The effect of pyridostigmine on bispectral index during recovery from sevoflurane anesthesia.

Background: There have been some conflicting reports showing that muscle relaxants and anticholinesterases affect the level of the bispectral index (BIS). The purpose of this study was to investigate whether pyridostigmine affects the level of the BIS during recovery from sevoflurane anesthesia.

Methods: Fifty-two adult patients scheduled for laparoscopic cholecystectomy and laparoscopic appendectomy.