Asada M
Acta Obstet Gynaecol Jpn. 1981 Jul;33(7):996-1004.
This paper is concerned with the methods and results of fetal growth assessment by using the real-time ultrasono-tomography under our newly systematized flow of the fetal management. The following results were obtained. 1) At early stage of pregnancy gestational age of the fetus may be corrected more precisely with the measurement of fetal crown-rump length (CRL) than diameter of amniotic space. 2) The correlation coefficient between gestational days by BBT base and CRL was 0.990 and standard deviation was +/- 2.3 mm. The error of estimated gestational days was +/- 3 days. 3) With one parameter such as the biparietal diameter (BPD), or the fetal abdominal circumference (FAC), it seems to be difficult to find out abnormal fetal growth from the normal growth at the last stage of pregnancy. 4) The discriminant function [Z = 0.6012 X (BPD) + 3 . 100 X (FAC) - 45.204] was obtained within seven days of delivery in order to find immature and mature neonates. With this equation, the probability for correct diagnosis was 90.4%, and 9 in 10 cases of IUGR were predicted. 5) Using four parameters (BPD, FAC, Gestational age, Uterine length), the predicted birth weights was computed. The correlation coefficient between the predicted birth weights and the actual birth weights was 0.852 and 1 S.D. was +/- 281 gram.
本文关注在我们新系统化的胎儿管理流程下，使用实时超声断层扫描进行胎儿生长评估的方法和结果。获得了以下结果。1）在妊娠早期，通过测量胎儿头臀长度（CRL）比测量羊膜腔直径能更精确地校正胎儿的孕周。2）根据基础体温法得出的孕周与CRL之间的相关系数为0.990，标准差为±2.3毫米。估计孕周的误差为±3天。3）仅使用一个参数，如双顶径（BPD）或胎儿腹围（FAC），在妊娠后期似乎很难从正常生长中发现胎儿生长异常。4）为了区分未成熟和成熟新生儿，在分娩前7天内获得了判别函数[Z = 0.6012×（BPD）+ 3.100×（FAC）- 45.204]。使用该公式，正确诊断的概率为90.4%，10例胎儿宫内生长受限（IUGR）病例中有9例被预测出来。5）使用四个参数（BPD、FAC、孕周、子宫长度）计算预测出生体重。预测出生体重与实际出生体重之间的相关系数为0.852，标准差为±281克。
