小腸運動機構に関する実験的研究 (第2報)

抄録

Experimental studies on the mechanism of the intestinal contractile frequency were performed electromyographically. The spike discharges were recorded from the intestinal wall of mongrel dogs with several surgical procedures. The frequency of spikeburst as a pattern of electromyogram was investigated
1. In the jejunum, the intestinal segment of approximately 5 cm in length, was isolated. The frequency in this segment was 12.6 cycles per minute (cpm).
2. The frequency was measured after transection and reunion of the lower ileum. The result in the upper part from anastomotic line was 13.3 cpm and in the lower part, it was 10.5 cpm.
3. The transection and reunion was performed approximately 2 cm distal from the choledocho-duodenal junction. The frequency in the upper part of anastomosis was 18.4 cpm and it was 13.7 cpm in the lower part. When the same procedure was performed in the proximal area from the choledocho-duodenal junction, the frequency in distal to the transection was 17.6 cpmand it was 17.7 cpm after pylorectomy. These results showed the same frequency as normal condition in the duodenum. Therefore when the transection and reunion was performed in the area where proximal from the choledocho-duodenal junction, there were no remarkable changes inthe frequency of the lower part of anastomosis.
4. When an upper jejunal segment of approximately 5 cm in length was interposed to the lower ileum under isoperistaltic anastomosis, this segment demonstrated the original pattern as usual of the jejunum.