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高危妊娠可加速早产儿肺和脑组织的成熟已为许多研究报告所证实。Hadi报告慢性宫内窘迫之早产儿,大脑半球脑沟、脑回、脑裂解剖上均显示成熟度加速。近来Baylor医学院应用胎儿晶体前血管膜的消失来判断新生儿27至34周孕期的胎龄。结果表明胎龄和晶体前血管膜的分度无明显相关现象(r=0.877,t=18.1,P<0.001)。作者用晶体前血管膜消失判断胎龄。是否新生儿晶体前血管膜依次萎缩可作为判断慢性胎儿窘迫加速晶体前血管膜发育的评价标准。材料与方法两年间将27～34周胎龄之180名新生儿作为观察对象。胎龄以母月经史为依据。若经期不正常则以早期超声检查来决定胎龄。每例生后均
High-risk pregnancy can accelerate the maturation of lung and brain tissue in preterm infants have been confirmed by many reports. Hadi reported that chronic uterine distress in preterm infants, cerebral hemispheric sulci, brain back, brain crack dissection showed accelerated maturity. Baylor School of Medicine recently estimated the disappearance of the pre-fetal vasculature to assess gestational age at 27-34 weeks of gestation. The results showed that there was no significant correlation between gestational age and the index of the anterior lens vessel (r = 0.877, t = 18.1, P <0.001). The authors used the former film to determine the disappearance of gestational age fetal membranes. Whether the neovascularization of the anterior vasculature in turn may be used as a criterion for judging the development of the anterior lens capsule in chronic fetal distress. MATERIALS AND METHODS Two hundred and seventy newborns with gestational age of 27-34 weeks were enrolled in this study. Gestational age based on the history of mother. If menstrual abnormalities are based on early ultrasound to determine gestational age. Every case after birth