Table 2. The causes and cause-specific frequency of major complications.

	All cases
	N = 99
Complications	N (%)
Red cell transfusion > 4U within 72 hr after operation	7 (7.1)
Deep venous thrombosis	1 (1.0)
Ventilator use > 48 hr	11 (11.1)
Pneumonia	7 (7.1)
Stroke	4 (4.0)
Wound disruption	3 (3.0)
Deep or organ-space surgical site infection	4 (4.0)
Sepsis	6 (6.1)
Systemic inflammatory response syndrome	3 (3.0)
Death	0 (0)