Glucose and insulin levels in duodenal ulcer disease before and after surgery.

Glucose and insulin responses to a standardized test meal in patients with chronic duodenal ulceration were measured pre-operatively and again post-operatively. An abnormal pre-operative glucose tolerance contributes to an even more deranged post-operative glucose tolerance. However, following administration of an alpha-glucosidase inhibitor, Acarbose, these post-operative abnormalities are markedly attenuated.