Incisional Surgical Site Infection after Elective Open Surgery for Colorectal Cancer

Table 2

Perioperative/operative variables.

Variable	Total number	Incisional SSI
		%	𝑃 value
Mechanical bowel preparation			0.549
Presence	172	14.0
Absence	52	17.3
Timing of prophylactic antibiotic use			0.773
15–29 minutes before incision	107	14.0
30–50 minutes before incision	117	15.4
Type of procedure			0.688
Right-sided colectomy	38	15.8
Left-sided colectomy	45	20.0
Transverse colectomy	13	23.1
Sigmoid anterior resection	50	12.0
Rectal anterior resection	54	13.0
Abdominoperineal resection	14	14.3
Hartmann's procedure	10	0.0
Type of anastomosis			0.353
Functional end-to-end	93	19.4
Side-to-end	66	10.6
End-to-end	41	14.6
No anastomosis	24	8.3
Additional procedure
Ostomy formation	25	8.0	0.314
Multiple organ resection	34	14.7	0.996
Length of operaion (min)			0.202
<90	121	11.6
90–180	91	19.8
≥180	12	8.3
Wound classification			0.639
II	183	14.2
III	41	17.1
Depth of incisional site (cm)			0.269
<3	131	13.0
≥3	69	18.8
Length of incisional site (cm)			0.098
<20	120	11.7
≥20	79	20.3
Intraoperative hypotension (mmHg)			0.010
SBP < 80	138	19.6
SBP ≥ 80	86	7.0
Estimated blood loss (mL)			0.533
<100	116	13.8
100–400	78	18.0
≥400	30	10.0
Perioperative blood transfusion			0.319
Presence	41	9.8
Absence	183	15.9
Postoperative glucose (g/dL)			0.384
<200	188	13.8
≥200	36	19.4

SBP: systolic blood pressure.