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在怀孕中期和晚期基于微血管流量成像的基础上探索胎盘正常血流特征

Chuanfen Gao¹, Chaoxue Zhang², Ying Zhang³

¹Chuanfen Gao, Department of Ultrasound, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province 230022, P.R. China.

Pakistan journal of medical sciences

|July 30, 2025

概括

微血管流 (MV-Flow) 成像显示,随着妊娠年龄的推进,胎盘血流速度增加,正常怀孕的抵抗力下降. 这项技术有助于评估胎儿发育和胎盘健康.

科学领域:

产科和妇科产科和妇科
胎儿医学胎儿医学
医疗成像医学成像

背景情况:

胎盘微血管功能对于正常的胎儿发育至关重要.
评估胎盘血流动力学有助于监测妊娠健康.
微血管流 (MV-Flow) 成像为可视化胎盘血管提供了一种新的方法.

研究的目的:

在妊娠中期和晚期的正常单子妊娠中调查胎盘的微血流特征.
评估微血管流 (MV-Flow) 成像在怀孕期间评估胎盘微血管变化的实用性.

主要方法:

一项回顾性队列研究分析了485例正常单子妊娠 (妊娠22-38周).
微血管流 (MV-Flow) 成像用于评估胎盘微血管.
患者根据妊娠年龄 (22-24W,25-27W,28-30W,31-33W,34-36W,37-39W) 分组.

主要成果:

胎盘微血管检查显示,在怀孕中期到晚期,胎盘微血管检查显示了三级或更高的血流分支.
动脉 (UA) 和中脑动脉 (MCA) 的缩速度 (PSV) 峰值随着妊娠年龄的增加而增加.
对于UA,MCA和静脉管 (DV) 的脉动性指数 (PI) 随着妊娠年龄的增加而下降 (所有P<0.05).
在整个妊娠年龄组中观察到胆管血管树枝PSV和PI的显著差异 (所有P<0.05).
来自MV-Flow的血管指数 (VI^MV) 与妊娠年龄没有显著变化 (P>0.05).

结论:

使用MV-Flow进行的胎盘微血管成像显示,随着怀孕的进展,胎盘内的微血管流速在增加.
MV-Flow成像显示,胎盘血流阻力随着妊娠年龄的增长而逐渐下降.
这些发现表明,MV-Flow是监测正常怀孕中胎盘发育和功能的宝贵工具.

关键词:

在MV-Flow中使用.微小的血液流动.中期和晚期的怀孕期间.胎盘胎盘胎盘胎盘单独怀孕是一个单独怀孕.

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