Assessment of Gastric Acidity by Conventional Endoscopy With Serological Gastric Markers

Byung Chul Kim, Mi Ae Song, Sung Ho Kwon, Min Ji Kim

Abstract


Background: Gastric acidity could determine Helicobacter pylori (H. pylori)-associated gastritis patterns. In reverse, H. pylori infection could lead disturbance in gastric acid secretion. We attempted to elucidate gastric acid status by conventional endoscopy with pepsinogen test.

Methods: A total of 196 subjects who visited our health promotion center were consecutively enrolled and evaluated by conventional endoscopy, and blood examinations with pepsinogen I, II, and fasting serum gastrin were conducted. As a Japanese study suggested that in H. pylori-positive subjects the cutoff value was PG I/II ratio ≤ 2.7 for hypochlorhydia, PG I/II ratio ≥ 3.3 for hyperchlorhydria. Based on these serological data, we compared conventional endoscopic images with each acid level.

Results: It showed that for hypoacidity, older age, and most of the H. pylori-associated endoscopic appearances featuring mucosal inflammation and more atrophy of corpus or antrum were in favor of hypoacidity in closed type. Mucosal appearances showing severe corpus atrophy and remnant gastritis with advanced background atrophy determine hypoacidity in open type. For hyperacidity, mucosal appearances featuring intact mucosa and less severe atrophy were associated with hyperacid status. Male gender, antrum camouflage were also involved in hyperacidity.

Conclusions: Conventional endoscopy with pepsinogen test could be useful in gastric acid assessment.




Gastroenterol Res. 2018;11(2):112-123
doi: https://doi.org/10.14740/gr980w


Keywords


Gastric acid secretion; Serum pepsinogen; Helicobacter pylori

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