title: Oronasal obstruction, lung volumes, and arterial oxygenation.
mesh_terms: D000402:Airway Obstruction / Q000503:physiopathology*; D006801:Humans; D008176:Lung Volume Measurements; D009055:Mouth / Q000503:physiopathology*; D009666:Nose / Q000503:physiopathology*; D010100:Oxygen / Q000097:blood*
chemical_list: D010100:Oxygen