Uerpairojkit B, Charoenvidhya D, Manotaya S, Tanawattanachareon S, Wacharaprechanont T, Tannirandorn Y
Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
J Med Assoc Thai. 2001 Jun;84 Suppl 1:S346-51.
We developed a nomogram for transverse cerebellar diameter (TCD) in Thai fetuses by recruitment of 153 normal pregnant women in the first trimester. The gestational age calculated by the certain last menstrual period and the first trimester ultrasound were in agreement. The pregnant women were stratified into 4 groups and scanned at four weekly intervals: group A was first scanned at 14 weeks, group B at 15 weeks, group C at 16 weeks, and group D at 17 weeks. A total of 699 measurements from 14 to 40 weeks of gestation were obtained. The data were analyzed for mean and standard deviation; and the best fit mathematical model was derived. The TCD grew progressively along gestational age. The growth rate was slightly less than that of a Western study after 28 weeks of gestation. This could serve as the basis for gestational dating in fetuses with aberrant fetal growth.
我们通过招募153名孕早期的正常孕妇，为泰国胎儿的小脑横径（TCD）制定了一个列线图。根据末次月经日期确定的孕周与孕早期超声检查得出的孕周一致。孕妇被分为4组，每隔四周进行一次扫描：A组在14周时首次扫描，B组在15周，C组在16周，D组在17周。共获得了妊娠14至40周期间的699次测量数据。对数据进行了均值和标准差分析，并得出了最佳拟合数学模型。TCD随孕周逐渐增长。妊娠28周后，其生长速度略低于一项西方研究。这可为胎儿生长异常的孕周确定提供依据。
