Pacing Algorithms to Minimize Right Ventricular Pacing and Sensors to Warn for Worsening Heart Failure
DOI:
https://doi.org/10.2015/hc.v3i1%20sup.149Abstract
Several clinical studies in patients with VVI or dual-chamber pacemakers have demonstrated that right ventricular apical pacing may adversely affect myocardial function and lead to an increased number of hospital admissions for congestive heart failure. Endocardial catheter mapping studies have unequivocally demonstrated that right ventricular (RV) pacing mimics the endocardial activation patterns of left bundle branch block (LBBB). Furthermore, the effect of RV pacing on left ventricular activation patterns and times are similar to that observed during LBBB. Right ventricular apical pacing results in asynchronous ventricular activation and delayed left ventricular (LV) activation time due to slow initial propagation of the electrical wavefront through ventricular myocardium rather than through the His-Purkinje system.Downloads
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