Effect of PR interval prolongation on long-term outcomes in patients with left bundle branch block vs non-left bundle branch block morphologies undergoing cardiac resynchronization therapy.

Abstract

BACKGROUND Although the influence of QRS duration (QRSd) and/or bundle branch block morphology on outcomes of cardiac resynchronization therapy (CRT) have been well studied, the effect of PR interval remains uncertain. OBJECTIVE The purpose of this study was to evaluate the impact of PR prolongation (PRp) before CRT on long-term outcomes, specifically… (More)
DOI: 10.1016/j.hrthm.2017.05.028

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