Effect of Left Ventricular Conduction Delay on All-cause and Cardiovascular Mortality (from the PRECISION Trial)

The prognosis associated with prolonged intra-ventricular conduction on electrocardiogram (ECG) remains uncertain. We aimed to compare clinical outcomes of narrow versus prolonged intra-ventricular conduction on ECG stratified by QRS morphology and cardiovascular disease (CVD) status. A post-hoc analysis was performed of the randomized-control PRECISION trial. Patients with centrally-adjudicated, non-paced baseline ECGs were included. QRS duration was classified narrow ( ≤100 ms) versus prolonged (>100 ms) with additional categorization into left (LBBB) or right (RBBB) bundle branch block or non-specific intra-ventricular conduction delay (IVCD).

Source: The American Journal of Cardiology - July 14, 2019 Category: Cardiology Authors: Erich L. Kiehl, Venu Menon, Kyle T. Mandsager, Katherine E. Wolski, Lisa Wisniewski, Steven E. Nissen, A. Michael Lincoff, Jeffrey S. Borer, Thomas F. L üscher, Daniel J. Cantillon Source Type: research