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A technique for screening of achlorhydria and hypochlorhydria during upper gastrointestinal endoscopy.
Scandinavian Journal of Gastroenterology 1990 October
Measuring of the intragastric pH during upper gastrointestinal endoscopy examination was performed perendoscopically with a monocrystalline antimony electrode, which was passed through the biopsy channel of the endoscope. The procedure was easily performed, resulting in only a few minutes' delay. If the pH found was 3.5 or above, the patients were later sent for a subcutaneous pentagastrin aspiration test. There was a close correlation between the lowest intragastric pH measured via the endoscope and the lowest pH measured in the gastric juice aspirated under basal conditions (r = 0.673, p less than 0.0001). An endoscopically assessed pH of 4.0 was the lowest level above which patients with achlorhydria or hypochlorhydria were found, according to the subsequent pentagastrin test. Fifty-five per cent of the patients with a perendoscopically assessed pH of 4.0 or above were achlorhydric.
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