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Published on: December 17, 2017
Early Features of Chronic Obstructive Pulmonary Disease in Patients with Asthma: Is there ACO before ACO?
1Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, 2725, Chemin Sainte-Foy, Québec, Québec G1V 4G5, Canada.
Abstract:
The diagnosis of asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) is considered when a patient presents features of both asthma and COPD, usually including a component of irreversible airway obstruction (IRAO). However, some patients with asthma, particularly smokers, may have various features typical of COPD in the absence of such component of IRAO. Features of early COPD can be found at a young age in such patients even with normal spirometry. More longitudinal studies should be conducted to determine steps needed to improve clinical outcomes of these patients including the early recognition of these changes and the application of preventative/therapeutic interventions.
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