Abstract 18586: Mitral Peak A Wave Velocity Immediate After Radiofrequency Catheter Ablation to Predict Atrial Fibrillation Recurrence
Introductions: Radiofrequency catheter ablation (RFCA) has been used to treat patients with atrial fibrillation (AF), and AF recurrence after ablation is an issue of concern. Measuring echocardiographic parameters one day following RFCA, including mitral peak A wave velocity, is of interest to determine the risk of recurrent AF.
Methods: During the period of January 2013 and January 2015, we enrolled 68 patients who underwent RFCA and received serial echocardiographic measurements before RFCA and 24 hours after RFCA, retrospectively. AF recurrence, defined as any documented atrial tachyarrhythmias lasting > 30 seconds after 12 weeks following RFCA, was evaluated for one-year follow up.
Results: AF recurrence after 12 weeks was 29.4%. Peak A wave velocities were significantly lower one day after following RFCA in patients with AF recurrence compared to those with sinus rhythm (0.38±0.14 vs 0.50±0.17m/sec, p=0.009). Left atrial volume index (LAVI) and mitral peak E wave velocity were significantly increased in patients with AF recurrence (35±8 vs 29±8ml/m2, p=0.011 for LAVI; 0.83±0.16 vs 0.74±0.15 m/s, p=0.036 for E wave velocity). In multiple logistic regression analysis, peak A wave velocity remained as the only independent predictor of AF recurrence (exp(β) = 0.006, 95% CI = 0.000075-0.416, p = 0.018).
Conclusions: Measurement of mitral peak A wave velocity one day following RFCA has clinical importance in predicting AF recurrence.
Author Disclosures: J. Nam: None. B. Kim: None. K. Choi: None. H. Park: None. C. Lee: None. J. Son: None. U. Kim: None. J. Park: None. D. Shin: None. Y. Kim: None. H. Kim: None. J. Cho: None. S. Kang: None. J. Choi: None.
- © 2016 by American Heart Association, Inc.