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

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 rela...

Full description

Saved in:
Bibliographic Details
Published in:Clinical cardiology (Mahwah, N.J.) N.J.), 2021-08, Vol.44 (8), p.1169-1176
Main Authors: Sawasaki, Kohei, Inden, Yasuya, Hosoya, Natsuko, Muto, Masahiro, Murohara, Toyoaki
Format: Article
Language:English
Subjects:
Ablation
Ablation (Surgery)
Analysis
Anticoagulants
Anticoagulants (Medicine)
atrial defibrillation threshold
Atrial fibrillation
Cardiac arrhythmia
Cardioversion
catheter ablation
Catheters
Clinical Investigations
Diabetes
Ejection fraction
Electric countershock
Electrocardiography
Laboratories
Medical centers
Medical prognosis
Patients
Peptides
persistent atrial fibrillation
Prognosis
Statistical analysis
Veins & arteries
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. Results Forty‐nine and 33 patients showed DFT values less than or equal to 10 J (group A) and greater than 10 J or unsuccessful defibrillation (group B). During the mean follow‐up duration of 20.5 ± 13.1 months, patients in group B showed significantly higher AF recurrence rates than those in group A after the ablation procedure (p = .017). Multivariate analysis revealed that DFT was the only predictive factor for AF recurrence (odds ratio, 1.07; 95% CI, 1.00–1.13, p = .047). Conclusions The DFT for IC was among the strongest prognostic factors in the peAF ablation procedure.
ISSN:0160-9289
1932-8737
DOI:10.1002/clc.23679