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- Title
Pulmonary Vein Isolation to Reduce Future Risk of Atrial Fibrillation in Patients Undergoing Typical Flutter Ablation: Results from a Randomized Pilot Study (REDUCE AF).
- Authors
MOHANTY, SANGHAMITRA; NATALE, ANDREA; MOHANTY, PRASANT; BIASE, LUIGI; TRIVEDI, CHINTAN; SANTANGELI, PASQUALE; BAI, RONG; BURKHARDT, J. DAVID; GALLINGHOUSE, G. JOSEPH; HORTON, RODNEY; SANCHEZ, JAVIER E.; HRANITZKY, PATRICK M.; AL‐AHMAD, AMIN; HAO, STEVEN; HONGO, RICHARD; BEHEIRY, SALWA; PELARGONIO, GEMMA; FORLEO, GIOVANNI; ROSSILLO, ANTONIO; THEMISTOCLAKIS, SAKIS
- Abstract
Benefits of PVI in Patients with Atrial Flutter Background This study examined incidence of AF following cavotricuspid isthmus (CTI) ablation alone or CTI plus prophylactic pulmonary vein isolation (PVI) in patients presenting with isolated atrial flutter (AFL) with no history of AF. Methods and Results We enrolled 216 patients with isolated typical atrial flutter and randomized them to CTI alone (group 1, n = 108, 61.2 ± 9.7 year, 75% male) or CTI+PVI ablation (group 2, n = 108, 62.4 ± 9.3 year, 73% male). Insertible loop recorder (ILR) was implanted in 21 and 19 patients from groups 1 and 2, respectively. Remaining patients were monitored with event recorders, ECG, 7-day Holter. Follow-up period was for 18 ± 6 months. Compared to group 1, group 2 had significantly longer procedural duration (75.9 ± 33 min vs. 161 ± 48 min [P < 0.001]) and fluoroscopy time (15.9 ± 12.3 min vs. 56.4+21 min [P < 0.001]). At the end of follow-up, 65 (60.2%) in group 1 and 77 (71.3%) in group 2 were arrhythmia free off-AAD (log-rank P = 0.044). A subgroup analysis was performed with 55 year age cut-off. In the <55 age group the CTI only population had similar success as in CTI+PVI, (21 of 24 [83.3%] vs. 19 of 22 [86.4%], respectively, log-rank P = 0.74). In the ≥55 group, having CTI+PVI showed significantly higher success compared to CTI only; 45 of 84 (53.6%) were AF/AT free in CTI only group versus 58 of 86 (67.4%) with CTI+PVI (log-rank P = 0.029). Conclusion Prophylactic PVI reduced new-onset AF in patients with lone atrial flutter.
- Subjects
ATRIAL fibrillation prevention; PULMONARY veins; CATHETER ablation; CHI-squared test; CLINICAL trials; CONFIDENCE intervals; MEDICAL cooperation; PREVENTIVE medicine; RESEARCH; STATISTICAL sampling; STATISTICS; SURVIVAL analysis (Biometry); T-test (Statistics); ATRIAL flutter; PILOT projects; DATA analysis; RANDOMIZED controlled trials; TREATMENT effectiveness; PROPORTIONAL hazards models; DATA analysis software; DESCRIPTIVE statistics; KAPLAN-Meier estimator; LOG-rank test; SURGERY
- Publication
Journal of Cardiovascular Electrophysiology, 2015, Vol 26, Issue 8, p819
- ISSN
1045-3873
- Publication type
Article
- DOI
10.1111/jce.12688