Ayangade S O, Okonofua F E
Int J Gynaecol Obstet. 1986 Feb;24(1):35-42. doi: 10.1016/0020-7292(86)90021-4.
The fetal biparietal diameter (BPD) was measured by ultrasound during normal pregnancy in 558 Nigerian women. The range of BPD values for each week of pregnancy from 12 weeks until term (713 measurements) was computed from cross-sectional data. The data were used to illustrate the variation in weekly growth rate according to fetal maturity and head size. The results revealed a curve similar to those reported from Caucasian populations but with much less flexion in the later weeks of pregnancy. The BPD values per week were also less in this study group. The reasons for these differences are discussed.
在558名尼日利亚女性正常孕期通过超声测量胎儿双顶径（BPD）。根据横断面数据计算了从孕12周到足月（713次测量）各孕周的BPD值范围。这些数据用于说明根据胎儿成熟度和头部大小每周生长速率的变化。结果显示出一条与白种人群报道相似的曲线，但在孕期后期弯曲度小得多。该研究组每周的BPD值也较低。讨论了这些差异的原因。
