Electronystagmography after Stapedectomy

Abstract

The aim of this study was to assess the persistent vestibular changes after stapedectomy as shown by electronystagmography. Sixty-two otosclerotic ears were studied before and after stapedectomy for vertigo, spontaneous and positional nystagmus with closed eyes and intensity of caloric responses. In this sense, preoperative vertigo, spontaneous or positional nystagmus, poor bone conduction or caloric hypoactivity did not routinely correlate with postoperative vestibular troubles. In most cases vertigo was ameliorated after operation. In six cases drilling of the footplate induced a 66% rate of vestibular dysfunction. A poor hearing result was usually associated with vestibular dysfunction. The vestibular apparatus was more commonly adversely affected by stapedectomy than the cochlear apparatus.