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Reduced bronchodilator reversibility correlates with non-type 2 high asthma and future exacerbations: A prospective cohort study

医学 哮喘 支气管扩张剂 指南 内科学 前瞻性队列研究 队列 逻辑回归 队列研究 观察研究 物理疗法 病理
作者
Lei Liu,Xin Zhang,Li Zhang,Ying Liu,Hong Ping Zhang,Shu Zhen Zhao,Jie Zhang,Wei Jie Zhang,Fang Wang,Gang Wang,Anny Xiaobo Zhou,Wei Min Li,Gang Wang,Peter G. Gibson
出处
期刊:Respiratory Medicine [Elsevier]
卷期号:200: 106924-106924 被引量:5
标识
DOI:10.1016/j.rmed.2022.106924
摘要

Background Given that airway obstruction in asthma is not always fully reversible, reduced bronchodilator reversibility (BDR) may be a special asthma phenotype. Objective To explore the characteristics of BDRhigh/low phenotypes (defined using two BDR criteria) and their associations with asthma exacerbations (AEs). Methods After baseline assessments, all patients were classified into BDRhigh or BDRlow phenotypes. This study consisted of 2 parts. Part I was a 12-month prospective observational cohort study designed to identify the clinical characteristics and associations with future AEs in BDRhigh/low phenotypes (n = 456). Part II, designed as a post hoc analysis of the data obtained in Part I, was conducted to assess the association between BDRhigh/low phenotypes and treatment responsiveness (n = 360). Results Subjects with BDRlow phenotypes had better baseline asthma symptom control and was negatively associated with eosinophilic asthma and type 2 (T2) high asthma. During the 12-month follow-up, those with BDRlow phenotypes had a higher risk of severe AEs (SAEs) (guideline-based criterion: RRadj = 2.24, 95% CI = [1.25, 3.68]; Ward's criterion: RRadj = 2.46, 95% CI = [1.40, 4.00]) and moderate-to-severe AEs (MSAEs) (guideline-based criterion: RRadj = 1.83, 95% CI = [1.22, 2.56]; Ward's criterion: RRadj = 1.94, 95% CI = [1.32, 2.68]) in the following year according to logistic regression models. Similar findings were obtained with negative binominal regression models. BDRlow phenotype was a risk factor for an insensitive response to anti-asthma treatment (guideline-based criterion: ORadj = 1.96, 95% CI = [1.05, 3.65]; Ward's criterion: ORadj = 2.01, 95% CI = [1.12, 3.58]). Conclusion We identified that BDRlow phenotype was associated with non-T2 high asthma and future AEs. These findings have clinically relevant implications for asthma management.
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