Effect of Vagotomy or Splanchnicectomy on the Motility of the Canine Stomach with Transection-anastomosis

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Abstract
Transection-anastomosis of the canine stomach generally caused frequent development of vigorous anti-peristalsis in the portion distal to the anastomosis. With the use of electromyography, effect of vagotomy or splanchnicectomy on this alteration of the gastric motility was studied. Vagotomy of splanchnicectomy caused little change in the gastric motility of the dogs in which transection of the stomach was not performed previously. Frequent occurrence of anti-peristalsis was observed distal to the anastomotic line when the transection-anastomosis was performed at the corpus-antrum border of the stomach. Furthermore, no noticeable change in the frequency of anti-peristalsis of the stomach was seen in spite of combined vagotomy or splanchnicectomy on the dogs which was previously subjected to the transection-anastomosis of the stomach. The development of anti-peristaltic discharges after the transection-anastomosis was not related to the severance of gastric innervation, but may closely be related to the excitation of the gastric wall per se caused by the transection of the stomach as reported previously.

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