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Mitral Isthmus Conduction Delay After Pulsed Field Ablation of a Persistent Left Superior Vena Cava
Hiroshi Oe1, Yousaku Okubo1, Sho Okamura1
1Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan.
Abstract:
A persistent left superior vena cava (PLSVC) can contribute to atrial fibrillation (AF) and it often requires complex ablation because of multiple electrical connections with the left atrium. An 86-year-old woman underwent pulsed field ablation (PFA) for pulmonary vein and PLSVC isolation. After successful isolation without causing either phrenic nerve injury or coronary spasm, postprocedural remapping revealed a newly formed low-voltage area with conduction delay in the adjacent mitral isthmus. No atrial tachyarrhythmia recurrence was observed during the one-year follow-up. This case suggests that careful remapping may be warranted after PLSVC ablation using PFA.
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