Department of General Surgery, University Hospital of South Manchester NHS Foundation Trust, UK.
Colorectal Dis. 2010 Sep;12(9):880-4. doi: 10.1111/j.1463-1318.2009.01875.x. Epub 2009 Apr 10.
Anal manometry is an established assessment tool for patients with faecal incontinence. Fatigue rate index (FRI) has been shown to discriminate between symptomatic patients and controls. The aim of this study was to compare manometry and fatigability of the anal canal in nulliparous women before and after childbirth.
An air-filled manometry device was used to record maximum resting and squeeze pressures, fatigue rate (recorded over 20 s) and FRI. Recordings were made before and after vaginal delivery.
Nineteen women were studied. Resting anal canal pressure was not significantly different before and after delivery (57.1 +/- 13.6 vs 51.1 +/- 11.9 cmH(2)O, P = 0.1). Squeeze pressure was significantly lower postpartum (106.5 +/- 43.6 vs 75.5 +/- 45.6 cmH(2)O, P < 0.001). Fatigue rate was significantly reduced postpartum (-129.5 +/- 74.7 vs-76.1 +/- 54.8 cmH(2)O/min, P = 0.001), but FRI was not significantly altered (1.23 +/- 1.49 vs 1.41 +/- 1.27 min, P = 0.09).
Maximal squeeze pressure and fatigue rate of the anal canal are significantly reduced after childbirth. Resting anal canal pressure and FRI are not significantly different.
肛门测压是评估粪便失禁患者的一种既定评估工具。疲劳率指数（FRI）已被证明可区分有症状的患者和对照者。本研究的目的是比较未产妇分娩前后肛门管的测压和疲劳性。
使用充气式测压设备记录最大静息和收缩压、疲劳率（记录 20 秒）和 FRI。在阴道分娩前后进行记录。
研究了 19 名女性。分娩前后静息肛门管压力无显著差异（57.1±13.6 与 51.1±11.9cmH₂O，P=0.1）。产后收缩压明显降低（106.5±43.6 与 75.5±45.6cmH₂O，P<0.001）。产后疲劳率明显降低（-129.5±74.7 与-76.1±54.8cmH₂O/min，P=0.001），但 FRI 无明显变化（1.23±1.49 与 1.41±1.27min，P=0.09）。
分娩后肛门管的最大收缩压和疲劳率明显降低。静息肛门管压力和 FRI 无显著差异。
