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本文对259例孕妇在不同孕周,用B型超声仪测定胎盘成熟度415人次。发现随着孕周的增长,正常孕妇的胎盘有相应的发育成熟变化。按胎盘的成熟程度,可分为0～Ⅱ度。当胎盘达Ⅰ或Ⅱ度时,娩出的新生儿基本上已成熱,胎盘成熟度与胎儿成熟度之间密切相关。根据110例胎盘病理检查和90例胎盘X线摄片结果,发现眙盘成熟过程中超声显象的特征性改变是由于胎盘组织内钙质沉积的逐渐增加及进入胎盘小叶的母体动脉射流的逐渐增强所产生的。在孕毒症等异常妊娠时,胎盘钙化程度增加,超声检查时显示有提早成熟的倾向。临床上可通过B型超声检查测定胎盘成熟度,用以纠正胎龄,判定胎儿成熟度和胎盘功能状态,以监护高危妊娠,决定适宜的分娩时间和分娩方式。
In this paper, 259 pregnant women in different gestational age, with a B-type ultrasound measured placental maturity of 415 people. Found that with the growth of gestational age, normal pregnant women have the corresponding placenta maturity changes. According to the maturity of the placenta, can be divided into 0 ~ Ⅱ degrees. When the placenta reaches I or II degrees, the delivered newborn is essentially already hot, and there is a close correlation between placental maturity and fetal maturity. Based on 110 placental pathologic findings and 90 placenta radiographs, it was found that the characteristic changes of the sonographic findings during the maturation of the pomfret dish are due to the gradual increase of calcium deposition in the placenta tissue and the gradual escaping of the maternal arterial jet into the placental lobule Enhance the resulting. In pregnancy and other abnormal pregnancy, placental calcification increased, ultrasound showed a tendency to mature earlier. Clinically, by B-mode ultrasound examination of placental maturity, to correct gestational age, determine the fetal maturity and placental function status, in order to monitor the high-risk pregnancy, determine the appropriate delivery time and mode of delivery.