中文摘要：

目的直肠肛门运动与感觉功能发生改变会影响到排便功能。本文通过分析经肛巨结肠根治术后患儿直肠肛门动力与感觉功能的客观检测指标变化，探讨其在排便控便中的作用。方法采用高分辨率多通道胃肠功能检测系统，对经肛巨结肠根治术后有排便障碍来院就诊或能定期来院复查的37例患儿的临床排便功能评分和直肠肛门测压结果进行回顾性分析。结果62．1％临床排便和测压指标正常，10．8％恢复了直肠肛门抑制反射。有排便障碍症状患儿中16．2％直肠肛门动力异常，24．3％直肠感觉阈值有改变，部分病例直肠肛门动力与感觉异常同时存在。结论大多数经肛巨结肠根治术后患儿排便功能良好，直肠肛门动力与感觉功能趋于正常，括约肌功能完好。少数排便功能障碍的原因可能与直肠肛门动力及感觉功能异常有关。

英文摘要：

Objective To study the impact of abnormal anoerectal movement and sensation on defecation function in children with transanal one-stage endorectal pull through operation for Hirschsprung＇s disease （HD）. Methods Thirty seven HD patients underwent transanal one-stage endorectal pull through operation at this center. During follow-up, their anoerectal movement and sensation was studied using high resolution multi-channel detection system of gastrointestinal function and anorectal manometry. Results Of the 17 patients, 62. 1% had normal defecation and normal manometry, and 10. 8 % restored the rectoanal inhibitory reflex after surgery. Of the patients with defecation disorders, 16. 2% had anorectal motility disorders, 24. 3% had abnormal rectal sensation, and the rest patients had both anorectal motility disorders and abnormal rectal sensation thresholds. Conclusions Most HD patients have good defecation function, normal anorectal sensation and motility after transanal onestage endorectal pull through procedure. Defecation disorder is associated with abnormal anorectal motility and sensation.