Persona-Sliwińska A, Brazert J, Biczysko R
Kliniki Połoznictwa i Chorób Kobiecych AM, Poznaniu.
Ginekol Pol. 1998 Sep;69(9):682-92.
To compare resistance index (RI) and pulsatility index (PI) values of blood flow in arteries of uteroplacental circulation in normal and threatened abortion first trimester pregnancies.
We have analysed 36 pregnant woman between 5th and 12th weeks of pregnancy--17 patients with threatened abortion as a test group and 19 patients with normal intrauterine pregnancy taken as controls. In all patients transvaginal ultrasonography with pulse color Doppler was performed. The RI and PI values were calculated for blood flow velocity waveforms obtained from uterine artery and its branches--arcuate, radial and spiral arteries.
In the test group we have analysed 17 flow velocity waveforms from uterine artery (mean RI 0.852; SD 0.080, mean PI 2.324; SD 0.693), 16 from arcuate artery (mean RI 0.638; SD 0.049, mean PI 1.315; SD 0.064,), 17 from radial artery (mean RI 0.638; SD 0.049, mean PI 1.009; SD 0.177) and 15 from spiral artery (mean RI 0.548; SD 0.068, mean PI 0.804; SD 0.160); in controls we have analysed 16 flow velocity waveforms from uterine artery (mean RI 0.866; SD 0.066, mean PI 2.469; SD 0.618), 17 from arcuate artery (mean RI 0.728; SD 0.123, mean PI 1.352; SD 0.362), 19 from radial artery (mean RI 0.630; SD 0.092, mean PI 1.017; SD 0.261) and 16 from spiral artery (mean RI 0.511; SD 0.100, mean PI 0.760; SD 0.202).
There was no significant difference in mean RI and PI values between normal and abnormal pregnancies. A gradual statistically significant decrease of RI and PI values during time of pregnancy we have observed only in radial arteries in both groups. For other vessels in the control group the RI and PI values tended to decrease during the time of pregnancy while in the test group some even rose up.
比较正常与早期先兆流产妊娠子宫胎盘循环动脉血流阻力指数（RI）和搏动指数（PI）值。
我们分析了36例孕5至12周的孕妇——17例先兆流产患者作为试验组，19例正常宫内妊娠患者作为对照组。所有患者均接受经阴道脉冲彩色多普勒超声检查。计算子宫动脉及其分支——弓形动脉、桡动脉和螺旋动脉获得的血流速度波形的RI和PI值。
试验组中，我们分析了17个子宫动脉血流速度波形（平均RI 0.852；标准差0.080，平均PI 2.324；标准差0.693），16个弓形动脉血流速度波形（平均RI 0.638；标准差0.049，平均PI 1.315；标准差0.064），17个桡动脉血流速度波形（平均RI 0.638；标准差0.049，平均PI 1.009；标准差0.177）和15个螺旋动脉血流速度波形（平均RI 0.548；标准差0.068，平均PI 0.804；标准差0.160）；对照组中，我们分析了16个子宫动脉血流速度波形（平均RI 0.866；标准差0.066，平均PI 2.469；标准差0.618），17个弓形动脉血流速度波形（平均RI 0.728；标准差0.123，平均PI 1.352；标准差0.362），19个桡动脉血流速度波形（平均RI 0.630；标准差0.092，平均PI 1.017；标准差0.261）和16个螺旋动脉血流速度波形（平均RI 0.511；标准差0.100，平均PI 0.760；标准差0.202）。
正常与异常妊娠的平均RI和PI值无显著差异。我们仅在两组的桡动脉中观察到妊娠期间RI和PI值有统计学意义的逐渐下降。对照组中其他血管的RI和PI值在妊娠期间有下降趋势，而试验组中一些血管的值甚至上升。
