Table 2.

Risk factors causing mortality

Variables	P
Creatinine	0.017
Peripheral vascular disease	0.017
Pulmonary artery hypertension	<0.0001
Ejection fraction<30%	0.001
Low cardiac output	<0.0001
Preoperative IABP	<0.0001
Types of operation	0.001

IABP: Intra-aortic balloon pump