Table 2. Predictor of 30-day mortality in univariate and multivariate analysis.

Baseline variable	Univariate P value	Stepwise multivariate odds ratio (95% CI)	P value
Age at surgery	<0.001	1.12 (1.02-1.23)	0.016
Female gender	0.016	3.54 (1.19-10.52)	0.023
No preoperative beta blocker	0.029	0.58 (0.18-1.9)	0.371
No preoperative diuretic	0.025	0.91 (0.3-2.8)	0.872
Diabetes	<0.001	0.81 (0.08-8.5)	0.86
Arterial hypertension	0.009	1.11 (0.28-4.45)	0.886
Urgent operation	0.003	2.69 (0.72-10.05)	0.141
Preoperative PCI	<0.001	1.68 (0.15-18.53)	0.67
Preoperative MI	<0.001	7.87 (1.82-34.07)	0.006
Preoperative stroke	<0.001	13.76 (2.93-64.69)	0.001
Preoperative cardiogenic shock	<0.001	0.27 (0.06-1.31)	0.104
Preoperative liver failures	0.025	10.28 (1.57-67.17)	0.015
Peripheral vascular disease	0.006	0.74 (0.21-2.6)	0.643
Preoperative dialysis	0.004	3.22 (0.23-44.48)	0.383
Left ventricular function <30%	0.035	1.89 (0.41-8.8)	0.419
Preoperative pacemaker	0.039	1.83 (0.13-24.67)	0.652
Preoperative defibrillator	0.029	0.04 (1.0-3.2)	0.972
Surgery time	0.001	1.01 (1.00-1.02)	0.002

PCI, percutaneous coronary intervention; MI, myocardial infarction.