J.Jpn. Surg. Soc.. 56(3): 273-282, 1955

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AN EXPERIMENTAL STUDY ON ABNORMAL MOVEMENTS OF STRANGULATED SMALL INTESTINE

The abnormal movements of the small intestine were studied in rabbits during and after experimental strangulation by means of cinematography, kymography and by the abdominal window technique, and the following results were obtained :
(1) The motility of the strangulated segment of small intestine was augumented indipendently from the other portion of the bowel in the early stage of strangulation or before the appearance of Wahl's sign. This augumentation was usually followed by a gradual development of continuous or tonic contraction of the strangulated segment, and also an increase in its contents was observed. When the bowel was strangulated for 6 hours the intestinal motility was completely abolished and the increase in intestinal contents was seen for 12 hours.
(2) When the iniestine was strangulated for 2 to 3 hours and released, the return of blood flow was always ensured.
Adhesions of the surrounding tissues or organs to the strangulated segment were found in the majority of the cases. There was also an abnormal relaxation of the segment for 4 to 5 days following the release of strangulation. This fact might explain the functional disturbance of the strangulated segment postoperatively.
(author's abstract)

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