Endoscopic findings for predicting gastric acid secretion status

Area of Science:

• Gastroenterology
• Endoscopy
• Acid Secretion Physiology

Background:

• Gastric acid abnormalities are linked to various diseases, often influenced by Helicobacter pylori infection.
• Previous research has not simultaneously correlated numerous subtle endoscopic findings with precise acid secretion levels.
• This study aimed to identify predictive endoscopic markers for altered gastric acid production.

Purpose of the Study:

• To investigate specific, subtle endoscopic findings that can predict hyperchlorhydria (excess acid) and hypochlorhydria (low acid).
• To establish correlations between endoscopic observations and gastric acid secretion status.
• To assess the utility of these findings in evaluating risks for acid-related gastrointestinal diseases.

Main Methods:

• Retrospective analysis of 223 subjects without organic diseases undergoing esophagogastroduodenoscopy and endoscopic gastrin tests (EGT).
• Subjects were categorized into hyperchlorhydria, normal acid secretion, and hypochlorhydria groups based on EGT results.
• Two expert endoscopists independently reviewed endoscopic images, recording specific findings.

Main Results:

• Hematin and antral erosion were predictive of hyperchlorhydria (OR 3.32 and 2.88, respectively).
• Swelling of areae gastricae and open-type atrophy were predictive of hypochlorhydria (OR 14.4 and 15.1, respectively).
• Predictive findings for hyperchlorhydria varied with H. pylori status (hematin in positive, antral erosion in negative), while hypochlorhydria predictors were consistent.

Conclusions:

• Gastric acid secretion status can be predicted using endoscopic findings, independent of H. pylori infection status.
• These endoscopic markers provide valuable insights for assessing the risk of acid-related diseases.
• Subtle endoscopic observations offer a non-invasive method for inferring acid secretion levels.