Arulkumaran S, Gibb D M, Lun K C, Heng S H, Ratnam S S
Br J Obstet Gynaecol. 1984 Sep;91(9):843-8. doi: 10.1111/j.1471-0528.1984.tb03694.x.
Uterine activity was studied in 40 multiparous Singapore women of Chinese origin who were in normal labour and had a normal delivery. A catheter tip pressure transducer coupled with a uterine activity integrator was used to quantify uterine activity. Normal labour progress was defined as labour progressing within 2 h to the right of a line drawn on the partogram at 1 cm/h in the active phase of labour. A wide range of activity was observed. The median level of uterine activity rose from 815 kPas/15 min at 3 cm dilatation to 1731 kPas/15 min at 9 cm dilatation with an overall median level of 1130 kPas/15 min. The 10th centile value rose from 430 kPas/15 min at 3 cm dilatation to 923 kPas/15 min at 9 cm dilatation. Profiles of dilatation-specific activity values were constructed. These values were significantly lower than in a comparative group of nulliparous patients. The parous uterus requires to expend significantly less effort to effect normal vaginal delivery than its nulliparous counterpart.
对40名正常分娩的新加坡华裔经产妇的子宫活动情况进行了研究。使用与子宫活动积分仪相连的导管尖端压力传感器来量化子宫活动。正常产程进展定义为在产程活跃期以每小时1厘米的速度在产程图上绘制的线右侧2小时内完成分娩。观察到广泛的活动范围。子宫活动的中位数水平从宫颈扩张3厘米时的815千帕斯卡/15分钟上升到宫颈扩张9厘米时的1731千帕斯卡/15分钟，总体中位数水平为1130千帕斯卡/15分钟。第10百分位数从宫颈扩张3厘米时的430千帕斯卡/15分钟上升到宫颈扩张9厘米时的923千帕斯卡/15分钟。构建了特定扩张阶段活动值的曲线。这些值明显低于未产妇的对照组。经产妇的子宫在实现正常阴道分娩时所需的努力明显少于未产妇。
