Suboptimal Peak Inspiratory Flow in Patients Hospitalized for COPD Exacerbation: Prevalence and Predictive Factors

Despite the importance of an adequate peak inspiratory flow (PIF) during inhaled therapy in patients with COPD, the available evidence in patients with severe exacerbations and their evolution after admission is limited. We conducted this study to evaluate the PIF during an exacerbation, its variability, and predictors of suboptimal PIF.