title: The arterial-alveolar oxygen tension ratio. An index of gas exchange applicable to varying inspired oxygen concentrations.
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005069:Evaluation Studies as Topic; D006801:Humans; D008433:Mathematics; D010100:Oxygen / Q000097:blood*; D012129:Respiratory Function Tests
chemical_list: D010100:Oxygen