Gentamicin Cures Vertigo, but What Happens to Hearing?

Area of Science:

• Otolaryngology
• Neurology

Background:

• Meniere's disease causes severe vertigo and can lead to debilitating ataxia.
• Current treatments for Meniere's disease have limitations.

Purpose of the Study:

• To evaluate the efficacy of middle ear gentamicin instillation for Meniere's disease vertigo control.
• To assess the impact of gentamicin on hearing and vestibular function.

Main Methods:

• Gentamicin was instilled into the middle ear of patients with severe Meniere's disease.
• Vestibular rehabilitation was provided post-treatment.
• Hearing levels and vestibular function were monitored.

Main Results:

• Gentamicin instillation significantly controlled vertigo.
• The treatment typically caused peripheral vestibular loss, which was resolved by rehabilitation through central compensation.
• A modified treatment protocol (single instillation on 2 consecutive days) reduced the incidence of added hearing loss to zero.
• No correlation was found between pre-treatment hearing levels and added hearing loss.

Conclusions:

• Middle ear gentamicin instillation is a valuable treatment for vertigo in severe Meniere's disease.
• A specific administration strategy minimizes the risk of hearing loss.
• Central compensation effectively manages post-treatment ataxia.