Clinical Significance Of Fetal Weight Estimation By Modiefied Uterine Fundal Height

Objective To investigate the accuracy of fetal weight estimation by modiefied uterine fundal height.Methods Five hundreds and forty-seven pregnant women admitted to maternity ward of The Second Affiliated Hospital of Chongqing Medical University from December 1,2013 to April 30,2014 with childbirth were chosen as the subject. The modiefied uterine fundal height were measured by the Uterus Inclination and Modiefied Fundal Height Admeasuring Apparatus, normal uterine fundal heightand and abdomen circumference were measured by tape. The fetal weight was estimated by utilizing modiefied uterine fundal height and normal uterine fundal height with clinical commonly used formula of empirical formulas、Yuan’s、Zhuo’s、 Lin’s、Zen’s、Gu’s, respectively. And collect prenatal ultrasound measurement parameter calculation of fetal weight.Then the accordance of estimated fetal weight (EFW) to the actual fetal weights after delivery was calculated. The accuracy rate of fetal weight estimation by utilizing modiefied uterine fundal height、normal uterine fundal height and ultrasound was analyzed.Result The modiefied fundal height is (31.7±2.30) cm, which is significantly higher than that normal fundal height (34.7±2.46) cm (t=54.25, P<0.01). The accuracy rate of modiefied uterine fundal height for fetal weight estimation with empirical formulas, Yuan’s、Zhuo’s、Lin’s、 Zen’s、Gu’s were 68.4%、69.7%、59.4%、67.8%、69.3%、78.4%, respectively. The accuracy rate of normal uterine fundal height for fetal weight estimation with the same formulas were 53.4%、34.4%、54.3%、 46.1%、38.8%、45.9%, respectively. The accuracy rate of modiefied uterine fundal height for fetal weight estimation with empirical formulas、Yuan’s、Lin’s、Zen’s、Gu’s were significantly higher than that of utilizing normal uterine fundal height estimation with the same formulas (P<0.01). The accuracy rate of ultrasound for fetal weight estimation was 72%,is significantly higher than that of utilizing modiefied uterine fundal height for fetal weight estimation with Gu’s formulas (P<0.05)Conclusions Modiefied uterine fundal height has better accuracy in estimating fetal weight, it has a important clinical significance.