Discover the often-overlooked factor compromising the success of atrial fibrillation treatments: the surprisingly high incidence of cryoballoon dislodgement during pulmonary vein isolation procedures.
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Incidence of cryoballoon expansion dislodgement during pulmonary vein isolation-an underappreciated frequent cause of incomplete isolation.
Liao et al., Pacing Clin Electrophysiol 2023
DOI: 10.1111/pace.14910
Summary of Cryoballoon Ablation Study for Atrial Fibrillation
New Information: The study investigates the incidence of cryoballoon dislodgement during cryoablation for atrial fibrillation, a potential issue that can lead to incomplete pulmonary vein isolation (PVI).
Importance: Ensuring the stability of cryoballoon position is crucial for the success of PVI. Dislodgement can result in peri-balloon leaks and incomplete ablation, which may affect the procedure’s efficacy.
Contribution to Literature: This study provides quantitative data on the frequency of cryoballoon dislodgement using two different imaging modalities, intracardiac echocardiography (ICE) and dielectric imaging-based occlusion tool (DIOT).
Results: Out of 105 cryoablation applications on 57 veins, ICE detected peri-balloon leaks in 22.7% (5/22 applications), while DIOT detected leaks in 32% (8/25 applications). The consistency between the two modalities was 86.7% in assessing PV occlusion.
Conclusion: The study reveals that expansion dislodgement of the cryoballoon occurs in a significant proportion of applications, highlighting the need for continuous monitoring during cryoablation procedures.