title: Comparison of blood requirements during morphine and halothane anesthesia for open-heart surgery.
mesh_terms: D000758:Anesthesia; D000769:Anesthesia, Inhalation; D001021:Aortic Valve / Q000601:surgery; D001769:Blood; D001794:Blood Pressure; D006348:Cardiac Surgical Procedures; D001026:Coronary Artery Bypass; D005112:Extracorporeal Circulation; D006221:Halothane / Q000494:pharmacology*; D006350:Heart Valve Prosthesis; D006801:Humans; D009020:Morphine / Q000494:pharmacology*
chemical_list: D009020:Morphine; D006221:Halothane