Objective To analyse the relationship between parameters of gravida and fetal birth weight, and derive the formula of estimated fetal weight ( EFW ). 目的分析孕妇产前检查各参数与新生儿出生体重的关系,并推导出预测体重公式。
( 2 ) The estimated fetal weight : fetal weight by B-mode ultrasound corresponding to rate of delivery fetal weight by 73.6 %. 预测胎儿体重:B型超声预测体重与出生体重符合率为73.63%。
In the clinical obstetric examination, the estimated fetal weight ( EFW ) derived from ultrasonic measurements of fetal parts is one of important indices to estimate the fetal outcome. 临床产科检查中,通过超声成像测量胎儿各径线长度从而预测胎儿体重是衡量胎儿宫内生长发育的重要指标之一。
Objective To determine the fetal position, if the cord around neck or prolapse estimated the fetal weight, position and maturity of placenta and the quantity of amniotic fluid with B-ultrasounic detector. 目的产前应用B超确定胎方位,查清臀位类型,预测胎儿体重,了解有无脐带绕颈及脱垂,了解胎儿成熟度及羊水量以便计划分娩,保证母婴安全。
( Results ) The estimated fetal weights were closely related to the birth weight ( P < 0.000 1 ). 结果估计体质量与实际出生体质量密切相关(P<0.0001);