 Foligno (PG), Italy; Cardiovascular Diseases Department, University of Perugia, Piazza Menghini 1, 06129 Perugia Italy.

Department of Cardiovascular Medicine, University of Rome Tor Vergata, Rome, Italy; Texas Cardiac Arrhythmia Institute, St. David's Medical Center, 3000 N IH 35, Ste 700, Austin, TX 78705, USA.

出版信息

Card Electrophysiol Clin. 2017 Sep;9(3):411-433. doi: 10.1016/j.ccep.2017.05.003.

DOI:10.1016/j.ccep.2017.05.003

PMID:28838548

Abstract

The atrioventricular junction is a pivotal component of the cardiac conduction system, a key electrical relay site between the atria and the ventricles. The sophisticated functions carried out by the atrioventricular junction are possible for the presence of a complex apparatus made of specialized anatomic structures, cells with specific ion-channel expression, a well-organized spatial distribution of intercellular junctions (connexins), cells with intrinsic automatism, and a rich autonomic innervation. This article reviews the main anatomic and electrophysiologic features of the atrioventricular junction, with a focus on cardiac preexcitation.

摘要

房室交界区是心脏传导系统的关键组成部分，是心房和心室之间关键的电中继部位。房室交界区能够执行复杂功能，是因为存在由特殊解剖结构、具有特定离子通道表达的细胞、组织有序的细胞间连接（连接蛋白）空间分布、具有固有自律性的细胞以及丰富的自主神经支配所构成的复杂装置。本文综述了房室交界区的主要解剖和电生理特征，重点关注心脏预激。