Table 1: The preoperative characteristics of the patients.

Ratio (%)

Male6075.94
Female1924.06
Age (yr)61.5 9.6
Timing
 Elective7088.6
 Emergency911.4
Recent MI1113.92
LVEF
 40%–60%79100
NYHA class
 I56.3
 II1822.78
 III2430.37
 IV3240.50
CAD
 1 vessel56.3
 2 vessel2227.84
 3 vessel4455.69
Left main CAD810.12
Diabetes1417.72
Hypertension3544.30
PVD67.59

Abbreviations: LVEF: left ventricular ejection fraction; NYHA: New York Heart Association; CAD: coronary artery disease; PVD: peripheral vascular disease.