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BACKGROUND/AIMS: pH monitoring of the esophagus has been considered as the gold standard for the measurement of acid reflux. However, it has several limitations related to its inability to detect...
Ambulatory 24-hr esophageal pH monitoring is considered the gold standard for diagnosing gastroesophageal reflux disease. The aim of this study was to establish normal values for gastroesophageal acid exposure in...
BACKGROUND/AIMS: The 13C-urea breath test (UBT) is a semiquantitative test for measuring Helicobacter pylori infection loading. H. pylori produces ammonia, which elevates the pH of the gastric mucosa and...