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消化系统损害在肾衰病人常常较早出现,表现有厌食、恶心、晨餐后最明显、进一步可出现呕吐及消化道出血等,因而往往影响病人的预后。导致上述病变的原因是:①尿毒症性潴留物质及其消化道内的分解产物对消化道粘膜和细菌丛的影响,如尿素分解产物氨,刺激并溶解胃壁表面的粘膜,降低了粘膜的防御机能,加上粘液分泌减少及其他胃粘膜防御因子产生低下,更使粘膜防御功能降低。②正常肾
Digestive system damage in patients with renal failure often appear earlier, the performance of anorexia, nausea, after the most obvious meal, further vomiting and gastrointestinal bleeding, which often affect the patient’s prognosis. The causes of these lesions are: ① uremic retention substances and digestive tract decomposition products on the digestive tract mucosa and bacterial flora, such as urea decomposition products ammonia, stimulate and dissolve the gastric mucosa surface, reducing the mucosal defense function , Coupled with reduced mucus secretion and other gastric mucosal defensive factor is low, but also to reduce mucosal defense. ② normal kidney