title: [Interdigestive and postprandial duodenal pH in healthy probands, in patients with ulcer and in chronic pancreatitis].
abstract: In patients with chronic pancreatitis (48), gastric ulcer (6), duodenal ulcer (6) and controls (12) duodenal pH was measured continuously by a glass electrode before and 90 minutes after a standard meal. The capacity of the stomach to secrete acid was known in all test persons, the degree of exocrine pancreatic insufficiency was determined according to the results of the S-CCK-test: 6 had no, 29 moderate and 13 severe pancreatic insufficiency. There were no significant differences between the mean interdigestive duodenal pH of the groups. After a meal, however, even patients with a normal pancreatic function but with hyperchlorhydria had a significantly lower pH (mean pH 5.5) than those with normo-chlorhydria (mean pH 6.1) and hypochlorhydria (mean pH 6.5). In patients with severe pancreatic insufficiency and normo-/hyperchlorhydria duodenal pH was much lower (mean pH 4.2) in some cases to pH 3.5, thus well below a level known as inactivating pancreatic enzymes. The total duration of the pH being less than 4.5 amounted to 12% of the postprandial measuring time (11 of 90 min). If, however, severe pancreatic insufficiency was combined with a-/hypochlorhydria duodenal pH did not differ from controls. Thus, reduced acid secretion of the stomach exerts beneficial effect on duodenal pH in patients with severe pancreatic insufficiency.
authors.affiliation: Abteilung für Gastroenterologie, Bereichs Medizin der Wilhelm-Pieck-Universität Rostock.
authors.forename: B
authors.initials: B
authors.lastname: Gerber
authors.forename: S
authors.initials: S
authors.lastname: Gerber
authors.forename: R
authors.initials: R
authors.lastname: Arendt
mesh_terms: D000136:Acid-Base Equilibrium; D001639:Bicarbonates / Q000502:physiology; D002908:Chronic Disease; D004381:Duodenal Ulcer / Q000503:physiopathology*; D004386:Duodenum / Q000503:physiopathology*; D004435:Eating; D010188:Exocrine Pancreatic Insufficiency / Q000503:physiopathology; D005744:Gastric Acid / Q000502:physiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010195:Pancreatitis / Q000503:physiopathology*
chemical_list: D001639:Bicarbonates
vernacular_title: Das interdigestive und postprandiale duodenale pH bei Gesunden, Ulkuskranken und bei chronischer Pankreatitis.