Wladimiroff J W, Bloemsma C A, Wallenburg H C
Obstet Gynecol. 1978 Sep;52(3):285-8.
Data on consecutive measurement of fetal biparietal diameter (BPD) and fetal chest area in 42 normal weight infants (birthweight 10--90th percentile) and 30 large-for-dates (birthweight above the 90th percentile) are presented. Pregnancy duration varied from 32 to 40 weeks. In the normal weight group fetal BPD and chest area were above the 95th percentile fo the normal curve in 7% and 5% of the cases; in the large-for-dates group the figures were 7% and 47%. Head to chest ratio fell below the fifth percentile of the normal curve in 53% of the large-for-dates against only 2% of the normal weight infants. In the detection of the large-for-dates infant ultrasonic measurement of fetal chest area appears to be superior to ultrasonic measurement of fetal BPD.
本文呈现了42名正常体重婴儿（出生体重在第10至90百分位数之间）和30名大于胎龄儿（出生体重高于第90百分位数）的胎儿双顶径（BPD）和胎儿胸部面积的连续测量数据。孕期从32周到40周不等。在正常体重组中，7%的病例胎儿BPD和5%的病例胎儿胸部面积高于正常曲线的第95百分位数；在大于胎龄儿组中，这两个数字分别为7%和47%。53%的大于胎龄儿头胸比低于正常曲线的第五百分位数，而正常体重婴儿中这一比例仅为2%。在检测大于胎龄儿时，超声测量胎儿胸部面积似乎优于超声测量胎儿BPD。
