首页> 外文期刊>American Journal of Obstetrics and Gynecology >The fetal cardiovascular response to increased placental vascular impedance to flow determined with 4-dimensional ultrasound using spatiotemporal image correlation and virtual organ computer-aided analysis
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The fetal cardiovascular response to increased placental vascular impedance to flow determined with 4-dimensional ultrasound using spatiotemporal image correlation and virtual organ computer-aided analysis

机译:使用时空图像相关性和虚拟器官计算机辅助分析方法,通过4维超声确定胎儿对胎盘血管对血流阻抗增加的心血管反应

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Objective: We sought to determine if increased placental vascular impedance to flow is associated with changes in fetal cardiac function using spatiotemporal image correlation and virtual organ computer-aided analysis. Study Design: A cross-sectional study was performed in fetuses with umbilical artery pulsatility index >95th percentile (abnormal [ABN]). Ventricular volume (end-systole, end-diastole), stroke volume, cardiac output (CO), adjusted CO, and ejection fraction were compared to those of 184 normal fetuses. Results: A total of 34 fetuses were evaluated at a median gestational age of 28.3 (range, 20.6-36.9) weeks. Mean ventricular volumes were lower for ABN than normal cases (end-systole, end-diastole) with a proportionally greater decrease for left ventricular volume (vs right). Mean left and right stroke volume, CO, and adjusted CO were lower for ABN (vs normal) cases. Right ventricular volume, stroke volume, CO, and adjusted CO exceeded the left in ABN fetuses. Mean ejection fraction was greater for ABN than normal cases. Median left ejection fraction was greater (vs right) in ABN fetuses. Conclusion: Increased placental vascular impedance to flow is associated with changes in fetal cardiac function. ? 2013 Mosby, Inc.
机译:目的:我们试图通过时空图像相关性和虚拟器官计算机辅助分析来确定胎盘血管对血流的阻抗增加是否与胎儿心脏功能的改变有关。研究设计:对脐动脉搏动指数大于95%(异常[ABN])的胎儿进行了横断面研究。将心室容积(收缩末期,心脏舒张末期),中风量,心输出量(CO),调整后的CO和射血分数与184名正常胎儿的心律进行比较。结果:共评估了34名胎儿,其平均胎龄为28.3周(范围20.6-36.9)。 ABN的平均心室容积比正常病例(收缩末期,舒张末期)低,而左心室容积的下降成正比(相对于右)。对于ABN(与正常)病例,平均左,右中风量,CO和调整后的CO较低。 ABN胎儿的右心室容积,中风量,CO和调整后的CO超过左侧。 ABN的平均射血分数大于正常情况。在ABN胎儿中,左侧射血分数中位数较大(相对于右侧)。结论:胎盘血管流动阻力增加与胎儿心脏功能改变有关。 ? 2013 Mosby,Inc.

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