Background: The patient with colonic obstruction may frequently have bacterial overgrowth and increased breath hydrogen (H2) levels because the bacterium can contact with food residues for longer time. We experienced two cases with intestinal obstruction whose breath H2 concentrations were measured continuously. Case 1: A 70-year-old woman with small bowel obstruction was treated with... https://www.storeanimalwiz.shop/product-category/grubs-and-worms/