Determinants and clinical implications of discharge timing after catheter ablation for atrial tachycardia

Abstract Aims Early discharge after electrophysiological procedures has gained increasing attention. However, definition of patient- and procedure-related prerequisites for successful and safe discharge strategies after atrial tachycardia (AT) ablation remains unknown. We therefore evaluated patient characteristics, procedural features, and outcomes according to index length of stay (LOS) following AT ablation. Methods and results The multicenter observational SATELLITE registry enrolled consecutive patients undergoing AT rhythm control. Patients were stratified by LOS (≤1, 2 and >2 nights) after catheter ablation. Among 670 patients (67 [IQR 56–75] years, 54.9% male), LOS was ≤1 night in 13.9%, 2 nights in 41.9% and >2 nights in 44.2%. LOS was only modestly predictable from clinical characteristics including age, sex, atrial fibrillation and prior atrial ablation (AUC 0.73). Discrimination improved after inclusion of procedural variables and early post-procedural events (AUC 0.77; P =0.0300), consistent with an increase in left atrial procedures (26.5% vs. 76.0% vs. 80.8%; P