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Long-term outcomes 2 years of atrial fibrillation ablation using a multi-electrode ablation catheter in patients with paroxysmal atrial fibrillation



Long-term outcomes 2 years of atrial fibrillation ablation using a multi-electrode ablation catheter in patients with paroxysmal atrial fibrillation







Catheter ablation for paroxysmal atrial fibrillation (PAF) is an effective treatment. Favourable outcomes at 6 12 months post-ablation have been reported using the multi-electrode catheter pulmonary vein ablation catheter (PVAC) but little is known about longer term outcomes. There are also limited data on quality of life (QoL) post-atrial fibrillation (AF) ablation beyond 2 years of follow-up. Two hundred three consecutive patients (77 % male, mean age 57.7? ?11 years) who had a PAF ablation were included. Patients underwent conventional pulmonary vein isolation (PVI) (n?=?128) or PVAC ablation (n?=?75). Patients' symptoms were scored at baseline, at clinic follow-up and on questionnaire follow-up using the validated Canadian Cardiovascular Society Severity of AF (CCS-SAF) scale. The AF Effect on QualiTy of life (AFEQT) questionnaire was used on questionnaire follow-up. Mean questionnaire follow-up was 854? ?176 days with 74 % response rate. The majority of patients (91.6 % overall) were highly symptomatic at baseline with CCS-SAF class 3 or 4 symptoms. CCS-SAF class on follow-up questionnaire decreased significantly from baseline for both groups (mean 1.69? ?1.7 for PVAC and 1.45? ?1.5 for PVI, p?=?0.001 and p?<0.001, respectively) with no difference between groups (p?=?0.52) and the majority being class 0 or 1 (59.9 % overall). Mean AFEQT questionnaire scores were similar between both groups (78.1? ?25 vs. 82? ?23, p?=?0.35). Total procedure time was significantly shorter in the PVAC group (135? ?54 vs. 178? ?43 min, p?<0.001). There was a comparable and significant improvement in QoL post-ablation in patients who underwent ablation using PVAC catheter and conventional techniques.

Accession: 036636837

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