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排便为一复杂的反射综合生理活动。人工肛门成形,要求具备贮存、感觉及括约肌能力。当前各家均致力于各种类型的括约肌重建(利用股薄肌或臀大肌),已取得一定效果。结肠套叠式人工肛门,操作简单,在一定程度上能控制排便,但套叠环不具备括约肌能力,其作用主要通过套叠造成不全梗阻,阻挡肠内容直接外流,增加结肠对水分再吸收,当成形粪便增多时,使肠腔内压增高,产生便意。若不注意手术细节,还可出现狭窄、梗阻及坏死等并发症。因此这一术式,尚应定期了解瓣、环功能的客观观察指标,加强远期效果观察。
Defecation is a complex reflex physiological activity. Artificial anal shaping requires storage, sensation, and sphincter capacity. At present, each family is committed to the reconstruction of various types of sphincter (using gracilis or gluteus maximus), and has achieved certain results. Colonic telescopic artificial anus, simple operation, to a certain extent, can control defecation, but the sleeve ring does not have the sphincter capacity, its role is mainly caused by incomplete obstruction intussusception, blocking the intestinal contents directly outflow, increase the colon reabsorption of water, When the forming manure increases, so that the intra-abdominal cavity pressure increases, resulting in it. If you do not pay attention to the details of surgery, complications such as stenosis, obstruction and necrosis can also occur. Therefore, this surgical method should still regularly understand the objective indicators of valve and ring function, and strengthen the observation of long-term effects.