Outcomes of extended-spectrum beta-lactamases producing Enterobacteriaceae colonization among patients abdominal surgery patients.

Preoperative enteric screening for extended-spectrum β-lactamase (ESBL)–producing Enterobacteriaceae was conducted in 360 patients prospectively observed for surgical site infection (SSI). ESBL colonization (adjusted odds ratio [aOR], 2.4) and dirty wound classification (aOR, 3.6) were associated with SSI; no association between carbapenem prophylaxis and reduction in SSI was detected.