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Updated: Jun 7, 2025

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Murine Fetal Echocardiography
Published on: February 15, 2013
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在正常怀孕中心血管适应2D和3D心声学,斑点跟踪和放射性动脉度学
Tasneem Z Naqvi1,2, Meena Narayanan1, Reza Rafie1
1The Cardiac Non Invasive Laboratories, Division of Cardiology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
JACC. Advances
|November 18, 2024
概括
怀孕期间的心血管适应包括心率和腔体积的增加,以及增强的收缩性和减少后负载,确保有效的功能. 这些变化支持怀孕的需求,先进的成像技术提供了新的见解.
科学领域:
- 心脏病学 心脏病学
- 产科 产科 产科 产科 产科
- 生理学 生理学 生理学
背景情况:
- 在正常怀孕中使用先进技术进行全面的心血管评估的数据有限.
- 了解这些变化对于母亲和胎儿的健康至关重要.
研究的目的:
- 为了评估正常怀孕中的心血管变化.
- 在健康的孕妇中使用二维/三维 (3D) 心声学和平面化度.
主要方法:
- 雇佣了2D/多普勒,斑点跟踪应变,3D心声回声和平面度计.
- 测量是在第一,第二和第三个季度以及分娩后进行的.
- 包括45名健康的女性,主要是西班牙裔族裔.
主要成果:
- 与产后相比,在妊娠三季度观察到心率增加,左心室 (LV) 和右心室 (RV) 体积增加,以及心脏输出量增加.
- 在LV和RV纵向应变率 (SR),心房SR和心房体积中发现了显著的变化.
- 发现肺静脉缩填充速度和LV喷射持续时间增加,而中央大动脉压力增加减少.
结论:
- 怀孕诱导了高效的心血管适应,其特点是所有四个心脏腔室的收缩性增加.
- 增加的LV喷射持续时间和减少的LV后负载有助于管理增加的腔体积和心率.
- 先进的成像技术揭示了正常怀孕期间的动态心血管调整.
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