Introduction: Roux-en-Y gastric bypass (RNYGB) surgery offers an effective and enduring treatment for morbid obesity. Gastric bypass may alter gastrointestinal (GI) flora possibly resulting in bacterial overgrowth and dysmotility. Our hypothesis was that daily use of probiotics would improve GI outcomes after RNYGB. Methods: Forty-four patients undergoing RNYGB were randomized to either a probiotic or control group; 2.4 billion colonies of Lactobacillus were administered daily postoperatively to the probiotic group. The outcomes of H2 levels indicative of bacterial overgrowth, GI-related quality of life (GIQoL), serologies, and weight loss were measured preoperatively and at 3 and 6 months postoperatively. Categorical variables were analyzed by χ 2 test and continuous variables were analyzed by t test with a p∈
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Woodard, G. A., Encarnacion, B., Downey, J. R., Peraza, J., Chong, K., Hernandez-Boussard, T., & Morton, J. M. (2009). Probiotics improve outcomes after roux-en-Y gastric bypass surgery: A prospective randomized trial. Journal of Gastrointestinal Surgery, 13(7), 1198–1204. https://doi.org/10.1007/s11605-009-0891-x
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