在COPD中识别异常的运动性呼吸困难:将修改的医学研究委员会和COPD评估测试与心肺运动测试进行比较
Magnus Ekström1, Hayley Lewthwaite2, Pei Zhi Li3
1Department of Clinical Sciences Lund, Respiratory Medicine, Allergology and Palliative Medicine (M. E.), Faculty of Medicine, Lund University, Lund, Sweden.
经过修改的医学研究委员会 (mMRC) 尺度和COPD评估测试 (CAT) 在运动测试期间经常无法检测COPD患者的高强度呼吸困难. 这些常见的评估的准确性很低,并错过了许多患有严重呼吸困难的个人.
科学领域:
- 肺部医学 肺部医学
- 心血管呼吸系统生理学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 慢性阻塞性肺病 (COPD) 管理依赖于使用诸如修改后的医学研究委员会 (mMRC) 尺度和COPD评估测试 (CAT) 等工具的症状负担评估.
- 精确评估炼性呼吸困难对于有效的COPD管理和了解疾病影响至关重要.
研究的目的:
- 评估mMRC尺度和CAT在增量心肺运动测试 (CPET) 期间在COPD患者中识别异常高的炼性呼吸困难的能力.
主要方法:
- 来自加拿大队列阻塞性肺病研究的数据分析,包括40岁以上的COPD确诊患者.
- 在限制症状的CPET期间,使用Borg喘息量表的规范参考方程来定义异常的努力性喘息.
- 将CPET结果与mMRC和CAT得分进行比较,以评估诊断的准确性,敏感性和特异性.
主要成果:
- 在COPD患者中,很大一部分 (24%) 在CPET期间表现出异常高的炼性呼吸困难.
- 低分数在mMRC (0) 和CAT (<10) 中是常见的,即使在患有高强迫性呼吸困难的患者中也是如此,这表明灵敏度差.
- 虽然高分数 (mMRC ≥2,CAT ≥10) 是特定的,但它们检测异常喘息的灵敏度很低 (12%),整体准确率低于65%.
结论:
- 在mMRC尺度和CAT显示有限的一致性与客观的CPET调查结果对COPD的努力性呼吸困难.
- 这些常用的症状尺度经常低估或未能识别在炼期间经历显著炼性呼吸障碍的个体.
- 可能需要进一步的研究来开发更敏感的工具来评估COPD管理中的运动限制.
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