QRS duration in evaluating ventricular dyssynchrony in patients with chronic systolic heart failure
- VernacularTitle:QRS时限评价慢性收缩性心力衰竭患者心脏机械收缩不同步
- Author:
Yanping GUI
;
Dening LIAO
;
Jiayou ZHANG
- Publication Type:Journal Article
- Keywords:
QRS duration;
systolic heart failure;
dyssynchrony;
echocardiography
- From:
Academic Journal of Second Military Medical University
1982;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
135 ms in selecting patients for cardiac resynchronization therapy(CRT).Methods Forty-five patients with SHF were randomly divided into two groups according to QRS width: Group 1(QRS width 135 ms could finely predict the presence of interventricular dyssynchrony,with a sensitivity of 80% and a specificity of 87.5%;while the same cutoff value to predict intraventricular dyssynchrony only yielded a sensitivity of 44.1% and specificity of 73.6%.Conclusion Intraventricular dyssynchrony and(or) interventricular dyssynchrony has a high prevalence in patients with SHF.A QRS duration cutoff value higher 135 ms can well evaluate the cardiac mechanical dyssynchrony in clinical practice,which may be of value for optimizing selection of CRT candidates and reducing the nonresponders.
