title: Gastric emptying of liquid meals and pancreatic and biliary secretion after subtotal gastrectomy or truncal vagotomy and pyloroplasty in man.
abstract: Pancreatic and biliary secretion and gastric emptying rates of a liquid test meal (LTM) were determined in normal persons, in patients with subtotal gastrectomy with gastroduodenostomy (STG-BI) or with gastrojejunostomy (STG-BII), and in patients with truncal vagotomy and pyloroplasty (V&P). In all operated persons, rapid gastric emptying diluted intraluminal contents, with consequent abnormally low concentrations of trypsin and bile salts initially, a pattern that was not corrected by addition of intravenous hormones to the meal stimulus. Trypsin output in V&P's after the LTM was significantly depressed to 40% of normal, but was normal in the STG groups. The delay in reaching normal values for trypsin and bile salt concentrations, was more marked in STG-BII owing to sequestration of secretions in the afferent loop. The low luminal concentrations of digestive secretions for the first 60 to 80 min after a LTM are therefore attributable to rapid gastric emptying in all operated groups, and in V&P to a depressed pancreatic enzyme response also. In STG-BII, afferent loop sequestration exaggerates the delay in attainment of normal intraluminal concentrations. The combined disturbance in STG-BII produces greater abnormalities than seen in STG-BI.
mesh_terms: D000328:Adult; D001647:Bile Acids and Salts / Q000378:metabolism; D001652:Bile Ducts / Q000378:metabolism*; D002766:Cholecystokinin / Q000378:metabolism; D004386:Duodenum / Q000601:surgery; D005502:Food; D005743:Gastrectomy; D005774:Gastrostomy; D006801:Humans; D007583:Jejunum / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000378:metabolism*; D011092:Polyethylene Glycols / Q000378:metabolism; D011708:Pylorus / Q000601:surgery*; D013270:Stomach / Q000502:physiology*; D014357:Trypsin / Q000378:metabolism*; D014628:Vagotomy
chemical_list: D001647:Bile Acids and Salts; D011092:Polyethylene Glycols; D002766:Cholecystokinin; D014357:Trypsin