Obeid S A, Zidan H, Hassab M A
Dis Colon Rectum. 1979 Jul-Aug;22(5):342-5. doi: 10.1007/BF02609322.
Anal sphincteric pressure studies of patients with complete rectal prolapse demonstrated that: 1) The resting yield pressure of the internal anal sphincter in patients with complete rectal prolapse was not significantly different from that of control subjects. Thus, it seems to have no role in the etiology of prolapse. 2) The maximal sphincteric pressure of the external anal sphincter was significantly less in patients with prolapse than in controls. This suggested weakness in the effective functional power of the external anal sphincter in complete prolapse. 3) Anal continence could be achieved by the ability to maintain full contraction of the external anal sphincter for more than 40 seconds, which was the minimum for control subjects. Incontinent patients could not do this.
1）完全性直肠脱垂患者的肛门内括约肌静息屈服压力与对照组无显著差异。因此，它似乎在脱垂病因中不起作用。2）脱垂患者的肛门外括约肌最大收缩压明显低于对照组。这表明完全性脱垂患者肛门外括约肌的有效功能力量较弱。3）通过能够使肛门外括约肌持续完全收缩超过40秒可实现肛门节制，这是对照组的最低标准。失禁患者无法做到这一点。
