胎儿生长及体重

输入数值

孕周 = 周天

注：据笔者经验体重百分位数可能造成胎儿生长受限的过度诊断，请结合生长曲线及临床相关情况综合判断

注：胎儿生长曲线采用中国胎儿生长数据（香港中文大学所发表文献）

使用方法：

1.输入孕周后可计算出-2SD/+2SD。

2.输入孕周及测量值后可计算出相应孕周的百分位数
或Z score（SD倍数）。

3.体重估测采用Hadlock公式三（AC/HC/FL）

4.“生成生长曲线”可输入多个孕周的测量值，显示生长趋势

参考文献：

1.	Sahota DS,et al. Fetal crown-rump length and estimation of gestational age in an ethnic Chinese population. Ultrasound Obs Gynecol. 2009;33:157-160.
2.	Leung TN,et al.Fetal biometry in ethnic Chinese biparietal diameter, head circumference, abdominal circumference and femur length.Ultrasound Obstet Gynecol 2008.
3.	Hadlock,et al.Estimation of fetal weight with the use of head, body, and femur measurements. AJOG 1985.
4.	Cheng YKY, et al. Prospective assessment of INTERGROWTH-21st and World Health Organization estimated fetal weight reference curves. Ultrasound Obstet Gynecol. 2018.