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使用装备有实时图像和脉冲波多普勒超声扫描仪,研究两组病人的螺旋动脉多普勒波形。组Ⅰ包括175例无合并症,孕龄从13～25周者,该组对每1例妊娠妇女测量一次螺旋动脉的多普勒血流波形,结果证实胎儿出生体重都适合其孕龄的第10和第90百分位数之间。组Ⅱ选择350例单胎孕妇,以前瞻性研究证实可能发生妊娠高血压综合征(PIH)或小于孕龄儿(SGA)。在孕13～19周和20～25周时,做了两次螺旋动脉扫描试验,以验证在图形的两个时间段中,哪一部分对预测PIH或SGA是最敏感的。出生后体重小于孕龄第10百分位数为有SGA,动脉收缩压>18.7kPa和/或舒张压>12kPa为PIH。
Spiral Doppler waveforms of the two groups of patients were studied using real-time images and pulsed-wave Doppler ultrasound scanners. Group I consisted of 175 patients with no comorbidities and gestational age from 13 to 25 weeks. The Doppler flow waveform of the spiral arteries was measured in each of the 1 pregnant women. The results confirmed that fetal birth weight was suitable for gestational age Between 10 and the 90th percentile. A total of 350 singleton pregnant women were enrolled in the study. Prospective studies confirmed that PIH or SGA may occur. At 13 to 19 and 20 to 25 weeks of gestation, spiral artery scanning tests were performed twice to verify which part of the two periods of the graph were most sensitive to predicting PIH or SGA. Weight at birth less than 10th percentile for gestational age with SGA, systolic blood pressure> 18.7 kPa and / or diastolic blood pressure> 12 kPa for PIH.