<unk>  is the administration of<unk>  as a<unk> utic modality.<unk>  benefits the patient by increasing the supply of<unk>  to the lungs and thereby increasing the availability of<unk>  to the body tissues.
Appropriate levels of<unk>  are vital to support cell respiration. High blood and tissue levels of<unk>  can be helpful or damaging, depending on circumstances. Hyperbaric<unk>  is the use of high levels of<unk>  for treatment of specific diseases. High levels of<unk>  given to neonates causes blindness by promoting overgrowth of new blood vessels in the eye obstructing sight. This is Retinopathy of prematurity (ROP). Administration of high levels of<unk>  in patients with severe emphysema and high blood carbon dioxide reduces respiratory drive, which can precipitate respiratory failure and death.<unk>  first aid specifically refers to the use of<unk>  in a first aid setting.<unk>  will assist patients with myocardial infarction and hypoxia (low blood<unk>  levels). Care needs to be exercised in patients with chronic obstructive pulmonary disease, especially in those known to retain carbon dioxide (type II respiratory failure) who lose their respiratory drive and accumulate carbon dioxide if administered<unk>  in moderate concentration. For this reason, some jurisdictions require medical approval for all emergency<unk>  administration.
Oxygen therapy
Asthma spacer
Pulmonary rehabilitation
Positive airway pressure
Biphasic positive airway pressure
Aminophylline
High frequency ventilation
Positive pressure ventilation