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J Korean Bal Soc. 2004 Dec;3(2):404-409. Korean. Review.
Kim CW , Jung SH , Lee WS .
Department of Otorhinolaryngology Hallym University College of Medicine, Korea.
Department of Otorhinolaryngology Yonsei University College of Medicine, Korea.

BACKGROUND AND OBJECTIVES:The chemical labyrinthectomy with aminoglycoside is a good method for vertigo control in Meniere's disease. It is relatively non-invasive and easy procedure, but hearing loss is a awful complication. We aimed to evaluate the relationship between the change in the degree of canal paresis in bithermal caloric test and the degree of hearing change. MATERIALS AND METHODS:Sixty-five patients of Meniere's disease who underwent chemical labyrinthectomy with streptomycin between October 1997 and December 2001 were included in this study. The minimum follow-up period for the patients was 24 months. Medical records were analyzed retrospectively. Criteria had been prescribed in 1995 by the American Academy of Otolaryngology-Head and Neck Surgery were used. Forty patients were tested a caloric response before and after the chemical labyrinthectomy. We analyzed the vertigo control rate, the change of the canal paresis and the change of hearing level. RESULTS:Vertigo was controlled in 90.8% of the 65 patients. Twelve patients of total 65 patients were decreased hearing level more than 10 dB after this procedure. Even though the severity of canal paresis increased, the hearing ability of most patients was unaffected. Some patients who had only slight canal paresis happened to suffer from hearing loss. CONCLUSION:There was no correlation between the change in the degree of canal paresis in the bithermal caloric test and the degree of the hearing change.

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