【摘要】 目的:研究妊高症(PIH)胎儿下腔静脉前负荷指数(preload index of inferior vena cava,PLI-IVC)的变化与意义。方法:80例孕妇(孕龄28周～42周)行常规超声检查后,对胎儿下腔静脉行多普勒超声检查,测量心室收缩期峰值(S)、心室舒张期峰值(D)和心房收缩期峰值(A),计算PLI-IVC即|A|/(S+D)。实验分为正常对照组和PIH组各40例,皆按孕周再分2组(28周～36周组与37周～42周组)。结果:胎儿下腔静脉多普勒血流频谱图为三相型:大"s"波、小"d"波和反向"a"波。对照组PLI-IVC在妊娠晚期较中期明显降低(P<0.05);PIH组PLI-IVC显著高于相应的对照组(P<0.05),且妊娠晚期较中期显著升高(P<0.05)。结论:多普勒超声检测的PIH胎儿PLI-IVC显著增高,有助于胎儿心功能评价及围产期并发症的预测。更多还原

【Abstract】 Objective:To study the changes and significance of the preload index of inferior vena cava(PLI-IVC) of fetuses in pregnancy-induced hypertension(PIH).Methods: Eighty pregnant women with gestational age of 28-42 weeks were examined by common ultrasonography,and the IVC were investigated by duplex Doppler ultrasonography.The PLI-IVC was calculated as |A|/(S+D).These women were randomly divided into control group(n=40) and PIH group(n=40),and each group was further divided into two subgroups: medial gestational age subgroup(28-36 weeks) and late gestational age subgroup(37-42 weeks).Results: The Doppler flow spectrum of fetal IVC compromised three phases,i.e,big "s",small "d" and reverse "a".In the control group,the PLI-IVC in late gestational age subgroup was significantly lower than that in medial gestational age subgroup(P<0.05).The PLI-IVC in PIH group was significantly higher than that in control group(P<0.05),especially in the late gestational age subgroup(P<0.05).Conclusion: It is useful to investigate the fetal PLI-IVC by duplex Doppler ultrasonography for assessment of fetal heart function and prediction of complications during perinatal period in PIH.更多还原