FUNCTIONAL CHARACTERISTICS OF UTERO-PLACENTAL BLOOD FLOW IN MACROSOMIA

This article provides an in-depth analysis of the functional characteristics of utero-placental blood flow in pregnancies complicated by macrosomia. Changes in uteroplacental hemodynamics, uterine artery blood flow, resistance index, pulsatility index, circulating blood volume, and peripheral perfusion parameters were evaluated. According to the research results, uterine blood flow significantly increases, vascular resistance decreases, and perfusion intensifies under conditions of macrosomia. A moderate positive correlation was identified between circulating blood volume and fetal weight. The data obtained indicate that hemodynamic factors play a significant role in the pathogenesis of macrosomia. Early assessment of uteroplacental blood circulation holds clinical importance in predicting the risk of macrosomia.本文针对合并巨大儿（macrosomia）的妊娠患者，深入剖析其子宫胎盘血流量（utero-placental blood flow）的功能特征。本研究评估了子宫胎盘血流动力学（uteroplacental hemodynamics）、子宫动脉血流量、阻力指数（resistance index）、搏动指数（pulsatility index）、循环血容量及外周灌注参数的变化情况。研究结果显示，在巨大儿妊娠状态下，子宫血流量显著升高、血管阻力降低且灌注水平增强。研究发现循环血容量与胎儿体重呈中度正相关。所得数据表明，血流动力学因素在巨大儿的发病机制中发挥着重要作用。早期评估子宫胎盘血液循环，对预测巨大儿的发病风险具有重要临床价值。