Aggarwal Navita, Sharma G L
Department of Anatomy, All India Institute of Medical Sciences, Bathinda, Punjab, India.
Department of Radiodiagnosis and Imaging, Adesh Institute of Medical Sciences and Research, Bathinda, Punjab, India.
Indian J Radiol Imaging. 2020 Apr-Jun;30(2):149-155. doi: 10.4103/ijri.IJRI_287_19. Epub 2020 Jul 13.
Fetal biometry, with the help of ultrasonography (USG) provides the most reliable and important information about fetal growth and well-being. Frequently used parameters for fetal measurements by this method are the biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL). These fetal dimensions depend upon the racial demographic characteristics, nutrition, genetics and many more environmental factors of a particular population.
The purpose of the present investigation was to define and analyze these fetal biometric parameters in our local population and to compare them with the given norms.
This cross-sectional study with convenience sampling was conducted on a total of 425 fetuses with a period of gestation between 18 to 38 weeks. Descriptive statistics was used to calculate the mean with standard deviation and 95% confidence interval (CI) for each fetal parameter in each gestational week.
Mean of BPD and FL in our population are similar to the mean values given by Hadlock throughout the pregnancy, except near the end of the third trimester where our population shows a slightly lower range of mean values. HC and AC fall below the lower range of Hadlock as early as 24 weeks of pregnancy.
Fetal biometric parameters in the studied population are at the lower range of established nomograms by Hadlock on white fetuses, more so with the progression of pregnancy.
借助超声检查（USG）进行的胎儿生物测量可提供有关胎儿生长和健康状况的最可靠且重要的信息。通过这种方法进行胎儿测量时常用的参数有双顶径（BPD）、头围（HC）、腹围（AC）和股骨长度（FL）。这些胎儿尺寸取决于特定人群的种族人口统计学特征、营养、遗传以及更多环境因素。
本研究的目的是确定并分析我们当地人群中的这些胎儿生物测量参数，并将其与给定的标准进行比较。
本横断面研究采用方便抽样法，对总共425例孕周在18至38周之间的胎儿进行了研究。使用描述性统计方法计算每个孕周各胎儿参数的均值、标准差和95%置信区间（CI）。
在整个孕期中，我们人群中BPD和FL的均值与哈德洛克给出的均值相似，但在孕晚期接近尾声时，我们人群的均值范围略低。早在怀孕24周时，HC和AC就低于哈德洛克标准的下限范围。
研究人群中的胎儿生物测量参数处于哈德洛克针对白人胎儿制定的标准曲线的较低范围，且随着孕周增加愈发明显。
