Prevalence and determinants of left ventricular systolic dyssynchrony in patients with normal ejection fraction received rightn ventricular apical pacing: a real-time three-dimensional echocardiographic study

摘要

Aims Right ventricular apical (RVA) pacing may induce mechanical dyssynchrony. However, its impact on patients with normal ejection fraction (EF) is not fully understood. This study examined the prevalence and predictors of RVA pacing-induced systolic dyssynchrony by real-time three-dimensional echocardiography (RT3DE), and evaluated its impact on left ventricular (LV) function.