Real-world safety of catheter ablation for atrial fibrillation with contact force or cryoballoon ablation

Andrea Natale, Sanghamitra Mohanty, Laura Goldstein, Tara Gomez, Tina D Hunter, Andrea Natale, Sanghamitra Mohanty, Laura Goldstein, Tara Gomez, Tina D Hunter

Abstract

Purpose: Real-world data can help medical administrators, physicians, and payers make evidence-based decisions regarding treatment choices. The objective of this study was to compare real-world safety outcomes with the latest catheter technologies used for the treatment of atrial fibrillation (AF).

Methods: The Vizient Health Systems database, a large US hospital database, was used to compare acute complications in AF ablation with the contact force sensing THERMOCOOL SMARTTOUCH® Catheter or the THERMOCOOL SMARTTOUCH® SF Catheter (ST) versus the second-generation Arctic Front Advance™ Cryoablation Catheter (CB2) between September 2015 and June 2017. The primary outcome was a composite safety endpoint of acute ablation-related complications defined via ICD-10 diagnosis and procedure codes, including tamponade and other pericardial events, respiratory complications, stroke, cerebral or pre-cerebral occlusion/stenosis without infarction, vascular access complications, hemorrhage, phrenic nerve injury, myocardial infarction, and pulmonary embolism.

Results: In total, 1473 ablations met all inclusion criteria (407 ST, 1066 CB2). Ablations for paroxysmal AF (PAF) had a lower complication rate than ablations for persistent AF (PsAF) (6.1% vs. 7.3%), as did ablations with ST compared with CB2 within each AF type (PAF 6.0% vs. 6.1%, PsAF 6.3% vs. 7.8%). Neither ablation catheter nor AF type was statistically significant after controlling for site volume, patient age, and comorbid conditions (ST vs. CB2: OR 0.86, p = 0.5544; PsAF vs. PAF: OR 1.08, p = 0.7376).

Conclusion: Acute ablation-related complication rates were low and were not significantly associated with catheter technology. Increased risk of complication was attributable to low-volume sites and baseline patient characteristics.

Keywords: Atrial fibrillation; Catheter ablation; Contact force; Cryoablation; Radiofrequency ablation; Safety.

Conflict of interest statement

A Natale is a paid consultant for Biosense Webster, Inc., Medtronic, Biotronik, St. Jude/Abbott, Boston Scientific, and Baylis. Neither honoraria nor payments were made for authorship. S Mohanty has no disclosures. L Goldstein and T Gomez are employees of Biosense Webster, Inc., a Johnson and Johnson company. TD Hunter is an employee of CTI Clinical Trial and Consulting Services, which is a consultant to Biosense Webster, Inc., the study sponsor.

Figures

Fig. 1
Fig. 1
Acute complications across high- and low-volume centers. A total of 5.8% of patients ablated at high-volume sites had an acute procedure-related complication versus 12.2% of patients ablated at low-volume sites (p = 0.0008). Complication rates did not vary significantly by catheter cohort within the high-volume sites (5.9% CB2 vs. 5.3% ST, p = 0.6904) or within the low-volume sites (13.4% CB2 vs. 10.1% ST, p = 0.5056)

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Source: PubMed

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