应用子宫高度直线回归方程法监测双胎妊娠时胎儿发育

Detection of Intrauterine Fetal Growth of Twins

目的探讨如何利用子宫高度（宫高）监测双胎妊娠胎儿宫内的发育情况。方法采用随机配对的原则，选择７５对双胎和单胎妊娠的孕妇，在校正单胎妊娠的宫高后进行直线回归检验。结果在胎儿同步发育的情况下，双胎妊娠与单胎妊娠的宫高关系为：ｙ＝１．２６ｘ＋１．３（Ｒ２＝０．６５６，ｒ＝０．８１，Ｐ＜０．００１），回归系数１２６，与理论值３２十分接近。并根据回归方程，制定了一个单胎妊娠与双胎妊娠不同孕周的宫高预测值表。结论利用双胎妊娠与单胎妊娠之间的宫高关系，可以监测双胎妊娠宫内胎儿发育情况。

Objective To investigate how to detect intrauterine fetal growth of twins with height of uterine fundus. Methods This study was a randomized coupling trial. 75 couples of twins and single gestation were involved. Linear regression analysis was made after correcting the uterine height of single gestation. Results If each of twins develops as the same as single gestation, the relationship in uterine height between twins and single gestation can be described as a correlation equation: y=1.26x+1.3 ( R 2=0.656, r=0.81, P<0.001). The regression coefficient is 1.26, which is very closed to 32. According to the correlation equation, we made a table to forecast the uterine height of twins and single gestation in different gestational age. Conclusion The ralationship in the uterine height between twins and single gestation can be used to predict intrauterine fetal growth of twins.