Abstract
Methods Between January 2000 and November 2009, we enrolled 508 consecutive patients (284 females, aged 55 ± 12 years) who underwent the maze procedure with other cardiac operations. The early postoperative AF burden was measured by continuous monitoring of the cardiac rhythm during hospitalization. The post procedural rhythm was checked with a serial electrocardiogram every year. The mean follow up duration was 58 ± 32 (maximum, 10.4 years) months.
Highlights
It is difficult to evaluate the efficacy of maze procedures because a true atrial fibrillation (AF) burden measurement during follow-up is not yet clinically available
The early postoperative AF burden was correlated with age, AF duration, atrial F wave, and left atrial volume index (Table 1)
On receiver operating characteristic curve analysis, we found that early postoperative AF burden ≥ 0.25 predicted AF-free survival with a sensitivity of 77% and a specificity of 62%
Summary
The aim of this study is to evaluate the usefulness of early postoperative AF burden as a predictor of late AF recurrence after the maze procedure
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