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  • Title: Predictors of endoscopic findings after Roux-en-Y gastric bypass.
    Author: Wilson JA, Romagnuolo J, Byrne TK, Morgan K, Wilson FA.
    Journal: Am J Gastroenterol; 2006 Oct; 101(10):2194-9. PubMed ID: 17032183.
    Abstract:
    OBJECTIVES: To evaluate predictors of endoscopic findings in symptomatic patients after Roux-en-Y gastric bypass (RYGBP) for obesity. METHODS: A retrospective chart review of 1,001 RYGBP procedures was performed. Two hundred twenty-six (23%) patients were identified as having endoscopy to evaluate upper gastrointestinal symptoms following surgery. Polychotomous logistic regression analysis was used to assess predictors of normal endoscopy, marginal ulcers, stomal stenosis, and staple-line dehiscence. RESULTS: The most common endoscopic findings were 99 (44%) normal postsurgical anatomy, 81 (36%) marginal ulcer, 29 (13%) stomal stenosis, and 8 (4%) staple-line dehiscence. Factors that significantly increase the risk of marginal ulcers following surgery include smoking (AOR = 30.6, 95% CI 6.4-146) and NSAID use (AOR = 11.5, 95% CI 4.8-28). PPI therapy following surgery was protective against marginal ulcers (AOR = 0.33, 95% CI 0.11-0.97). Median time for diagnosis of marginal ulcers following surgery was 2 months, and 77 of 81 (95%) presented within 12 months. CONCLUSIONS: Following RYGBP surgery for obesity, smoking and NSAID use significantly increase the risk of marginal ulceration, and PPI therapy is protective. Because a significant majority of marginal ulcers present within 12 months of surgery, it may be reasonable to consider prophylactic PPI therapy during this time period, especially for high risk patients.
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