支气管扩展剂反应的比较研究:使用前支气管扩展剂与预测的正常值相比
Afe Alexis1, Naresh M Punjabi2, Kyle Grealis1
1Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Miami, Miller School of Medicine, 1951 NW 7th Avenue, 33146, Miami, FL, USA.
BMC pulmonary medicine
|January 25, 2024
概括
将支气管扩展剂反应计算进行比较,使用预测的正常值来预测一秒内强制呼气体积 (FEV1) 和强制生命能力 (FVC) 减少了高估值. 这种方法对有空气流阻塞的患者尤其有用,为积极反应提出了新的值.
科学领域:
- 肺部医学 肺部医学
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 阳性支气管扩展剂反应的标准定义涉及FEV1或FVC从支气管扩展剂前值的12%增加和0.2 L绝对变化.
- 最近的指导方针建议使用相对于预测的正常值的百分比变化,但它们在空气流阻塞患者中的应用需要进一步调查.
研究的目的:
- 将传统的支气管扩展剂反应定义与使用预测正常值的方法进行比较.
- 为了评估这些方法在前支气管扩展器FEV和FVC值的范围.
主要方法:
- 对1040名接受螺旋计和支气管扩展剂检测的患者进行了回顾性分析.
- FEV1和FVC的变化被计算为支气管扩展前值的百分比和预测正常值的百分比.
主要成果:
- 使用预测的正常值,在FEV1和FVC的5.8%患者中发现了阳性支气管扩展剂反应,而在使用支气管扩展剂前值时,这一比例分别为19.0%和12.7%.
- 即使考虑到≥0.2L的绝对变化,这些差异仍然存在.
- 对于没有阻塞的患者,相对于预测的正常值,FEV1的阳性反应值为14%,FVC的值为10%.
结论:
- 相对于预测的正常值,计算支气管扩展剂反应显著降低了反应的高估值,特别是在支气管扩展剂前FEV1低的个体中.
- 该研究提出了阳性支气管扩展剂反应的新标准:FEV1变化≥14%,FVC相对于预测的正常值变化≥10%.
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