Abstract 17736: Programming of Antitachycardia Pacing Reduces the Overall Shock Delivery for Ventricular as Well as Supraventricular Tachyarrhythmias in ICD Patients - Results of The ATPonfastVT - Substudy
The ATPonFastVT-study evaluated the time to the first shock (Sx) for FVT in a prospective, randomized design. The current sub-analysis investigated the overall ICD Sx delivery for stored arrhythmic episodes and the influence of the indication (primary vs secondary prevention, PP vs SP).
Methods: 462 patients were included in the study, 212 were assigned to the ATP, 250 to the Sx group. During a mean follow up of 777±478 days, ICD Sxs for any reason occurred in 13.3% of all patients (ATP: 10.8 % vs 16.6 % in the shock group, p<0.001). Moreover, the influence of PP vs SP was analyzed in terms of overall Sx delivery.
Results: Sx for SVT occurred in 8.2% (ATP) vs 11.1 % in the Sx group (p=0.042). The table illustrates the Sx delivery for VA episodes. The figure displays the difference between PP and SP concerning time to the first ICD Sx.
Conclusions: The current sub-study of the ATPonFastVT-Study emphasizes the need to program ATP in ICD patients. ATP programming is able to reduce unnecessary Sxs for SVT andVT/FVT and, consequently, reflects a mandatory programming feature for all ICD patients.
- © 2013 by American Heart Association, Inc.