title: The midline electroneurography method for facial palsy reflects total nerve degeneration.
abstract: CONCLUSIONS
  The midline electroneurography (ENoG) method might reflect total facial nerve degeneration.
  
  
  OBJECTIVE
  We compared ENoG values in patients with facial palsy using two different methods, the midline method and five electroneurogram recordings, to reveal whether the ENoG value obtained with the midline method reflects total facial nerve degeneration.
  
  
  METHODS
  Forty patients with facial palsy were enrolled. Compound muscle action potentials (CMAPs) were recorded using the midline method, in which the anode was placed on the mental protuberance and the cathode was placed on the philtrum. Additionally, five electroneurogram recordings were obtained by placing the anode on the skin of the parietal region and five cathodes on the skin over five facial muscles (frontalis, orbicularis oculi, nasalis, orbicularis oris, and depressor anguli oris muscles). ENoG values recorded using the two methods were compared.
  
  
  RESULTS
  The ENoG values of the five facial muscles did not differ from those obtained using the midline method. The total ENoG value calculated by summing five CMAPs from five facial muscles, which is considered to reflect total facial nerve degeneration, was not significantly different from that using midline methods; moreover, a strong positive correlation coefficient (r = 0.87) was found between them.
authors.affiliation: Department of Laboratory Medicine, Osaka Medical College, Takatsuki, Osaka, Japan.
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Wada
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Haginomori
authors.forename: Atsuko
authors.initials: A
authors.lastname: Mori
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ichihara
authors.forename: Atsuko
authors.initials: A
authors.lastname: Kanazawa
authors.forename: Ryo
authors.initials: R
authors.lastname: Kawata
authors.forename: Takayuki
authors.initials: T
authors.lastname: Takubo
authors.forename: Shiro
authors.initials: S
authors.lastname: Yorifuji
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000328:Adult; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D000998:Antiviral Agents / Q000627:therapeutic use; D020330:Bell Palsy / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology*; D004359:Drug Therapy, Combination; D004558:Electric Stimulation / Q000379:methods; D004568:Electrodiagnosis / Q000379:methods*; D005152:Facial Muscles / Q000294:innervation; D005154:Facial Nerve / Q000187:drug effects / Q000503:physiopathology; D005260:Female; D016697:Herpes Zoster Oticus / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009410:Nerve Degeneration / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology*; D011237:Predictive Value of Tests; D011239:Prednisolone / Q000627:therapeutic use; D011379:Prognosis
chemical_list: D000893:Anti-Inflammatory Agents; D000998:Antiviral Agents; D011239:Prednisolone