title: Plasma fentanyl concentrations and the occurrence of respiratory depression in volunteers.
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000097:blood; D003864:Depression, Chemical; D005260:Female; D005283:Fentanyl / Q000097:blood / Q000494:pharmacology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D012119:Respiration / Q000187:drug effects*; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen; D005283:Fentanyl