Elenskaia Ksena, Thakar Ranee, Sultan Abdul Hameed, Scheer Inka, Beggs Andrew
Croydon University Hospital, 530 London Road, Croydon CR7 7YE, UK.
Int Urogynecol J. 2011 Nov;22(11):1421-7. doi: 10.1007/s00192-011-1501-5. Epub 2011 Jul 26.
The effect of pregnancy and mode of delivery on pelvic floor muscle function (PFMF) is unclear. Our aim was to prospectively evaluate the effect of pregnancy and childbirth on PFMF.
Subjective (Oxford scale) and objective (perineometry) assessments of PFMF were performed at 20 and 36 weeks gestation and at 14 weeks and 12 months after delivery. The resting pressure (RP) and the maximum squeeze pressure (MSP) were recorded.
Four hundred three women (182 nulliparous and 221 multiparous) were recruited. Two hundred ninety-four (73%) delivered vaginally and 92 (23%) by caesarean section. RP and MSP improved significantly (p < 0.01) during pregnancy. After childbirth, a significant decrease in PFMF was demonstrated, which recovered completely by 1 year in majority of women.
There appears to be a physiological increment in PFMF during pregnancy. The pelvic floor weakens temporarily after childbirth but contractility appears to recover by 1 year irrespective of the mode of delivery.
妊娠及分娩方式对盆底肌肉功能（PFMF）的影响尚不清楚。我们的目的是前瞻性评估妊娠和分娩对PFMF的影响。
在妊娠20周和36周时以及分娩后14周和12个月时，对PFMF进行主观（牛津量表）和客观（会阴压力测量）评估。记录静息压力（RP）和最大挤压压力（MSP）。
招募了403名女性（182名未生育女性和221名经产妇）。294名（73%）经阴道分娩，92名（23%）行剖宫产。妊娠期间RP和MSP显著改善（p < 0.01）。分娩后，PFMF显著下降，大多数女性在1年内完全恢复。
妊娠期间PFMF似乎有生理性增加。分娩后盆底会暂时变弱，但无论分娩方式如何，收缩力似乎在1年内恢复。
