J.Jpn. Surg. Soc.. 56(10): 1308-1320, 1956

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A STUDY ON THE INTESTINAL GAS IN EXPERIMENTALLY PRODUCED INTESTINAL OBSTRUCTION Part Ⅱ: THE EFFECT OF THE INTESTINAL GAS ON THE INTESTINAL MOTILITY

The effect of various gases such as CO₂, H₂ S, O₂, H₂, N₂ and air introduced in the intestinal canal on the intestinal motility was studied in rabbits and dogs by Trendelenburg's method and by intraluminal pressure recording. The significance of the gas in abnormal intestinal motility by ileus was also investigated, and the follwing results were obtained:
(1) No effect of O₂, H₂, N₂ and air introduced into intestinal canal on intestinal motility was observed.
(2) By the introduction of CO₂ gas into intestinal canal peristaltic movement became indistinct. and abnormal waves of tonic variation appeared. Due to the abnormal tonic variation, on mechanogram there were only large waves and they became so-called vicis-situdious type and occasionally spasm was seen.
(3) H₂S gas also had similar effects to those of CO₂ gas.
(4) The abnormal intestinal movements produced by CO₂ or H₂S gas were very similar to those observed in intestinal obstruction. With the fact that these gases are formed abunduntly in the intestinal canal by ileus, it may be considered that the abnormal intestinal movement by ileus has some etiological relationship with gases formed by decomposition of the intestinal contents.
(author's abstract)

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