Cited 60 times since 2015 (9.2 per year) source: Scopus Journal of the American College of Cardiology, Volume 65, Issue 18, 22 4 2015, Pages 1954-1959 Predictive value of programmed ventricular stimulation after catheter ablation of post-infarction ventricular tachycardia. Yokokawa M, Kim HM, Baser K, Stevenson W, Nagashima K, Della Bella P, Vergara P, Hindricks G, Arya A, Zeppenfeld K, de Riva Silva M, Daoud EG, Kumar S, Kuck KH, Tilz R, Mathew S, Ghanbari H, Latchamsetty R, Morady F, Bogun FM
BackgroundA recent meta-analysis demonstrated a survival benefit in post-infarction patients whose ventricular tachycardia (VT) was rendered noninducible by catheter ablation. Furthermore, patients with noninducible VT had a lower VT recurrence rate than did patients whose VT remained inducible after ablation.
ObjectivesThe purpose of this multicenter cohort study was to assess whether noninducibility after VT ablation is independently associated with improved survival.
MethodsData from 1,064 patients who underwent VT ablation for post-infarction VT at seven international centers were analyzed. The ablation procedure was considered successful if no VT was inducible at the end of the procedure and unsuccessful if VT remained inducible or if programmed stimulation was not performed at the end of the ablation.
ResultsMedian follow-up time was 633 days. Noninducibility was independently associated with lower mortality (adjusted hazard ratio
0.65; 95% confidence interval
0.53 to 0.79; p<0.001). Atrial fibrillation, diabetes, and age were other independent predictors of higher mortality. Ablation of only the clinical VT in patients who also had inducible, nonclinical VTs was not associated with improved survival.