Prediction of birthweight by fetal ultrasound biometry.
Prediction of birthweight by fetal ultrasound biometry.
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通过胎儿超声生物测量预测出生体重。
DOI：
10.1259/0007-1285-65-779-987
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发表时间：
1992
影响因子：
2.6
通讯作者：
L. Hunt
中科院分区：
文献类型：
--
作者：
D. Nzeh;S. Rimmer;W. M. O. Moore;L. Hunt
共有104名怀孕37周至42周的单胎孕妇在分娩前两周内接受了超声波扫描。测量双顶径(BPD)、腹围(AC)和股骨长度(FL)。采用AC、AC/BPD、AC/FL和AC/BPD/FL四种不同的方法估算胎儿体重。将结果与分娩时的实际出生体重值进行比较。研究中的47名男婴和57名女婴的平均出生体重没有显著差异。EFW(Shepard)法的总体偏差最小，平均百分比误差为1.7%，标准偏差(SD)为10.6%。其他三种方法显著低估了出生体重：EFW(预测值)，平均误差2.2%，SD 9.3%，p<；0.02；EFW(Campbell)，平均误差5.4%，SD 9.5%，p<；0.001；EFW(Hadlock)，平均误差5.6%，SD 9.3%，p<；0.001。每组的误差百分比与扫描交付间隔呈显著负相关(p<；0.001)。生成了两个新的方程，这两个方程结合使用AC、BPD和FL以及扫描交付间隔(SDI)(以天为单位)，对研究中的病例给出了更准确的预测。
A total of 104 women with singleton pregnancies who were delivered between 37 and 42 weeks gestation had ultrasound scans during the fortnight before delivery. The biparietal diameter (BPD), abdominal circumference (AC) and femur length (FL) were measured in all cases. Estimation of fetal weight (EFW) was done by four different methods: using AC alone, AC/BPD, AC/FL and AC/BPD/FL. Results were compared with values of actual birthweights at delivery. There was no significant difference between the mean birthweights of the 47 boy and 57 girl fetuses studied. The EFW(Shepard) method showed the least bias overall: mean percentage error 1.7%, standard deviation (SD) 10.6%. The other three methods significantly underestimated birthweights on average: EFW(Deter), mean error 2.2%, SD 9.3%, p < 0.02; EFW(Campbell), mean error 5.4%, SD 9.5%, p < 0.001; EFW(Hadlock), mean error 5.6%, SD 9.3%, p < 0.001. The percentage error in each group was significantly negatively correlated (p < 0.001) with the scan-delivery interval. Two new equations were generated which gave more accurate predictions for the cases under study using AC, BPD and FL as a combination and also in addition to scan-delivery interval (SDI) in days.