Individual and multivariable analysis of the impact of postoperative atrial fibrillation on survival in the whole cohort and in patients with aortic or mitral-valve surgery
| Whole cohort, n=2986 | Patients undergoing aortic-valve replacement, n=2287 | Patients undergoing mitral-valve surgery, n=699 | ||||
| HR (95% CI) | p Value | HR (95% CI) | p Value | HR (95% CI) | p Value | |
| Individual analysis | 1.41 (1.21 to 1.63) | <0.001 | 1.53 (1.30 to 1.80) | <0.001 | 1.17 (0.81 to 1.68) | 0.40 |
| Model 1: adjusted on age, gender and the type of surgical procedure | 1.18 (1.01 to 1.37) | 0.04 | 1.23 (1.05 to 1.46) | 0.01 | 0.86 (0.59 to 1.25) | 0.43 |
| Model 2: adjusted on age, gender, comorbidities and the type of surgical procedure* | 1.17 (1.00 to 1.38) | 0.05 | 1.22 (1.02 to 1.45) | 0.03 | 0.87 (0.58 to 1.29) | 0.48 |
↵* The Cox model analysis was adjusted for age, sex, diabetes, hypertension, renal failure, chronic obstructive pulmonary disease, previous myocardial infarction, previous stroke, current smoking status, left-ventricular ejection fraction <50% and the type of surgical procedure (concomitant coronary artery bypass grafting, aortic-valve replacement, mitral surgery when applicable).