PMID- 1358342
OWN - NLM
STAT- MEDLINE
DCOM- 19921218
LR  - 20161013
IS  - 0929-6646 (Print)
IS  - 0929-6646 (Linking)
VI  - 91
IP  - 6
DP  - 1992 Jun
TI  - The simultaneous use of electrocochleogram, brainstem auditory evoked potential 
      and facial muscle EMG in cerebellopontine angle tumor removal.
PG  - 580-4
AB  - In six cases of acoustic neurilemmoma, electrocochleogram (ECOchG), brainstem 
      auditory evoked potentials (BAEP) and facial muscle electromyograms (EMG) were 
      recorded to monitor facial nerve and brainstem function. Under isoflurane and 
      nitrous oxide anesthesia, we recorded ECOchG from the tympanic membrane, BAEP 
      from the scalp needle, and facial muscle EMG from the mentalis muscle. During 
      surgery, the body temperature was kept above 36.5 degrees C, and PaCO2 above 30 
      mmHg. In all cases, the peak N1 of ECOchG and wave I of BAEP had identical 
      latencies throughout the monitoring period. The response was faster and the 
      amplitude was higher in the ECOchG recordings. For calculation of the I-III or 
      I-V interpeak latency of BAEP, the wave I of BAEP could be confirmed more quickly 
      and precisely by the peak N1 of ECOchG. During tumor removal, the embedded facial 
      nerve pathway in the tumor was identified by electric stimulation of the 
      intracranial facial nerve, followed by evoked facial muscle EMG. Facial nerve 
      function was confirmed by nerve traction or direct electric stimulation after 
      total removal of the tumor. No facial palsy or other neurologic sequelae was 
      found after the operations.
FAU - Hsu, J C
AU  - Hsu JC
AD  - Department of Anesthesiology, Chang Gung Medical College, Chang Gung Memorial 
      Hospital, Taipei, Taiwan R.O.C.
FAU - Lui, T N
AU  - Lui TN
FAU - Yu, C L
AU  - Yu CL
FAU - Chen, Y C
AU  - Chen YC
FAU - Chang, C N
AU  - Chang CN
FAU - Tan, P P
AU  - Tan PP
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PL  - Singapore
TA  - J Formos Med Assoc
JT  - Journal of the Formosan Medical Association = Taiwan yi zhi
JID - 9214933
SB  - IM
MH  - Adult
MH  - Aged
MH  - *Audiometry, Evoked Response
MH  - Cerebellar Neoplasms/physiopathology/*surgery
MH  - *Cerebellopontine Angle
MH  - *Electromyography
MH  - *Evoked Potentials, Auditory, Brain Stem
MH  - Facial Muscles/*physiopathology
MH  - Humans
MH  - Intraoperative Period
MH  - Middle Aged
EDAT- 1992/06/01 00:00
MHDA- 1992/06/01 00:01
CRDT- 1992/06/01 00:00
PHST- 1992/06/01 00:00 [pubmed]
PHST- 1992/06/01 00:01 [medline]
PHST- 1992/06/01 00:00 [entrez]
PST - ppublish
SO  - J Formos Med Assoc. 1992 Jun;91(6):580-4.