Acute safety of an open-irrigated ablation catheter with 56-hole porous tip for radiofrequency ablation of paroxysmal atrial fibrillation: analysis from 2 observational registry studies

Saumil R Oza, Tina D Hunter, Angelo B Biviano, Gopi Dandamudi, Bengt Herweg, Anshul M Patel, Scott J Pollak, Huijian Wang, Robert S Fishel, Saumil R Oza, Tina D Hunter, Angelo B Biviano, Gopi Dandamudi, Bengt Herweg, Anshul M Patel, Scott J Pollak, Huijian Wang, Robert S Fishel

Abstract

Introduction: This report presents safety data on the use of a new open-irrigation radiofrequency ablation (RFA) catheter with a 56-hole porous tip in 742 patients enrolled in 2 US prospective, multicenter observational registry studies representing real-world use of the catheter.

Methods: This analysis is comprised of patients who underwent RFA of drug-refractory recurrent symptomatic paroxysmal atrial fibrillation (AF). Acute adverse events (AEs) were collected and categorized by seriousness, timing, and relatedness, with 7 days of follow-up data in one study and at least 120 days of data from a 1-year follow-up in the other. Acute serious adverse events (SAEs) that were identified as potentially related to the device and/or procedure were adjudicated by an independent safety committee.

Results: A total of 30 patients (4.0%) in the combined studies experienced an acute SAE related to the device and/or procedure, which was similar in the subset of patients age 65 and over (4.2%). These SAEs included 1.2% cardiac tamponade/perforation, 0.7% pericarditis, 0.5% pulmonary events, and 0.8% vascular access complications. No myocardial infarction, stroke, transient ischemic attack, or atrioesophageal fistulas within 7 days postprocedure were reported. In the study with extended follow-up, 1 pulmonary vein stenosis and 1 esophageal injury were seen beyond 7 days postprocedure (0.2% each). There were no device or procedure related deaths.

Conclusion: Results from 2 large observational studies demonstrated that a new porous tip RFA catheter was safe for the treatment of drug refractory, recurrent, symptomatic paroxysmal AF, including treatment of older patients (≥65 years).

Keywords: acute safety; atrial fibrillation; catheter ablation; complications; thermocool SF catheter.

© 2014 The Authors Journal of Cardiovascular Electrophysiology Published by Wiley Periodicals, Inc.

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Source: PubMed

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