title: Respiratory and circulatory effects of intravenous butorphanol and morphine.
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000097:blood; D002986:Clinical Trials as Topic; D003503:Cyclobutanes / Q000494:pharmacology; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D008297:Male; D009019:Morphinans / Q000009:adverse effects / Q000494:pharmacology*; D009020:Morphine / Q000009:adverse effects / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D010919:Placebos; D011312:Pressure; D012119:Respiration / Q000187:drug effects*; D013990:Tidal Volume; D013997:Time Factors
chemical_list: D003503:Cyclobutanes; D009019:Morphinans; D010919:Placebos; D002245:Carbon Dioxide; D009270:Naloxone; D009020:Morphine