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  • Title: Epidemiology and outcomes associated with surgical site infection following bariatric surgery.
    Author: Chopra T, Marchaim D, Lynch Y, Kosmidis C, Zhao JJ, Dhar S, Gheyara N, Turner D, Gulish D, Wood M, Alangaden G, Kaye KS.
    Journal: Am J Infect Control; 2012 Nov; 40(9):815-9. PubMed ID: 22325729.
    Abstract:
    BACKGROUND: Surgical site infection (SSI) is a frequent problem complicating bariatric surgery. However, the potential risk factors, risk stratification, and outcomes of SSIs in this patient population remain poorly defined. The aim of this prospective case-control study was to characterize better the risk factors and to improve risk stratification for SSIs following bariatric surgery. METHODS: Patients studied had SSI following Roux-en-Y gastric bypass surgery (RYGBS) between November 2006 and March 2009 at Harper University Hospital and were each matched with 3 controls based on type of operative procedure, surgeon, and year of surgery. Thirty-day outcomes included mortality, hospital readmissions, outpatient procedures, and emergency room visits. A scoring system (BULCS score) was compared with the National Nosocomial Infections Surveillance system risk index using logistic regression. RESULTS: In multivariate analysis, duration of surgery (odds ratio [OR], 3.3; 95% confidence interval [CI]: 1.62-6.74), diagnosis of bipolar disorder (OR, 3.341; 95% CI: 1.0-12.27), use of prophylactic antibiotics other than cefazolin (OR, 4.2; 95% CI: 1.47-11.69), and sleep apnea (OR, 1.8; 95% CI: 1.05-2.97) were significantly associated with SSI. Patients with SSI were more likely to have return emergency visits (OR, 4.96; 95% CI: 2.9-8.48), readmission (OR, 6.53; 95% CI: 3.44-12.42), and outpatient procedures following surgery (OR, 4.75; 95% CI: 1.32-17.14) than were controls without SSI. The BULCS score was a stronger predictor of SSI than the National Nosocomial Infections Surveillance system (C-statistic, -0.62 vs 0.55, respectively). CONCLUSION: SSI following bariatric surgery was associated with receipt of antibiotic prophylaxis other than cefazolin and comorbid conditions including sleep apnea and bipolar disorder. The BULCS score performed favorably as a predictor and risk adjuster for SSI following bariatric surgery. SSI was associated with increased health care resource utilization.
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