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Dynamic hyperinflation is a phenomenon that occurs when a new breath begins before the lung has reached the static equilibrium volume. [1] In simpler terms, this means that a new breath starts before the usual amount of air has been breathed out, leading to a build-up of air in the lungs, and causing breathing in and out to take place when the lung is nearly full.
Hyperventilation is irregular breathing that occurs when the rate or tidal volume of breathing eliminates more carbon dioxide than the body can produce. [1] [2] [3] This leads to hypocapnia, a reduced concentration of carbon dioxide dissolved in the blood.
Unlike these diseases, the airway obstruction in asthma is usually reversible; however, if left untreated, the chronic inflammation from asthma can lead the lungs to become irreversibly obstructed due to airway remodelling. [105] In contrast to emphysema, asthma affects the bronchi, not the alveoli. [106]
While prevalence is likely higher due to the fact that asthma can go undiagnosed and untreated, nearly 1 in 10 adults living in the United States likely has the condition per the U.S. Centers for ...
Air trapping represents poorly aerated lung, but on its own is clinically benign. It is a common problem for smokers who dive. On diving the lung volume collapses and pushes air into the poorly aerated regions. On arising from a deep depth, these air-trapped areas of lung expand. This places great pressure on the lung tissue which can rupture. [3]
If an asthma sufferer is spending time outdoors, the dry air can be a factor when it comes to asthma symptoms. Dry air easily dries out the airways, leading to irritation that can cause swelling ...