在心肺运动测试期间心力衰竭患者的心脏声学生物标志物:一项探索性研究
Kiyoshi Iida1, Masakazu Matsuzaki1, Osamu Saito2
1Department of Cardiology, Nihon University Hospital, Japan.
Internal medicine (Tokyo, Japan)
|February 12, 2024
概括
使用心脏声学生物标志物 (CAB) 的新方法可以在没有复杂气体分析的情况下确定心力衰竭 (HF) 患者的无氧值 (AT). 这种更简单的方法与传统方法有显著的相关性,有助于运动处方.
科学领域:
- 心脏病学 心脏病学
- 运动生理学 运动生理学
- 生物医学工程 生物医学工程
背景情况:
- 运动治疗对于慢性心力衰竭 (HF) 心脏康复至关重要.
- 处方运动强度依赖于无氧值 (AT),通常通过昂贵而复杂的心肺运动测试 (CPX) 和气体分析来测量.
- 需要一种更简单,非侵入性的方法来确定HF患者的AT.
研究的目的:
- 在HF患者中,研究传统CPX (CPX-AT) 确定的AT和心脏声学生物标志物 (CAB-AT) 确定的AT之间的关系.
- 探索声心谱的潜力,以简化AT评估.
主要方法:
- 40名HF患者接受了两次症状有限的CPX测试.
- 三名医生使用标准气体分析 (CPX-AT) 来确定AT.
- 心脏声学生物标志物 (CABs),包括心脏声音强度和电机械激活时间,在CPX期间记录用于CAB-AT计算.
主要成果:
- 在CPX-AT和CAB-AT之间观察到显著的正相关性 (R=0.70,p<0.001),该相关性是使用S1强度和心率的双倍积计算的.
- 仅从S1强度获得的CAB-AT也与CPX-AT有很强的相关性 (R=0.71,p<0.001).
结论:
- 心脏声学生物标志物提供了一种有希望的,非侵入性的方法来确定HF患者的厌氧值.
- 这种方法可以简化心脏康复的运动处方,减少对复杂气体分析的依赖.
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