[The significance of duodenal passage for insulin and gastrin secretion in patients following total gastrectomy].

After total gastrectomy and different forms of reconstruction as well as before and after B II-B I conversion, an oral glucose tolerance test was performed in 24 patients, and insulin and gastrin secretion were measured. The results in the patients with preserved or reestablished passage of the glucose through the duodenum demonstrate that (1) the glucose tolerance is significantly better, (2) the secretory capacity of the beta-cells is about twofold greater, and (3) the postprandial gastrin secretion is about threefold greater.