<unk>  is a phenomenon that occurs when a new breath begins before the lung has reached the static equilibrium volume. 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.
Dynamic hyperinflation
Autoinflation
Quatrefoil reentry
Solvent drag
Bio-secure bubble
Exsufflation
Glossopharyngeal breathing
Vascular recruitment