透气症与肺功能轨迹有差异性关系,COPD的结构和功能模式不同,不良结果的风险可变
James C Ross1, Raul San José Estépar1, Sam Ash2
1Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
气道的不足,称为dysanapsis,与慢性阻塞性肺病 (COPD) 的进展有关. 较低的气道到肺的大小比率预测COPD患者的死亡率和恶化程度更高.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 遗传学 是一个遗传学.
背景情况:
- 异常的肺功能轨迹增加了COPD和死亡的风险.
- 气道不足 (dysanapsis) 是COPD的一个已知的危险因素.
- 缺血症和COPD相关的不良结果之间的联系还没有得到充分研究.
研究的目的:
- 调查如何dysanapsis影响与不良COPD结果相关的不同肺功能轨迹.
- 为了测试这种假设,dysanapsis差异性影响COPD进展途径.
主要方法:
- 来自COPDGene研究的FEV1和FVC Z-score的贝叶斯轨迹分析.
- 死亡率和COPD恶化趋势的风险分层 (ECOPD).
- 从CT扫描中测量气道光度与肺体积 (a/l) 的比率,以量化dysanapsis.
主要成果:
- 确定了七种肺功能轨迹,其中五种风险增加.
- 风险轨迹显示较低的a/l比率,与较高的死亡率和ECOPD风险相关.
- 截然不同的FEV1/FVC损伤模式和CT成像发现 (气道与肺气占主导地位) 与不同程度的dysanapsis有关.
结论:
- 松症的严重程度似乎可以预测COPD的进展模式.
- 将个人分配到特定的轨迹上,即使没有螺旋计阻碍,也可以告知管理层.
- 结合CT评估的失敏症与螺旋测量和烟雾暴露数据,可以改善高风险个体的早期检测.
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