title: Paradoxical changes in bispectral index during nitrous oxide administration.
abstract: I report two patients undergoing open heart surgery, with nitrous oxide and isoflurane anaesthesia, for whom bispectral index (BIS) monitoring showed high BIS values with nitrous oxide and isoflurane anaesthesia. The BIS decreased immediately after nitrous oxide was stopped and increased again after nitrous oxide was restarted.
authors.affiliation: Department of Anesthesiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: G D
authors.initials: GD
authors.lastname: Puri
mesh_terms: D000328:Adult; D018685:Anesthetics, Inhalation / Q000494:pharmacology*; D006348:Cardiac Surgical Procedures; D004569:Electroencephalography / Q000187:drug effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D009609:Nitrous Oxide / Q000494:pharmacology*
chemical_list: D018685:Anesthetics, Inhalation; D009609:Nitrous Oxide