Objective: The purpose of this study was to investigate temporal correlations between maternal serum placenta growth factor levels and placental perfusion in early human pregnancies. Study design: Systolic umbilical a...Objective: The purpose of this study was to investigate temporal correlations between maternal serum placenta growth factor levels and placental perfusion in early human pregnancies. Study design: Systolic umbilical artery Doppler blood flow velocity indices at fetal and placental insertion sites were measured between 7 and 22 weeks of gestation from normal singleton pregnancies. Maternal serum placenta growth factor levels were determined by enzyme-linked immunosorbent assay. Results: Maternal serum placenta growth factor levels showed an exponential increase at approximately 14 weeks of gestation. Placenta perfusion, as estimated by systolic Doppler blood flow indices, significantly increased with gestational age (P < .000 1). There was a close association between placenta growth factor expression levels and evidence of increased placenta perfusion (P < .033). Conclusion: The significant increase in serum placenta growth factor coincides with the increased perfusion of the maternal/fetal interface at approximately 12 to 14 weeks of gestation. Correlation of placenta growth factor expression and placental perfusion suggests that placenta growth factor may contribute to assuring adequate vascular development/function of the placenta early in gestation.展开更多
妊娠期肝内胆汁淤积症(intrahepatic cholestasis of pregnancy,ICP)是妊娠特有疾病,也是围生儿死亡的重要原因之,而且胎儿死亡迅速,难以预测。本文测定脐动脉收缩期最大血流速率和舒张末期血流速率比值(S/D)、搏动指数(PI)...妊娠期肝内胆汁淤积症(intrahepatic cholestasis of pregnancy,ICP)是妊娠特有疾病,也是围生儿死亡的重要原因之,而且胎儿死亡迅速,难以预测。本文测定脐动脉收缩期最大血流速率和舒张末期血流速率比值(S/D)、搏动指数(PI)和阻力指数(RI)三项脐动脉阻力指标,分析其与围生儿结局的关系。展开更多
文摘Objective: The purpose of this study was to investigate temporal correlations between maternal serum placenta growth factor levels and placental perfusion in early human pregnancies. Study design: Systolic umbilical artery Doppler blood flow velocity indices at fetal and placental insertion sites were measured between 7 and 22 weeks of gestation from normal singleton pregnancies. Maternal serum placenta growth factor levels were determined by enzyme-linked immunosorbent assay. Results: Maternal serum placenta growth factor levels showed an exponential increase at approximately 14 weeks of gestation. Placenta perfusion, as estimated by systolic Doppler blood flow indices, significantly increased with gestational age (P < .000 1). There was a close association between placenta growth factor expression levels and evidence of increased placenta perfusion (P < .033). Conclusion: The significant increase in serum placenta growth factor coincides with the increased perfusion of the maternal/fetal interface at approximately 12 to 14 weeks of gestation. Correlation of placenta growth factor expression and placental perfusion suggests that placenta growth factor may contribute to assuring adequate vascular development/function of the placenta early in gestation.
文摘妊娠期肝内胆汁淤积症(intrahepatic cholestasis of pregnancy,ICP)是妊娠特有疾病,也是围生儿死亡的重要原因之,而且胎儿死亡迅速,难以预测。本文测定脐动脉收缩期最大血流速率和舒张末期血流速率比值(S/D)、搏动指数(PI)和阻力指数(RI)三项脐动脉阻力指标,分析其与围生儿结局的关系。