Electrolytes in the smooth muscle tissue of the alimentary canal were measured and their behavior under various conditions were studied on the basis of values measured. The results are summarized as follows: 1. Organic changes due to
edema and the like are more prominent in the region near the
wound in cases of damaged intestine. Utmost care should therefore be exercised when surgical treatment including resection of the intestine is given. 2. Variations in
electrolytes are slight in cases of mesenteric
hematoma, and surgical treatment is not necessary. 3. Variations in
electrolytes are rather prominent in cases of
intestinal fistula, and full consideration should be given to the balance of
electrolytes, particularly supplement of K. 4. In casees of intestinal anastomosis, the rate of variation is the highest near the site of anastomosis and on the third day after surgery. Therapeutically, therefore, attention should be given to prevention of complications such as incomplete
suture. 5. In cases of
intestinal obstruction, variations are more marked and rapid. It brings about a high degree of disequilibrium of intra-tissue
electrolytes in the upper intestinal tract; hence the early and adequate treatments are needed.