title: Cardiovascular responses in the seated position--impact of four anesthetic techniques.
mesh_terms: D000328:Adult; D000768:Anesthesia, General / Q000379:methods*; D004329:Droperidol / Q000494:pharmacology; D004338:Drug Combinations / Q000494:pharmacology; D004737:Enflurane / Q000494:pharmacology; D005283:Fentanyl / Q000494:pharmacology; D006221:Halothane / Q000494:pharmacology; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D008875:Middle Aged; D009020:Morphine / Q000494:pharmacology; D009493:Neurosurgery; D009609:Nitrous Oxide / Q000494:pharmacology; D011187:Posture; D012083:Renin / Q000097:blood
chemical_list: D004338:Drug Combinations; D009020:Morphine; C001451:Innovar; D004737:Enflurane; D012083:Renin; D009609:Nitrous Oxide; D004329:Droperidol; D005283:Fentanyl; D006221:Halothane