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. 2006 Nov;244(5):758-63.
doi: 10.1097/01.sla.0000219017.78611.49.

Elective colon and rectal surgery differ in risk factors for wound infection: results of prospective surveillance

Tsuyoshi Konishi  1 , Toshiaki Watanabe, Junji Kishimoto, Hirokazu Nagawa
Affiliations

Elective colon and rectal surgery differ in risk factors for wound infection: results of prospective surveillance

Tsuyoshi Konishi et al. Ann Surg. 2006 Nov.

Abstract

Objective: The objective of this study was to clarify the incidence and risk factors for developing incisional surgical site infection (SSI) in both elective colon and rectal surgery.

Summary background data: SSI is a frequent complication after elective colorectal resection. The National Nosocomial Infection Surveillance system surveys all colorectal surgeries together, without differentiating the type of colorectal surgery performed. However, rectal surgery may have a higher risk for SSI, and identifying risk factors that are more specific to each procedure would be more predictive.

Methods: We conducted prospective SSI surveillance of all elective colorectal resections performed by a single surgeon in a single institution from November 2000 to July 2004. The data for colon and rectal surgeries were collected separately. The outcome of interest was incisional SSI. Univariate and multivariate analyses were performed to determine the predictive significance of variables in each type of surgery.

Results: A total of 556 colorectal resections, consisting of 339 colon and 217 rectal surgeries, were admitted to the program. The incisional SSI rates in colon and rectal surgeries were 9.4% and 18.0%, respectively (P = 0.0033). Risk factors for developing incisional SSI in colon surgery were ostomy closure (OR = 7.3) and lack of oral antibiotics (OR = 3.3), while in rectal surgery, risk factors were preoperative steroids (OR = 3.7), preoperative radiation (OR = 2.8), and ostomy creation (OR = 4.9).

Conclusions: Colon and rectal surgeries differ with regard to incidence and risk factors for developing incisional SSI. SSI surveillance for such surgeries should be performed separately, as this should lead to more efficient identification of risk factors and a reduction in SSI.

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