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Congress of the German Society of Internal Medicine
The main paper on the second topic, "The newer methods of testing the functioning of the stomach and duodenum," was presented by Katsch of Frankfort-on-the-Main. In testing the activity of the stomach, two of the newer methods that mark distinct progress are: (1) the introduction of the retention sound, and (2) the modification of conceptions in regard to gastric acidity. Titration of the gastric contents is recommended, which is easily accomplished through the introduction of simple stimulating solutions. This procedure is based on study of the hydrochloric acid secretion of the stomach, and it was proved that the hydrochloric acid content of gastric juice varies under physiologic conditions. The variations in stimulability are utilized diagnostically in pathologic cases. The author discussed the modern method of introducing stimulating solutions as compared with the fixed conclusions as to gastric secretion based on the Riegel
BERLIN. JAMA. 1927;88(26):2045–2046. doi:10.1001/jama.1927.02680520035021
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