<unk>  is a type of restrictive lung disease, indicated by decreased alveolar ventilation with accompanying hypercapnia. It is characterized as an inhibition to the drive to breathe, or an ineffective restoration of the drive to breathe.<unk>  can be caused by central and peripheral nervous system dysfunctions, over-sedation, or trauma (such as a broken rib).
Extrapulmonary restriction
Mediastinal fibrosis
Air trapping
Hepatization of lungs
Autoinflation
Dynamic hyperinflation
Diffuse alveolar damage
Hypoxic pulmonary vasoconstriction