[Effects of Helicobacter pylori on the results of conservative surgery in duodenal ulcer].

Sixty-two patients with exacerbation of duodenal ulcer were tested for Helicobacter pylori (HP). Bacterial invasion was found in 54 out 62 patients (87%). The degree of bacterial dissemination, the physiological resistance of the tegmental epithelium, and granulocytic infiltration of the mucosa were studied one and three months after selective proximal vagotomy (SPV) in 16 patients with HP. The control group consisted of seven patients without HP. It was found that bacterial invasion led to diminution of the physiological resistance of the tegmental epithelium and caused a chronic inflammatory process in the mucosal stroma. Bacterial dissemination after the operation not only corresponded to its initial level in the duodenum but tended to increase in the antrum and fundus of the stomach.