임신유도성 고혈압산모에서 도플러초음파의 유용성

Abstract

We studied the umbilical and uterine artery blood flow velocity waveforms within 2 weeks of delivery in 355 pregnancies-induced hypertension after 28 weeks of gestation. We measured systolic/diastolic(S/D) ratios and classified the populations into four groups according to the value of the S/D ratios. The first group had normal ratios in both the umbilical and uterine arteries. The second group had elevated umbilical ratios and normal ratios in the uterine arteries. The third group had elevated uterine artery S/D ratios with normal umbilical artery values, and the fourth group had elevated S/D ratios in both vessels. Women in the first group delivered of infant with birth weight of 2787.4+-678.5 gm and gestational age of 37.6+-2.2 weeks. The values for the three groups with abnormal Doppler flow velocity waveform were : those with elevated umbilical ratios and normal ratios in the uterine artery ; birth weight 2103.7+-721.4 gm, gestational age = 35.4+-2.8weeks ; those with elevated uterine artery ratios with normal umbilical artery values ; birth weight=2098.3+-511.7 gm, gestational age = 35.5+-2.4 weeks ; and those with elevated S/D ratios in both vessels ; birth weight = 1589.2+-419.9 gm , gestational age = 2.3 weeks(p=0.0001). The worst perinatal outcome of 92.0% was obtained in those with elevated S/D ratios in both vessels. In this study , we can suggest that Doppler flow velocity waveforms of umbilical and uterine arteries are usefull to predict the pregnancy outcomes of and to make a better treatment protocol for patients with pregnancy induced hypertension.