Atrial fibrillation laser balloon ablation: Multicenter international study

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Pulmonary vein isolation (PVI) for atrial fibrillation (AF) presents ongoing challenges.
• The visually guided laser balloon (VGLB) is a novel single-shot technology designed to simplify PVI procedures.

Purpose of the Study:

• To evaluate the real-world safety and long-term effectiveness of the third-generation VGLB system.
• To assess VGLB efficacy in treating both paroxysmal and persistent forms of AF.

Main Methods:

• A prospective, multicenter registry involving 427 patients undergoing VGLB-PVI.
• Safety assessment in all patients; primary effectiveness endpoint (12-month freedom from AF) analyzed in 392 patients.
• Cox regression models utilized to identify predictors of AF recurrence.

Main Results:

• Acute PVI was successfully achieved in all targeted veins with a favorable safety profile.
• 12-month freedom from AF recurrence off antiarrhythmic drugs was 73.8%, increasing to 77.7% post-learning curve.
• Independent predictors of recurrence included procedures within the learning curve, congestive heart failure, and anatomic variants.

Conclusions:

• Third-generation VGLB ablation is a safe and effective strategy for achieving long-term freedom from AF in a real-world setting.
• Operator experience beyond the initial learning curve is crucial for optimizing VGLB success rates.
• VGLB represents a viable and effective option for PVI.