Defibrillation threshold of internal cardioversion prior to ablation predicts atrial fibrillation recurrence.

ABSTRACT:

Background

Many studies have reported the predictors of atrial fibrillation (AF) recurrence after persistent AF (peAF) ablation. However, the correlation between the atrial defibrillation threshold (DFT) for internal cardioversion (IC) and AF recurrence rate is unknown. Here we investigated the relationship between the DFT prior to catheter ablation for peAF and AF recurrence.

Hypothesis

DFT prior to ablation was the predictive factor for AF recurrence after peAF ablation.

Methods

From June 2016 to May 2019, we enrolled 82 consecutive patients (mean age, 65.0 ± 12.4 years), including 45 with peAF and 37 with long-standing peAF, at Hamamatsu Medical Center. To assess the DFT, we performed IC with gradually increasing energy prior to radiofrequency application.

Resul

SUBMITTER: Sawasaki K 

PROVIDER: S-EPMC8364735 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature