Effect of different warm ischemia temperature on the motion of small intestinal graft in pig

Objective To study the effect of different warm ischemia temperature on the motion of the small intestinal graft. Methods The effect of warm ischemia at 25℃,30℃ and 37℃ on intestinal myoelectricity was recorded by using an electrophysiological multichannel apparatus. At the same time, the myoelectricity was measured 30 min and 3 weeks after small intestinal autotransplantation in pigs and the intestinal peristalsis observed. Results Warm ischemia alleviated the peristalsis which was negatively correlated with temperature. The higher the temperature, the worse the recovery of the peristalsis after transplantation. The higher the temperature, the lower the myoelectric frequency and amplitude. The myoelectric amplitude 3 weeks after transplantation at 37℃ was less than 1/3 of the control group. Conclusion When the ischemic time of intestine lasted up to 8 min at 37℃ or over, the motion of the intestine was obviously decreased. Key words: Temperature; Anoxia; Intestine,small; Electromyography; Gastrointestinal motility