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Exertional Dyspnea and Excessive Dynamic Airway Collapse
Michael J Morris1, Jeffrey T Woods1, Cameron W McLaughlin1
1Pulmonary/Critical Care Service (MCHE-ZMD-P), Department of Medicine, San Antonio Military Medical Center, 3551 Roger Brooke Drive, JBSA Fort Sam Houston, TX 78234, USA.
Immunology and Allergy Clinics of North America
|April 11, 2018
Summary
Excessive dynamic airway collapse, a condition causing large airway functional collapse, is increasingly recognized. This diagnosis is distinct from tracheobronchomalacia and can cause exertional dyspnea even in healthy individuals.
Area of Science:
- Pulmonology
- Respiratory Medicine
Background:
- Excessive dynamic airway collapse (EDAC) is a distinct diagnosis characterized by functional large airway collapse.
- It is often associated with obstructive lung diseases like COPD and asthma, contributing to symptoms such as dyspnea and cough.
- Limited data exist on EDAC's specific role during exercise.
Purpose of the Study:
- To investigate the role of excessive dynamic airway collapse in exercise-induced dyspnea.
- To explore EDAC as a potential cause of exertional dyspnea in individuals without pre-existing lung disease.
Main Methods:
- This section would typically detail the study's methodology, such as patient selection, diagnostic techniques used to identify EDAC (e.g., dynamic airway imaging), and exercise testing protocols.
- Specific methods for assessing airway collapse during exertion would be elaborated here.
Main Results:
- Recent findings suggest EDAC can cause exertional dyspnea.
- This phenomenon has been observed in individuals without underlying lung conditions, highlighting a new cause for exercise-related breathing difficulties.
Conclusions:
- Excessive dynamic airway collapse is an important consideration for exertional dyspnea, even in the absence of obstructive lung disease.
- Further research is warranted to fully understand the prevalence and impact of EDAC on exercise capacity.
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