B超测量晚期妊娠胎儿肝脏大小预测胎儿体重的价值

The value of estimating fetal weight by measurement of FLL and FLT using B-mode ultrasound

目的：探讨B型超声测量晚期妊娠胎儿肝脏长度与厚度之和（FLL and FLT）预测胎儿出生体重的临床价值。方法：应用超声测量378例晚期妊娠胎儿肝脏长度和厚度，计算二者之和，并与新生儿出生体重进行对照分析。结果：胎儿肝脏长度与厚度之和与胎儿出生体重密切相关（r=0.861）。回归方程Y=104X＋641，P〈0.01。胎儿体重2500-4000g，FLL and FLT预测敏感性89％、特异性90％；胎儿体重〉4000g，敏感性90％、特异性92％；胎儿体重〈2500g，敏感性86％、特异性87％。结论：用超声测量胎儿肝脏长度与厚度之和预测胎儿体重的方法简便、数值准确，为临床选择分娩方式提供了可靠依据。

Objective：To investigate the clinical value of using ultrasonic measurement of fetal liver length plus thickness （FLL and FLT） to predict fetal weight. Methods：The fetal liver length plus thickness （FLL and FLT） in 375 fetuses were measured with B-mode ultrasound. Results： There was significant correlation between FLL＋FLT and neonatal birth weight （r=0.861）, Y =104X＋641; When the fetal weight was between 2500g and 4000g, more than 4000g and less than 2500g,the sensi-tivity and specificity of FLL and FLT in prediction of fetal weight were 89% and 90%, 90% and 92%, 86% and 87% respec-tively. Conclusion： Ultrasonic measurement of FLL and FLT can help us understand whether the fetus growth well in uterus and whether the treatments are effective.