喘患者的呼吸道小异常,持续有空气流量限制
Marco Contoli1,2, Federico Baraldi1, Luca Morandi2
1Respiratory Section, Department of Translational Medicine, University of Ferrara, Ferrara, Italy.
概括
小呼吸道功能障碍在喘患者中常见,有持续的空气流量限制,大大导致他们的症状. 这种情况是COPD和可逆性喘之间的中间状态,这表明有针对性的治疗可能有所帮助.
科学领域:
- 肺部医学 肺部医学
- 呼吸系统研究 呼吸系统研究
背景情况:
- 持续的空气流限制 (PAL) 影响了一些喘患者,尽管得到了最佳治疗.
- 小气道功能障碍 (SAD) 在PAL中的作用及其与症状的联系尚未完全理解.
研究的目的:
- 在患有PAL的喘患者中评估小气道功能.
- 将PAL患者的小气道功能与完全可逆性喘和COPD患者进行比较.
- 探索小气道指数与患者报告的结果之间的相关性.
主要方法:
- 招募了60名患者:20名患有喘和PAL,20名患有完全可逆性喘,20名患有COPD,年龄,性别和FEV1.
- 通过脉冲振荡计 (IOS; R5-R20) 和单呼吸冲洗试验 (SBNWT; dN2) 评估了小气道功能.
- 患者完成了为期4周的每日症状日记.
主要成果:
- 患有PAL的喘患者的dN2和R5-R20值高于患有可逆性喘患者,但低于COPD患者.
- 小气道功能障碍 (SAD) 的流行率为:PAL的79%,可逆性喘的37%,COPD的100%.
- 在PAL中,R5-R20与呼吸障碍得分有很强的相关性;在可逆性喘中,它与咳和救援药物使用有关.
结论:
- 小呼吸道功能障碍在患有PAL的喘患者中非常普遍,并显著增加了他们的日常症状负担.
- 在PAL患者中SAD的中度严重程度表明SAD在固定阻塞的发展中起着关键作用.
- 这些发现支持针对喘中SAD的向诊断和治疗策略的潜力.
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