肺高通胀和左心室质量:动脉样硬化多民族研究COPD研究研究
Benjamin M Smith1, Steven M Kawut, David A Bluemke
1Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
Circulation
|March 16, 2013
概括
慢性阻塞性肺病 (COPD) 的剩余肺体积增加与左心室 (LV) 质量增加有关. 这一发现突出了与COPD患者肺部膨胀相关的潜在心血管风险.
科学领域:
- 心脏病学 心脏病学
- 肺部病理学 肺部病理学
- 医疗成像医学成像
背景情况:
- 左心室 (LV) 质量是心力衰竭和心血管死亡率的关键预测因素.
- 没有完全理解LV质量的决定因素.
- 慢性阻塞性肺病 (COPD) 中的肺过膨胀可能会改变胸内压力,增加LV壁应力.
研究的目的:
- 为了研究COPD残留肺体积和LV质量之间的关联.
主要方法:
- 动脉样硬化多民族研究 (MESA) COPD研究包括没有临床心血管疾病的50-79岁的吸烟者.
- 使用心脏磁共振成像来量化LV质量.
- 肺功能测试测量肺体积;回归模型调整为共变量.
主要成果:
- 在119名参与者中 (65%患有COPD),残留肺体积独立地与更大的LV质量相关 (每1SD增加7.2g;P=0.004).
- 这种关联在规模上与缩血压的关联相当.
- 对于 LV 质量与终端透析体积比率和残留体积与肺总容量比率也发现了类似的关联.
结论:
- 由剩余肺体积或剩余体积与肺总容量的比率来表示的肺高通胀与增加的LV质量有关.
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