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JAMA Intern Med:臭氧与吸烟者呼吸疾病恶化

2020-01-07 MedSci MedSci原创

研究发现,长期臭氧暴露与肺功能下降、CT扫描上肺气肿、空气潴留以及吸烟患者呼吸系统疾病恶化相关

近日研究人员考察了臭氧暴露与慢性阻塞性肺疾病(COPD)和C T诊断的呼吸系统疾病之间的关系。

全美7个周的志愿者参与研究,受试者有臭氧暴露的历史数据(n=1874),目前或以前吸烟者,基线年龄为40至80岁。通过特定队列的时空模型估计参与者居住环境中10年平均臭氧浓度。研究的主要终点为肺活量测定证实的COPD,慢性支气管炎诊断,CT结果(肺气肿,空气潴留和气道壁厚),6分钟步行试验, mMRC呼吸困难量表评估,COPD评估(CAT),St. George's呼吸问卷(SGRQ)调查,第一秒用力呼吸量(FEV1)%。

1874名参与者,平均年龄64.5岁,男性占54.1%。调整后,臭氧浓度增加5ppb(十亿分之一)与肺气肿(β=0.94)和空气潴留(β=1.60)的风险增加有关;与mMRC呼吸困难量表(β=0.10)、CAT (β=0.65)和SGRQ(β=1.47)评分较差相关;导致FEV1%降低(β=-2.50)、呼吸疾病任何恶化(OR:1.37)和严重恶化(OR:1.37)风险相关。历史臭氧暴露与慢性支气管炎、COPD、气道壁厚度或6分钟步行试验结果之间无关联。

研究发现,长期臭氧暴露与肺功能下降、CT扫描上肺气肿、空气潴留以及吸烟患者呼吸系统疾病恶化相关。

原始出处:

Laura M. Paulin et al. Association of Long-term Ambient Ozone Exposure With Respiratory Morbidity in Smokers. JAMA Intern Med. December 9, 2019.

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    2020-01-09 xuqianhua
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    2020-01-07 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

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