Arulkumaran S, Gibb D M, Ratnam S S, Lun K C, Heng S H
Br J Obstet Gynaecol. 1985 Jul;92(7):693-7. doi: 10.1111/j.1471-0528.1985.tb01450.x.
Uterine activity was studied during labour induced using an automatic infusion system (AIS) or a peristaltic infusion pump (IVAC) to administer oxytocin. In the 110 patients who achieved vaginal delivery the total uterine activity required to effect full dilatation of the uterine cervix was found to vary according to parity and cervical score but not according to mode of oxytocin infusion. Irrespective of whether the uterine activity level per 15 min was maintained at between 700 and 1500 kPas or at between 1500 and 2000 kPas, the total uterine activity was similar the lower levels being compensated for by a longer duration. Fetal outcome, in terms of 1- and 5-min Apgar scores and umbilical vein blood pH, was unaffected by the level of uterine activity. The cervical and pelvic tissue resistance varies according to parity and cervical score and the uterus has to achieve a certain total uterine activity in induced labour which is best achieved by maintaining optimal uterine activity levels of 1500-2000 kPas/15 min to effect vaginal delivery of the baby in good condition in optimal time.
使用自动输液系统（AIS）或蠕动输液泵（IVAC）静脉滴注缩宫素引产时，对子宫活动情况进行了研究。在110例经阴道分娩的患者中，发现使宫颈完全扩张所需的总子宫活动量因产次和宫颈评分而异，但与缩宫素输注方式无关。无论每15分钟的子宫活动水平维持在700至1500千帕斯卡之间还是1500至2000千帕斯卡之间，总子宫活动量相似，较低水平可通过较长持续时间来补偿。就1分钟和5分钟阿氏评分以及脐静脉血pH值而言，胎儿结局不受子宫活动水平的影响。宫颈和盆腔组织阻力因产次和宫颈评分而异，在引产过程中子宫必须达到一定的总子宫活动量，通过将子宫活动水平维持在1500 - 2000千帕斯卡/15分钟的最佳水平，才能在最佳时间使胎儿顺利经阴道分娩。
