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运动员左心室质量增加的正常超声波心肌反射率. 一个组织特征研究的研究
F Lattanzi1, V Di Bello, E Picano
1C.N.R. Institute of Clinical Physiology, University of Pisa, Italy.
Circulation
|May 1, 1992
概括
患有生理性缩的运动员表现出正常的超声波反射,与患有缩性心肌病的患者不同. 定量超声波分析区分运动员与多变性心肌病患者,即使左心室壁厚度相似.
科学领域:
- 心脏病学 心脏病学
- 生物医学超声波 生物医学超声波
- 运动医学 运动医学
背景情况:
- 肌肉心脏超声波集成逆向散射与原蛋白含量相关,并且由于纤维失调导致的过度缩心肌病增加.
- 强度训练导致的生理性缩,为研究心肌组织反射率及其与左心室壁厚度的关系提供了机会.
研究的目的:
- 在有生理性缩的运动员中研究心肌组织反射性.
- 评估运动员的声学特性与左心室壁厚度之间的关系.
- 使用定量超声波分析,区分运动员和患有多变性心肌病的患者.
主要方法:
- 研究了24名年轻男性运动员 (骑自行车,举重运动员) 和10名久坐的对照.
- 在标准测量中使用2D回声心电图.
- 采用在线射频分析的原型来量化心肌壁的集成后向散射 (%IB).
- 运动员与患有超性心肌病的患者进行了比较,患者的隔膜厚度相似.
主要成果:
- 与对照人群相比,运动员的隔膜和后壁厚度增加 (p < 0.01).
- 在运动员和对照人群之间没有观察到对隔膜或后壁的%IB有显著差异.
- 在运动员中,墙壁厚度和心肌反射率之间没有发现相关性.
- 患有缩性心肌病变的患者比运动员显著更高的%IB (p < 0.01).
结论:
- 患有生理左心室缩的运动员表现出正常的定量超声波反射.
- 对反向散射超声波信号的定量分析可以区分运动员和具有类似心肌壁厚度的高性心肌病患者.
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