Szunyogh N, Zubor P, Dokus K, Galo S, Visnovsky J, Danko J
Department of Obstetrics and Gynecology, Comenius University, Jessenius Faculty of Medicine, Martin, Slovak Republic.
Int J Gynaecol Obstet. 2006 Oct;95(1):18-23. doi: 10.1016/j.ijgo.2006.05.017. Epub 2006 Jul 7.
To analyze the effects of uterine contractions on ductus venosus (DV) pulsatility during the first stage of labor.
Twenty healthy women were examined. Measurements were taken at three stages of cervical dilatation (<4 cm, 4-7 cm and >or=8 cm) during and between contractions. Peak velocity during ventricular systole (S) and atrial contraction (A), pulsatility index for veins (DV PIV), ductus venosus index (DVI) and the S/A ratio were measured.
The DV was observed successfully in 16 cases. The mean S velocity did not change significantly (64 cm/s during and 65 cm/s between contractions). The mean A velocity decreased significantly from 35 cm/s measured between contractions to 29 cm/s during contractions (P<0.0001). The mean DV PIV and DVI were significantly higher during contractions (0.72 and 0.55) than between contractions (0.57 and 0.45) (P<0.0001). There were no significant differences in means between stages of cervical dilatation.
Significant differences during and between uterine contractions can be observed in DV pulsatility during normal labor.
分析产程第一阶段子宫收缩对静脉导管（DV）搏动性的影响。
对20名健康女性进行检查。在子宫收缩期间及两次宫缩间歇期，于宫颈扩张的三个阶段（<4 cm、4 - 7 cm和≥8 cm）进行测量。测量心室收缩期（S）和心房收缩期（A）的峰值速度、静脉搏动指数（DV PIV）、静脉导管指数（DVI）以及S/A比值。
16例成功观察到DV。平均S速度无显著变化（宫缩期间为64 cm/s，宫缩间歇期为65 cm/s）。平均A速度从宫缩间歇期测量的35 cm/s显著降至宫缩期间的29 cm/s（P<0.0001）。平均DV PIV和DVI在宫缩期间（分别为0.72和0.55）显著高于宫缩间歇期（分别为0.57和0.45）（P<0.0001）。宫颈扩张各阶段的平均值之间无显著差异。
正常分娩过程中，子宫收缩期间及间歇期DV搏动性存在显著差异。
