AF = atrial fibrillation, AICD = automatic implantable cardioverter defibrillator, ATA = atrial tachyarrhythmia, CHF = congestive heart failure, HF = heart failure, IQR = interquartile range, LA = left atrium, LVEF = left ventricular ejection fraction, MI = myocardial infarction, NYHA = New York Heart Association, SD = standard deviation.

*Two-way t-test with Pooled variances

† Chi-squared test

‡ Two-sided Fisher’s Exact test

§ Mann-Whitney U test, two-sided normal approximation

¶ 2 patients had ICDs (for non-ischemic cardiomyopathy and neurocardiogenic syncope, respectively), 14 had pacemakers only, and 1 had no available data on device type.

Table 3: Operative Characteristics. For patients that had follow-up of at least 6 months or longer postoperatively, operative characteristics were compared across postoperative rhythm outcomes. There were no significant differences between groups by freedom from versus recurrence of ATAs for any of these variables (alpha = 0.05).