[Selective proximal vagotomy and truncular vagotomy - comparison based on animal models]

After high-selective vagotomy without pyloroplasty and after transthoracic truncular vagotomy in combination with pyloroplasty serum gastrin and gastric acid secretion were checked in short time intervals. The stimulation was produced by a standard test meal and by insulin induced hypoglycemia before and after vagotomy. The changes observed in serum gastrin levels before and after both kinds of vagotomy indicate a temporary influence on the emptying of the stomach. The decrease in gastric acid output following selective or truncular vagotomy demonstrates a delay of therapeutic effect.