Practical physiological chemistry; a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . k: Jour. Am. Med. Ass^n, 63, 11, 1914.* Harmer and Dodd: Arch. Int. Med., Nov. 13, 1913, p. 488. 148 GASTRIC ANALYSIS 149 gastric digestion and is not limited, as in the old method, to informationderived from the analysis of a single sample of stomach contents with-drawn at the end of one hour. That the acid values obtained by theold method may be grossly misinterpreted and lead to an incorrectdiagnosis is indicated by the foregoing diagram (Fig. 41
Practical physiological chemistry; a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . k: Jour. Am. Med. Ass^n, 63, 11, 1914.* Harmer and Dodd: Arch. Int. Med., Nov. 13, 1913, p. 488. 148 GASTRIC ANALYSIS 149 gastric digestion and is not limited, as in the old method, to informationderived from the analysis of a single sample of stomach contents with-drawn at the end of one hour. That the acid values obtained by theold method may be grossly misinterpreted and lead to an incorrectdiagnosis is indicated by the foregoing diagram (Fig. 41): It is set forth in the above diagram that various t>pes of abnormalgastric secretion would be considered normal on the basis of a singleexamination at the end of one hour whereas the application of thefractional method reveals the abnormality of the secretion and enablesa rapid and correct diagnosis. The removal of samples of gastriccontents at short intervals, for a period of two hours or more after atest meal, is made possible by the use of a modified stomach tube^ ofsmall diameter (No. 12 French tubing) and fitted with a metal Fig. 42.—Rehtuss Stomach Tube. The tip is slotted ^^ith large perforations, the diameter of each beingequivalent to the maximum bore of the tubing. Such a tube can beleft in the stomach through the entire cycle of gastric digestion \Nithoutinconvenience to the A cut of the Rehfuss stomach tube(Fig. 42) is shown above.^ The idea of making a fractional examination of gastric contents isnot new. Most of such attempts have been made, however, by usingthe old t^-pe of stomach tube and removing the entire stomach contentsat different intervals on successive days, , after fifteen minutes thefirst day, thirty minutes the second day, forty-five minutes the thirdday, etc. Hayem* was the first to employ this method and later 1 Rehfuss: Am. Jour. Med. ScL, June, 1914. ^ McClendon has recently suggested the introduction of an electrode i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiochem, bookyear1916
