The glucose breath test: a diagnostic test for small bowel stricture(s) in Crohn's disease.

The aim of this study was to determine whether an indirect noninvasive indicator of proximal bacterial overgrowth, the glucose breath test, was of diagnostic value in inflammatory bowel disease. Twenty four of 71 Crohn's disease patients tested had a positive glucose breath test. No statistical conclusions could be drawn between the Crohn's disease activity index and glucose breath test status.

Fructose and sorbitol malabsorption in ambulatory patients with functional dyspepsia: comparison with lactose maldigestion/malabsorption.

The aim of this study was to study sugar maldigestion/malabsorption in patients with functional dyspepsia using H2 breath testing. End-expiratory breath H2 after separate challenges with lactose (25 g), fructose (25 g), and sorbitol (5 g) were used to determine malabsorption, as well as small bowel transit time (SBTT). Five hundred twenty patients with functional dyspepsia received all three challenges.

Increased prevalence of lactose malabsorption in Crohn's disease patients at low risk for lactose malabsorption based on ethnic origin.

Objectives: The aim of this study was to compare the prevalence of lactose malabsorption (LM) in various subgroups of inflammatory bowel disease patients with controls matched for age, sex, and ethnic origin.

Methods: In 260 patients with IBD [121 Crohn's disease (CD) and 139 ulcerative colitis (UC)] and 158 controls at low and moderate risk for LM the prevalence of lactose malabsorption was determined by H2 breath testing.

Results: A control group at low ethnic risk had a prevalence of LM of 29.