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Updated: Dec 31, 2025

One-anastomosis Gastric Bypass OAGB in Rats
Published on: November 10, 2018
Diagnostic and Therapeutic Management of Post-Gastric Bypass Chronic Diarrhea: a Systematic Review
Camille Sollier1, Charles Barsamian1, Marion Bretault2
1AP-HP, Department of Nutrition, Centre spécialisé de l'Obesité Hôpital Européen Georges Pompidou, Paris, France.
Abstract:
There is a lack of recommendation regarding exploration and treatment of chronic diarrhea following gastric bypass, while it is a common side effect of this surgery. The electronic databases MEDLINE and EMBASE were searched until July 2018. Of the 553 articles identified, 35 articles were included. Intestinal bacterial overgrowth and pancreatic exocrine insufficiency are the main etiologies of diarrhea following gastric bypass. The diagnostic approach must begin by eliminating infectious causes of diarrhea. Exocrine pancreatic insufficiency can be diagnosed with fecal fat quantification or fecal elastase 1 level evaluation. A positive lactulose breath test confirms suspicion of small intestine bacterial overgrowth. In conclusion, we propose sequential exploration and treatment of the possible etiologies of diarrhea depending on clinical symptoms.
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