Dynamic hyperinflation in patients with COPD
- Meredith C McCormack, MD, MHS
Meredith C McCormack, MD, MHS
- Assistant Professor of Medicine
- Medical Director, Pulmonary Function Laboratory Pulmonary and Critical Care Medicine Johns Hopkins University
Exercise or hyperpnea-induced air trapping is referred to as dynamic hyperinflation. Patients with chronic obstructive pulmonary disease (COPD) are particularly susceptible to dynamic hyperinflation. Common questions include:
●What causes dynamic hyperinflation?
●What are its clinical manifestations?
●How is it diagnosed?
●What is the treatment?
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- Static hyperinflation
- Dynamic hyperinflation
- CLINICAL PRESENTATION
- Inspiratory capacity
- Flow-volume loops
- DIFFERENTIAL DIAGNOSIS
- Decrease airflow obstruction
- - Anticholinergic drugs
- - Beta-agonists
- - Combination beta-agonist and inhaled glucocorticoid
- - Theophylline
- - Heliox
- Reduce ventilatory load
- - Oxygen
- - Rehabilitation
- Lung volume reduction
- - Surgical
- - Bronchoscopic
- Therapies of unclear benefit
- - N-acetylcysteine
- SOCIETY GUIDELINE LINKS
- SUMMARY AND RECOMMENDATIONS