Catheter ablation of atrial fibrillation results in significant QTc prolongation in the postoperative period.

ABSTRACT:

Background

The corrected QT interval (QTc) is a measure of ventricular repolarization time, and a prolonged QTc increases risk for malignant ventricular arrhythmias. Pulmonary vein isolation (PVI) may increase QTc but its effects have not been well studied.

Objective

Determine the incidence, risk factors, and outcomes of patients presenting for PVI in sinus and atrial fibrillation with postoperative QTc prolongation in a large cohort.

Methods

We performed a single-center retrospective study of consecutive atrial fibrillation ablations. QTc durations using Bazett correction were obtained from electrocardiograms at different postoperative intervals and compared to preoperative QTc. We studied clinical outcomes including clinically significant ventricular arrhythmia and

SUBMITTER: Nguyen DD 

PROVIDER: S-EPMC8505209 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature