Krapp M, Denzel S, Katalinic A, Berg C, Germer U, Gembruch U
Division of Prenatal Medicine, Department of Obstetrics and Gynecology, Medical University of Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
Arch Gynecol Obstet. 2002 Nov;267(1):19-22. doi: 10.1007/s00404-001-0260-9.
The measurement of fetal ductus venosus blood flow during labor by means of color Doppler sonography.
26 women between 37 and 41 weeks of gestation were included in the study. At various stages of cervical dilation (<2 cm, 2-4 cm, 6- 8 cm, and fully dilated) blood flow velocity waveforms of the fetal ductus venosus during and between contractions were studied in fetuses with a negative non-stress test. The Pulsatility index for veins (PIV) and the Peak velocity index for veins (PVIV), respectively were calculated off-line. The mean+/-standard deviation between and during contractions were determined for descriptive analysis.
Waveforms were visualized during 139 contractions and 159 episodes of uterine relaxation in 24 of 26 fetuses (92.3%) in normal labor. Three and more waveforms were recorded, in 59.0% during contractions (82/139) and in 57.9% between contractions (92/159), respectively. The mean PIV and PVIV values during contractions were 1.68+/-1.02 and 1.46+/-0.72, respectively. Between contractions the values were 0.49+/-0.21 for the PIV and 0.44+/-0.18 for the PVIV, respectively.
Ductus venosus blood flow can be visualized in labor. Further studies are needed to establish normal values.
采用彩色多普勒超声测量分娩期间胎儿静脉导管血流。
本研究纳入26例妊娠37至41周的女性。在宫颈扩张的不同阶段（<2cm、2 - 4cm、6 - 8cm及完全扩张），对无应激试验阴性的胎儿，研究宫缩期间及宫缩间歇期胎儿静脉导管的血流速度波形。离线计算静脉搏动指数（PIV）和静脉峰值速度指数（PVIV）。确定宫缩期间及宫缩间歇期的均值±标准差进行描述性分析。
26例胎儿中有24例（92.3%）在正常分娩过程中的139次宫缩和159次子宫松弛期观察到波形。分别在59.0%的宫缩期（82/139）和57.9%的宫缩间歇期（92/159）记录到三个及以上波形。宫缩期间PIV和PVIV的均值分别为1.68±1.02和1.46±0.72。宫缩间歇期PIV和PVIV的值分别为0.49±0.21和0.44±0.18。
分娩期间可观察到静脉导管血流。需要进一步研究以确定正常值。
