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Lung compliance

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Definition

noun

(1) The ability of the lungs to stretch in a change in pulmonary volume relative to an applied change in pressure.

(2) A measure of the distensibility of lung using the following formula: C = ΔV / ΔP, where ΔV is the change in volume and ΔP is the change in pressure, typically expressed in L/cm HOH.


Supplement

Lung compliance can be influenced by disease states. For instance, fibrosis in lungs makes the lungs stiffer, thereby, decreasing lung compliance. In Emphysema, where many alveolar walls are lost resulting in the lungs becoming loose and floppy that only a small pressure difference is necessary to maintain a large volume., there will be an increase in lung compliance.


"Also called as: pulmonary compliance.