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Pancreatic tumours are frequently associated with obstructive jaundice requiring preoperative biliary drainage (PBD) before pancreatoduodenectomy (PD), exposing patients to infectious complications. This study aims to compare postoperative complications after PD with or without PBD and to analyse bile bacteriology and antibiotic susceptibility. All patients undergoing PD between 2014 and 2019 were retrospectively evaluated, and postoperative outcomes were compared according to PBD use. Prophylactic narrow-spectrum antibiotic therapy was given for 24 h, then adapted according to bacteriologic profile. Intraoperative bile cultures and antibiograms were collected. Among 164 patients with intraoperative bile culture during PD (75 PBD+, 89 PBD–), an infected bile was observed in 95% and 70% of PBD + and PBD– groups, respectively ( p  &lt; 0.001). Postoperative mortality and severe morbidity including infectious complications were similar between groups (5% and 15%). The median duration of antibiotherapy was longer in PBD + compared to PBD– groups (9 vs. 2 days,  p  = 0.009). Malignant indication and PBD were associated with bile contamination using univariate analysis, and PBD was significantly relevant at multivariate analysis. Most common pathogens identified in bile cultures were  Escherichia coli ,  Klebsiella spp . and  Enterobacter spp . Overall antibiotic susceptibility to commonly used antibiotics was decreased, including those used in our local guidelines. PBD exposes nearly 100% of patients undergoing PD to bile infection and an increased duration of postoperative antimicrobial therapy, without increasing infectious complications in this study. Adaptation of antimicrobial prophylaxis should be further evaluated according to performance of PBD and local epidemiology, in order to avoid overuse of antibiotics.

acta chirurgica belgica

Perioperative antimicrobial prophylaxis in patients undergoing pancreatoduodenectomy: retrospective analysis of bacteriological profile and susceptibility