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- W2039701336 abstract "This article reviews findings from longitudinal observational studies in both general and chronic obstructive pulmonary disease (COPD) populations, as well as from intervention trials in COPD, in which the annual rate of decline in forced expired volume in 1 s (FEV₁) has been measured. The purpose of the review is to describe the individual variability in rates of decline in FEV₁ within these populations, explore the factors contributing to this variability and discuss its implications.Individual rates of decline in FEV₁ have been found to vary considerably across participants with COPD in both observational cohorts and intervention trials from decreases as rapid as 150-200 ml per year to increases of up to approximately 150 ml per year, with mean rates of decline ranging from 33 to 69 ml per year. Aside from technical and biologic (e.g., time of day, season, weather, fatigue) sources of variation, other influential factors have included smoking status (most notably current versus former smoking), baseline smoking intensity, baseline lung function, airway hyperresponsiveness, exacerbation frequency, and, variably, age and sex. The presence of emphysema may also be a determinant, as well as certain biomarkers and gene variants.The wide distribution of individual rates of decline in FEV₁ includes especially rapid and slow declines. Future research is needed to identify biomarkers that both are predictive of a rapid decline within individuals who might then be targeted for special intervention and might also serve as surrogate endpoints in interventional trials." @default.
- W2039701336 created "2016-06-24" @default.
- W2039701336 creator A5062711392 @default.
- W2039701336 date "2013-03-01" @default.
- W2039701336 modified "2023-09-26" @default.
- W2039701336 title "Variations in FEV1 decline over time in chronic obstructive pulmonary disease and its implications" @default.
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- W2039701336 doi "https://doi.org/10.1097/mcp.0b013e32835d8ea4" @default.
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