Immediate Post-Procedural 12-Lead Electrocardiography as Predictor of Late Conduction Defects After Transcatheter Aortic Valve Replacement

Abstract Objectives The aim of this study was to use a 12-lead electrocardiogram obtained immediately post–transcatheter aortic valve replacement (TAVR) to identify predictors of late high-degree conduction defect (HD-CD) within 30 days after TAVR. Background There are limited data on risk factors for the development of late HD-CD and the need to retain the temporary pacemaker after TAVR. Methods A single-center study was conducted including 467 consecutive patients, without pre-procedural pacemakers, undergoing TAVR. Results Self-expandable, mechanical, or balloon-expandable heart valves were implanted in 328 (70%), 61 (13%), and 78 (17%) patients, respectively. For patients in sinus rhythm without right bundle branch block, late HD-CD developed in 0 of 70 patients (0%; 95% confidence interval [CI]: 0% to 5.1%) with PR interval  Conclusions On the basis of immediate post-TAVR 12-lead electrocardiography, removing the temporary pacemaker immediately following TAVR is potentially safe in patients without right bundle branch block who are: 1) in sinus rhythm with PR interval