Balloon Anchor Technique for Cryoballoon Ablation in Challenging Right Inferior Pulmonary Veins

Cryoballoon ablation is an established therapy for atrial fibrillation (AF); however, isolation of the right inferior pulmonary vein (RIPV) remains technically challenging due to unfavorable anatomy and difficulty achieving stable balloon-tissue contact. We describe a novel adaptation of the Balloon Anchor Technique, originally developed for complex percutaneous coronary interventions, to facilitate cryoballoon ablation in anatomically challenging RIPVs.

In this approach, a coronary balloon is positioned and inflated within a distal branch of the RIPV to provide anchoring support, enabling stable coaxial alignment and complete pulmonary vein occlusion. The technique was applied in 25 patients in whom standard techniques failed to achieve adequate RIPV occlusion. Complete RIPV isolation was successfully achieved in all cases without procedural complications. The anchor balloon improved catheter stability, facilitated effective occlusion, and reduced the need for repeated repositioning.

The Balloon Anchor Technique is a simple, reproducible, and safe adjunct to cryoballoon ablation that enables reliable RIPV isolation in patients with challenging pulmonary vein anatomy. This strategy may broaden the applicability of cryoballoon ablation and represents a valuable option when conventional techniques are insufficient, with potential implications for other energy-based ablation technologies.