Abstract 17591: New Methods to Display and Summarize Late Reintervention Outcomes, Follow-Up and Vital Status Information After Surgery for Atrial Fibrillation

Background: There are limited statistical methods to display certain clinically important interventions in patients that undergo catheter ablation (CA) or cardioversion (CV) after surgical ablation of atrial fibrillation (SAAF). Current reporting is limited to yearly or last follow-up summaries and does not convey the outcome dynamics over time. Following a recommendation of the 2012 HRS/EHRA/ECAS Expert Consensus Statement on Catheter and SAAF to develop new robust outcome reporting methods, we propose a comprehensive measure of the overall burden of reintervention after SAAF. Methods: 729 patients (60% males, age 67±12 yrs, follow-up 3.3±1.9 yrs, 92% 1-yr survival) underwent SAAF with or without concomitant cardiac surgery between 04/04 and 12/10. Of them, N=141 patients had a total of R=232 late reinterventions grouped as follows: (a) CAs alone (N=21, R=24), (b) CVs alone (N=87, R=111), (c) at least a CA and a CV (N=33, R=97). As a robust reporting measure, we propose the mean cumulative number MCF(t) ...