Theo Lankveld1, Stef Zeemering1, Daniel Scherr1, Pawel Kuklik1, Boris A Hoffmann1, Stephan Willems1, Burkert Pieske1, Michel Haïssaguerre1, Pierre Jaïs1, Harry J Crijns1, Ulrich Schotten2. 1. From the Departments of Cardiology (T.L., H.J.C.) and Physiology (T.L., S.Z., P.K., U.S.), Maastricht University Medical Centre, Maastricht, the Netherlands; Division of Cardiology, Department of Medicine, Medical University of Graz, Graz, Austria (D.S., B.P.); Department Cardiology-Electrophysiology, University Heart Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.K., B.A.H., S.W.); and Department of Cardiology, Hôpital Cardiologique du Haut Lévêque, Université Bordeaux, IHU LIRYC ANR-10-IAHU-04, Bordeaux, France (M.H., P.J.). 2. From the Departments of Cardiology (T.L., H.J.C.) and Physiology (T.L., S.Z., P.K., U.S.), Maastricht University Medical Centre, Maastricht, the Netherlands; Division of Cardiology, Department of Medicine, Medical University of Graz, Graz, Austria (D.S., B.P.); Department Cardiology-Electrophysiology, University Heart Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.K., B.A.H., S.W.); and Department of Cardiology, Hôpital Cardiologique du Haut Lévêque, Université Bordeaux, IHU LIRYC ANR-10-IAHU-04, Bordeaux, France (M.H., P.J.). schotten@maastrichtuniversity.nl.
Abstract
BACKGROUND: The success rate of catheter ablation for persistent atrial fibrillation (AF) is still far from satisfactory. Identification of patients who will benefit from ablation is highly desirable. We investigated the predictive value of noninvasive AF complexity parameters derived from standard 12-lead ECGs for AF termination and long-term success of catheter ablation and compared them with clinical predictors. METHODS AND RESULTS: The study included a training (93 patients) and a validation set (81 patients) of patients with persistent AF undergoing stepwise radiofrequency ablation. In the training set AF terminated in 81% during catheter ablation, 77% were in sinus rhythm after 6 years and multiple ablations. ECG-derived complexity parameters were determined from a baseline 10-s 12-lead ECG. Prediction of AF termination was similar using only ECG (cross-validated mean area under the curve [AUC], 0.76±0.15) or only clinical parameters (mean AUC, 0.75±0.16). The combination improved prediction to a mean AUC of 0.79±0.13. Using a combined model of ECG and clinical parameters, sinus rhythm at long-term follow-up could be predicted with a mean AUC of 0.71±0.12. In the validation set AF terminated in 57%, 61% were in sinus rhythm after 4.6 years. The combined models predicted termination with an AUC of 0.70 and sinus rhythm at long-term follow-up with an AUC of 0.61. Overall, fibrillation-wave amplitude provided the best rhythm prediction. CONCLUSIONS: The predictive performance of ECG-derived AF complexity parameters for AF termination and long-term success of catheter ablation in patients with persistent AF is at least as good as known clinical predictive parameters, with fibrillation-wave amplitude as the best predictor.
BACKGROUND: The success rate of catheter ablation for persistent atrial fibrillation (AF) is still far from satisfactory. Identification of patients who will benefit from ablation is highly desirable. We investigated the predictive value of noninvasive AF complexity parameters derived from standard 12-lead ECGs for AF termination and long-term success of catheter ablation and compared them with clinical predictors. METHODS AND RESULTS: The study included a training (93 patients) and a validation set (81 patients) of patients with persistent AF undergoing stepwise radiofrequency ablation. In the training set AF terminated in 81% during catheter ablation, 77% were in sinus rhythm after 6 years and multiple ablations. ECG-derived complexity parameters were determined from a baseline 10-s 12-lead ECG. Prediction of AF termination was similar using only ECG (cross-validated mean area under the curve [AUC], 0.76±0.15) or only clinical parameters (mean AUC, 0.75±0.16). The combination improved prediction to a mean AUC of 0.79±0.13. Using a combined model of ECG and clinical parameters, sinus rhythm at long-term follow-up could be predicted with a mean AUC of 0.71±0.12. In the validation set AF terminated in 57%, 61% were in sinus rhythm after 4.6 years. The combined models predicted termination with an AUC of 0.70 and sinus rhythm at long-term follow-up with an AUC of 0.61. Overall, fibrillation-wave amplitude provided the best rhythm prediction. CONCLUSIONS: The predictive performance of ECG-derived AF complexity parameters for AF termination and long-term success of catheter ablation in patients with persistent AF is at least as good as known clinical predictive parameters, with fibrillation-wave amplitude as the best predictor.
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