In people with<unk><unk><unk>  disease, carbon dioxide toxicity can be prevented by careful control of the supplemental<unk> . In those with an acute exacerbation of COPD, hypoxic<unk>  vasoconstriction can improve gas exchange, and so just enough<unk>  is given to maintain an<unk>  saturation of 88%–92%.
Effect of oxygen on chronic obstructive pulmonary disease
Effects of high altitude on humans
Airway resistance
Central neurogenic hyperventilation
Pathophysiology of asthma
Pathophysiology of acute respiratory distress syndrome
Intermittent hypoxic training
Aspirin exacerbated respiratory disease