BACKGROUND： Small for gestational age （SGA） has high frequency which increases the risk of long-term adverse outcomes. Thus the aim of this study was to evaluate peak systolic velocity Doppler of middle cerebral ar...BACKGROUND： Small for gestational age （SGA） has high frequency which increases the risk of long-term adverse outcomes. Thus the aim of this study was to evaluate peak systolic velocity Doppler of middle cerebral artery （MCA） in SGA fetus in order to find appropriate method to diagnosis SGA sooner. MATERIALS and METHODS： This prospective longitudinal study was conducted on 90 pregnant women with a diagnosis of SGA fetus and 90 pregnant women with normal fetus. Then MCA and umbilical artery assessment were performed for all subjects and compared between two groups. RESULTS： Doppler assessment showed that umbilical artery PI was significantly higher in SGA group as compared to normal group （1.114-0.37 vs 0.984-0.18, P = 0.003）, while MCA PI was significantly lower in SGA group （1.77±0.44 vs 1.92±0.47, P = 0.028）. On the other hand, PSV did not differ between the groups （P = 0.592）. Moreover, we found that PSV was more in SGA group by grouping maternal age （〈 27 years） （P = 0.006）, and gestational age （〉 34 weeks） （P 〈 0.001）. CONCLUSION： The results of this study suggest that MCA PI decreased significantly in SGA fetuses, while UA PI increased in this group. Moreover, PSV increased in this group when evaluated in different subgroups （based on maternal age and gestational age）.展开更多
文摘BACKGROUND： Small for gestational age （SGA） has high frequency which increases the risk of long-term adverse outcomes. Thus the aim of this study was to evaluate peak systolic velocity Doppler of middle cerebral artery （MCA） in SGA fetus in order to find appropriate method to diagnosis SGA sooner. MATERIALS and METHODS： This prospective longitudinal study was conducted on 90 pregnant women with a diagnosis of SGA fetus and 90 pregnant women with normal fetus. Then MCA and umbilical artery assessment were performed for all subjects and compared between two groups. RESULTS： Doppler assessment showed that umbilical artery PI was significantly higher in SGA group as compared to normal group （1.114-0.37 vs 0.984-0.18, P = 0.003）, while MCA PI was significantly lower in SGA group （1.77±0.44 vs 1.92±0.47, P = 0.028）. On the other hand, PSV did not differ between the groups （P = 0.592）. Moreover, we found that PSV was more in SGA group by grouping maternal age （〈 27 years） （P = 0.006）, and gestational age （〉 34 weeks） （P 〈 0.001）. CONCLUSION： The results of this study suggest that MCA PI decreased significantly in SGA fetuses, while UA PI increased in this group. Moreover, PSV increased in this group when evaluated in different subgroups （based on maternal age and gestational age）.
文摘目的建立应用超声多谱勒技术测量各孕周胎儿大脑中动脉峰值血流速度(middle cerebral artery peak systolic velocity,MCV-PSV)的正常值。方法对1197例次的胎儿进行各孕周大脑中动脉峰值血流速度进行测量,计算中位数,百分位数,1.5倍中位数(multiples of the median,MOM表示)。结果胎儿大脑中动脉峰值血流速度随着孕周增加而升高。结论利用这不同孕周正常值数据,算出1.5倍中位数值作为判断胎儿宫内贫血状态的指标。
