Impact of Baseline Right Bundle Branch Block on Outcomes after Pulmonary Vein Isolation in Patients with Atrial Fibrillation

Right bundle branch block (RBBB) is one of the most frequent alterations of the electrocardiogram. Several studies have shown that RBBB is a risk factor of cardiovascular diseases. However, the clinical outcomes after pulmonary vein isolation (PVI) in patients with RBBB remain unclear. We enrolled consecutive atrial fibrillation (AF) patients who underwent PVI from the Osaka Rosai Atrial Fibrillation (ORAF) registry. We excluded patients with other wide QRS morphologies (left bundle branch block, ventricular pacing, and unclassified intraventricular conduction disturbances) and divided them into two groups: RBBB (QRS duration ≥120msec) and No-RBBB (QRS duration
Source: The American Journal of Cardiology - Category: Cardiology Authors: Source Type: research