[Experiments in animals in connexion with truncal and selective gastric vagotomy in rats (author's transl)].

The effects of truncal and selective gastric vagotomy after 9 h ligation of the pylorus were studied on Shay rats. No statistically significant difference was found with regard to gastric tonicity, volume of gastric juice, its pH value, nor with regard to the acidity. However, the size of the stress ulcers showed evident differences; vagotomy of the trunk protects the rat better from developing ulcers than selective vagotomy. By means of additional experiments e.g. ligature of the left gastric artery, truncal and selective gastric vagotomy performed simultaneously, we could demonstrate that this statistically significant difference is due to devascularisation of the lesser curvature of the stomach.