title: Recovery of vestibular evoked myogenic potentials after a vertigo attack due to vestibular neuritis.
abstract: CONCLUSIONS
  Inferior vestibular nerve functions could recover in patients with vestibular neuritis (VN).
  
  
  OBJECTIVE
  Although the recovery of superior vestibular nerve functions has been reported, there is little information about the recovery of inferior vestibular nerve functions in patients with VN. This study was done to clarify if inferior vestibular nerve functions recover after an attack of VN.
  
  
  METHODS
  Neuro-otological tests including vestibular evoked myogenic potential (VEMP) testing and caloric testing were sequentially performed in 13 patients with VN, who showed absence of VEMP on the affected side at the initial examination (7 men and 6 women, 28-82 years of age). VEMPs to click stimulation (95 dBnHL) were recorded with surface electrodes over each sternocleidomastoid muscle.
  
  
  RESULTS
  Among the 13 patients, 5 patients (4 men and 1 woman) showed recovery of VEMP responses. Four of the five patients (three men and one woman) showed recovery of VEMP to the normal range. It takes 6 months to 2 years to recover within the normal range. On the other hand, caloric responses recovered to the normal range only in one patient.
authors.affiliation: Department of Otolaryngology, University of Tokyo, Tokyo, Japan. toshi-tky@umin.ac.jp
authors.forename: Toshihisa
authors.initials: T
authors.lastname: Murofushi
authors.forename: Shinichi
authors.initials: S
authors.lastname: Iwasaki
authors.forename: Munetaka
authors.initials: M
authors.lastname: Ushio
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004576:Electromyography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D014717:Vertigo / Q000209:etiology*; D014725:Vestibular Nerve / Q000503:physiopathology*; D020338:Vestibular Neuronitis / Q000150:complications* / Q000503:physiopathology*