[Effect of fat on the evacuatory function of the stomach].

In dogs with a postpyloric fistula, the food with relatively large content of fat passed out of the stomach by equal portions although not exponentially. The size of these portions seem to be determined by the ability of small intestine to digest and absorb the portion of fat which has passed the pyloric sphincter. Besides, the fat in the food increases pH of chyme in the duodenum. Similar findings are reported for healthy subjects and patients with the duodenum ulcer. The inhibitory effect of fat on the stomach and duodenum motility depends on the initial background of contractile activity of the digestive tract. The positive role of fat in self-convalescence from the ulcer disease is suggested.