Abstract
Purpose: The 3rd generation Cryoballoon Advance Short-tip (CB-ST) has been designed with a 40% shortened tip length compared with the former second generation CB Advance device (CB-A). Ideally, a shorter tip should permit an improved visualisation of real-time recordings in the pulmonary vein (PV) due to a more proximal positioning of the inner lumen mapping catheter. We sought to compare the incidence of visualisation of real-time recordings in patients having undergone ablation with the CB-ST with patients having received CB-A ablation. Methods: All patients having undergone CB ablation using CB-ST technology and the last 500 consecutive patients having undergone CB-A ablation were analysed. Exclusion criteria were presence of an intracavitary thrombus, uncontrolled heart failure, moderate or severe valvular disease and contraindications to general anesthesia. Conclusion: The rate of visualisation of real-time recordings is significantly higher during 3rd generation CB-ST ablation if compared to the second generation CB-A device. Real-time recordings can be visualized in approximately 85.7% of veins with this novel cryoballoon.
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