Ventricular arrhythmias originating from left ventricle posterior papillary muscle:electrocardiographic characteristics and catheter ablation
10.3969/j.issn.1004-8812.2018.04.003
- VernacularTitle:左心室后乳头肌起源室性心律失常:心电图特点和导管消融效果
- Author:
De-Yan YANG
1
;
Peng GAO
;
Hua DENG
;
Kang-An CHENG
;
Tai-Bo CHEN
;
Zhong-Wei CHENG
;
Quan FANG
Author Information
1. 中国医学科学院 北京协和医学院 北京协和医院心内科
- Keywords:
Papillary muscles;
Ventricular arrhythmias;
Ventricular tachycardia;
Premature ventricular contractions;
Radiofrequency catheter ablation
- From:
Chinese Journal of Interventional Cardiology
2018;26(4):198-203
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical characteristics, electrocardiography, electrophysiological features and the eff ectiveness of catheter ablation of ventricular arrhythmias originating from left ventricle posterior papillary muscles. Methods Clinical features and electrocardiography of 16 patients with ventricular arrhythmias arising from left ventricular posterior papillary muscles underwent catheter ablation were retrospectively analyzed. Activation mapping and/or pace mapping were performed to identify the site of origin and transthoracic echocardiography were used to demonstrate ablation catheter position and contact. The immediate success and recurrence rates were evaluated. Results During arrhythmias, QRS wave duration of 16 patients [5 men, mean age (45.0±18.2) years] was (155.1±9.0)ms. The prevalence of R>r' and r
