title: Ventilation corrected oxygen tension in lethal pulmonary embolism.
abstract: Lethal pulmonary embolism is associated with hypoxemia and hypocapnia in the vast majority of cases. The easily calculated ventilation corrected oxygen tension was a very sensitive test in patients breathing air. It yielded no normals, four percent mild hypoxemia, and 96 percent moderate to extreme hypoxemia. The alveolar-arterial oxygen tension difference and oxygen ratio were equally sensitive during air breathing. During oxygen inhalation, alveolar-arterial oxygen difference was most sensitive; oxygen ratio was second best; and oxygen saturation was the least sensitive test.
mesh_terms: D000368:Aged; D001784:Blood Gas Analysis; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000503:physiopathology; D000860:Hypoxia / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010100:Oxygen; D011655:Pulmonary Embolism / Q000503:physiopathology*; D012189:Retrospective Studies
chemical_list: D010100:Oxygen