Several types of conditions can potentially result in<unk> : * Conditions that reduce the flow of air into and out of the lungs, including physical obstruction by foreign bodies or masses and reduced breathing due to drugs or changes to the chest. *Conditions that impair the lungs' blood supply. These include thromboembolic conditions and conditions that reduce the output of the right heart, such as right heart<unk>  and some myocardial infarctions. * Conditions that limit the ability of the lung tissue to exchange oxygen and carbon dioxide between the blood and the air within the lungs. Any disease which can damage the lung tissue can fit into this category. The most common causes are (in no particular order) infections, interstitial lung disease, and pulmonary oedema.
Respiratory failure
Respiratory compromise
Pulmonary toxicity
Liver failure
Sleep paralysis
Pulmonary insufficiency
Neurotoxicity
Sedation