First data on cardiac mapping and outcome of pulmonary vein isolation using a novel ablation catheter with tip mini electrodes

International Journal of Cardiology
Lena LoehrAlexander Wutzler

Abstract

Pulmonary vein isolation (PVI) is a standard treatment of atrial fibrillation (AF). AF recurrence after PVI occurs in a substantial number of cases. A novel ablation catheter equipped with mini-electrodes (ME) may facilitate PVI. Our study evaluated outcome after PVI with the ME catheter compared to a standard catheter. Patients undergoing PVI with the ME catheter were compared to a control group ablated with a standard contact force sensing catheter. Freedom of AF after 12 months was the study endpoint. Additionally, low voltage areas (LVA) <0.5 mV were identified with a circular mapping catheter (CMC) and the ablation catheter in each group. LVA were compared between the maps obtained with the CMC and the ME or standard catheter, respectively. A total of 110 patients underwent PVI with ME catheter (n = 59) or the standard catheter (n = 51). Procedure duration (117.4 ± 43 vs. 103.1 ± 32.8 min, p = 0.15), radiation dose (1135.6 ± 1125.7 vs. 1078.8 ± 951.4 μGy/m2, p = 0.91), incidence of complications and 12-month success rate (64.4 vs 72.5%, p = 0.36) were not significantly different between the groups. LVA were significantly smaller when obtained with the standard catheter compared to the CMC (14 ± 13 vs. 58.5 ± 22.1 cm2, p < ...Continue Reading

Citations

Nov 13, 2019·European Heart Journal·Christian Sohns, Nassir F Marrouche
May 12, 2019·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Iain SimSteven E Williams

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