Abstract
When the central auditory pathway is suddenly disturbed, acute hearing loss may occur. Depending upon the extension of the lesion, hearing loss appears not only unilaterally but also bilaterally.
A case who suffered from acute bilateral hearing loss and rotatory vertigo was studied neurootologically. At first from her history the patient had treated as sudden deafness. The findings of nystagmus test, OKP, ETtest, speech discrimination, and ABR, however, indicated the brain stem pathology. In addition, MRI revealed a small image of infarction in the right dorsal part of the mid-pons.
We suspect that the anatomical features including vascular network may cause this poor neurological symptoms with out the 8th nerve signs.
Prednisolon, Low molecule dextran, Prostagrandin E1, Vitamin B12, Vinpocetine and Bifemelane HCl were given to the patient. After the treatment, the hearing loss, speech discrimination, caloric response, OKP AND ET were improved remarkably.
