title: End-tidal oxygen analysis using a synchronous pulse generator.
mesh_terms: D000403:Airway Resistance; D002245:Carbon Dioxide / Q000032:analysis; D006801:Humans; D010100:Oxygen / Q000032:analysis* / Q000097:blood; D011048:Polarography; D011652:Pulmonary Circulation; D012129:Respiratory Function Tests / Q000295:instrumentation*
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen