Tannirandorn Y, Witoonpanich P
Department of Obstetrics & Gynaecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
J Med Assoc Thai. 1993 Aug;76(8):436-40.
Uterine activity was studied in 35 nulliparous Thai women who were in the active phase of spontaneous labour, and who were delivered vaginally without supplementary oxytocin or assisted delivery. A catheter-tip pressure transducer coupled with a uterine activity integrator was used to measure and quantitate uterine activity. Progression of normal labour was defined as labour progressing along the Friedman's curve in the active phase. In nulliparous Thai women, the minimum level of uterine activity likely to be associated with labour progress was 322 kPas/15 min at 3 cm cervical dilatation. The mean and median levels in the active phase of normal labour were 1,075.6 and 952.0 kPas/15 min, respectively. There was a weak correlation (R = 0.3) between an increasing cervical dilatation and uterine activity.
对35名处于自然分娩活跃期、未经补充催产素或助产而经阴道分娩的泰国未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测量和量化子宫活动。正常分娩进展定义为在活跃期沿弗里德曼曲线进展的分娩。在泰国未产妇中，宫颈扩张3厘米时，可能与分娩进展相关的子宫活动最低水平为322千帕斯卡/15分钟。正常分娩活跃期的平均水平和中位数水平分别为1075.6千帕斯卡/15分钟和952.0千帕斯卡/15分钟。宫颈扩张增加与子宫活动之间存在弱相关性（R = 0.3）。
