title: Relation between abnormal ventricular impulse conduction and heart failure.
abstract: Ventricular pacing and left bundle branch block (LBBB) are two of the most common causes of asynchronous electrical activation of the ventricles. The sequence of activation is an important determinant of cardiac pump function. The sequence of activation during LBBB and during pacing at the conventional pacing site, the RV apex, is similar. In this article the literature on the effect of RV pacing and LBBB on regional and global LV pump function, on long-term adaptations (remodeling) and on their possible contribution to the development of heart failure is discussed. Evidence is increasing that asynchronous electrical activation contributes significantly to the development of heart failure.
authors: Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht, the Netherlands.
authors: Kevin
authors: K
authors: Vernooy
authors: Xander A A M
authors: XA
authors: Verbeek
authors: Maaike
authors: M
authors: Peschar
authors: Frits W
authors: FW
authors: Prinzen
mesh_terms: D000818:Animals; D002037:Bundle-Branch Block / Q000150:complications*; D006329:Heart Conduction System / Q000503:physiopathology*; D006333:Heart Failure / Q000209:etiology* / Q000503:physiopathology*; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D018497:Ventricular Dysfunction, Right / Q000150:complications / Q000503:physiopathology