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A member asked:
Bronchoconstriction (asthma/copd) affects breathing out during expiration, but not breathing in during inspiration, how come?
A doctor has provided 1 answer
Dynamic collapse: This is a fancy term of when airway pressure is more on the outside of your airways and collapses as you exhale. This pressure difference happens at different stages of exhalation in copd. With asthma there is narrowing of your airways from inflammation so this constricts the diameter and makes this worse. All due to airway pressure and "equal pressure point". Hope this helps!
Answered 1/6/2015
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