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Selective chemical vestibulectomy. Preliminary results
1Department of Otolaryngology, University of Mainz, Germany.
Summary
Selective chemical vestibulectomy using streptomycin effectively treated intractable vertigo in Ménière's disease patients. While vertigo improved significantly, some patients experienced increased cochlear thresholds, impacting hearing preservation.
Area of Science:
- Otolaryngology
- Neurosurgery
- Vestibular System Disorders
Background:
- Ménière's disease is a debilitating inner ear disorder characterized by vertigo, tinnitus, and hearing loss.
- Intractable vertigo in end-stage Ménière's disease often necessitates surgical intervention.
- Selective peripheral vestibular ablation aims to alleviate vertigo while preserving hearing.
Purpose of the Study:
- To evaluate the efficacy of selective chemical vestibulectomy using streptomycin for intractable vertigo.
- To assess hearing preservation and changes in disability 12 months post-procedure.
- To determine the reliability of streptomycin in ablating the vestibular labyrinth.
Main Methods:
- 25 patients with end-stage Ménière's disease underwent selective chemical vestibulectomy.
- Streptomycin was instilled between the bony and membranous lateral semicircular canal.
- Dosage ranged from 100 to 250 micrograms; 23 patients were available for 12-month follow-up.
Main Results:
- All patients experienced significant improvement in vertigo within 12 months.
- Some patients reported overall hearing improvement, but increased cochlear thresholds were noted.
- Changes in disability were assessed in the 23 follow-up patients.
Conclusions:
- Selective chemical vestibulectomy with streptomycin is a reliable method for controlling vertigo in Ménière's disease.
- Hearing preservation remains a critical consideration, as cochlear thresholds may increase.
- Further research is needed to optimize streptomycin dosage for maximal vertigo control and minimal ototoxicity.