Table 2.

Operative and perfusion data

Variable	Percent or mean, SD (Median, range) (n = 964)
Priority of surgery
Elective	546 (56.6%)
Urgent	348 (36.1%)
Emergent	63 (6.5%)
Emergent-salvage	7 (0.7%)
Redo surgery	14 (1.5%)
Number of vessels bypassed	2.7 ± 0.8 (3, 1–5)
Usage of arterial grafts
Left internal mammary artery	938 (97%)
Right internal mammary artery	267 (28%)
Radial artery	125 (13%)
Cardiopulmonary bypass time (min)	95 ± 31 (93, 19–309)
Aortic cross-clamp time (min)	64 ± 21 (63, 12–169)
Lowest systemic temperature (°C)	35 ± 12 (35, 26–37)
Total heparin dose (mg/Kg)	1.9 ± 1.0 (1.7, 0.1-8.6)
Total protamine dose (mg/Kg)	1.0 ± 0.5 (0.9, 0–5.4)
Highest ACT during CPB (sec)	360 ± 326 (335, 130–999)
Lowest ACT during CPB (sec)	273 ± 42 (264, 139–524)