Predictors of surgical site infection after pancreaticoduodenectomy

Wikran Suragul, Narongsak Rungsakulkij, Watoo Vassanasiri, Pongsatorn Tangtawee, Paramin Muangkaew, Somkit Mingphruedhi, Suraida Aeesoa, Wikran Suragul, Narongsak Rungsakulkij, Watoo Vassanasiri, Pongsatorn Tangtawee, Paramin Muangkaew, Somkit Mingphruedhi, Suraida Aeesoa

Abstract

Background: Surgical site infection (SSI) is one of the most common complications after pancreaticoduodenectomy (PD). Thus, it is beneficial to preoperatively identify patients at high risk of developing SSI. The primary aim of the present study was to identify the factors associated with SSI after PD, and the secondary aim was to identify the adverse outcomes associated with the occurrence of SSI.

Methods: A single-centre retrospective study was conducted. All 280 patients who underwent PD at our institution from January 2008 to December 2018 were enrolled. Demographic and perioperative data were reviewed, and the potential risk factors for developing SSI and the adverse outcomes related to SSI were analysed.

Results: A total of 90 patients (32%) developed SSI. Fifty-one patients developed incisional SSI, and 39 developed organ/space SSI. Multivariate logistic analysis revealed that the significant risk factors for developing incisional SSI were preoperative biliary drainage (odds ratio, 3.04; 95% confidence interval, 1.36-6.79; p < 0.05) and postoperative pancreatic fistula (odds ratio, 2.78; 95% confidence interval, 1.43-5.38; p < 0.05), and the risk factors for developing organ/space SSI were preoperative cholangitis (odds ratio, 10.07; 95% confidence interval, 2.31-49.75; p < 0.05) and pancreatic fistula (odds ratio, 6.531; 95% confidence interval, 2.30-18.51; p < 0.05). Enterococcus spp., Escherichia coli and Klebsiella pneumoniae were the common bacterial pathogens that caused preoperative cholangitis as well as SSI after PD. The patients in the SSI group had a longer hospital stay and a higher rate of delayed gastric emptying than patients in the non-SSI group.

Conclusions: The presence of postoperative pancreatic fistula was a significant risk factor for both incisional and organ/space SSI. Any efforts to reduce postoperative pancreatic fistula would decrease the incidence of incisional SSI as well as organ/space SSI after pancreaticoduodenectomy. Preoperative biliary drainage should be performed in selected patients to reduce the incidence of incisional SSI. Minimizing the occurrence of preoperative cholangitis would decrease the incidence of developing organ/space SSI.

Keywords: Pancreaticoduodenectomy; Risk factors; Surgical wound infection.

Conflict of interest statement

The authors declare that they have no competing interests.

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