J.Jpn. Surg. Soc.. 59(10): 1614-1629, 1959
THE BEHAVIOR OF THE COLON DURING OBSTRUCTION OF THE SMALL INTESTINE
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1st Surgical Department, Tokushima University School of Medicine (Director : Prof. Shuhei TAKlTA) Kazuo FUKUSHIMA |
2) Analysis of the records of the movements of the normal colon has shown two characteristic types of wave, the small wave and the fundamental rhythmic movement and the latter by the tonic factor of contraction.
3) The movements of the intestine immediately above the site of obstruction are augmented in the initial stage, but subsequently become more tonic in character, showing the so-called "vicissitude curve" in the pressure records. In correspondence to such changes in the movements of the small intestine, the proximal colon and the rectum rapidly become inert by this stage, i.e., the large waves gradually disappear and later the curve flattens. These inhibitory phenomena seem to be aggravated with the development of pathological process due to obstruction.
4) In the experimental obstruction of the small intestine, in dog, the balloon was observed by distending the balloon. With the development of obstruction, the active phase of the movements became shorter and finally disappeared in 53.5 hours after the obstruction. It is interesting ot note that the reactivity of the inert colon or rectum to distending stimulus remained comparatively longer.
5) Denervation of Thiry-Vella's loop of the proximal colon resulted in the pressure curve showing alterations of augmented and diminished phases of the motor activity. In the presence of the obstruction of the small intestine, the denervation of Thiry-Vella's loop resulted in a similar change in the activity pattern, but no inhibition of the loop exactly caused by the distension above the obstruction was demonstrated.
6) In a stage, in which the movements of the small intestine immediately above the obstruction show the so called hypertonic waves, and the proximal colon and rectum are inhibitory, no definite relation was demonstrated between the systemic blood pressure and the intestine.
(author's abstract)
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