Unusually low bispectral index values during emergence from anesthesia.
We observed unusually low BIS values during emergence from anesthesia apparently caused by misanalysis (as "suppression") of low voltage electroencephalogram.


CONCLUSIONS
When BIS values do not adequately correspond with clinical status, it is necessary to check raw electroencephalogram waveforms to more clearly characterize patient status.
Hagihira
Satoshi
S
*Department of Anesthesiology, Osaka University Graduate School of Medicine, and the †Department of Anesthesiology, Osaka Prefectural Habikino Hospital, Osaka, Japan.
Okitsu
Kenta
K
Kawaguchi
Maki
M
D000293:Adolescent; D000758:Anesthesia; D000762:Anesthesia Recovery Period; D004569:Electroencephalography / Q000187:drug effects*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D011184:Postoperative Period