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[A study on auditory disturbances after microvascular decompression for hemifacial spasm].
Nihon Jibiinkoka Gakkai Kaiho
|May 1, 1991
Summary
Microvascular decompression surgery for hemifacial spasm can cause hearing loss, though tinnitus often improves. Most hearing impairments were mild sensorineural hearing loss, with some recovery possible.
Area of Science:
- Neurosurgery
- Audiology
Context:
- Microvascular decompression (MVD) surgery, pioneered by Jannetta in 1975, effectively treats hemifacial spasm.
- However, MVD is associated with potential complications, including hearing deficits, equilibrium disturbances, and facial paresis.
Purpose:
- To evaluate the incidence and characteristics of hearing impairments following MVD surgery for hemifacial spasm.
- To assess the impact of MVD on tinnitus and hearing outcomes in patients with hemifacial spasm.
Summary:
- This study examined 57 patients with hemifacial spasm who underwent MVD surgery between 1982 and 1989, using pre- and post-operative audiometry.
- Postoperative hearing impairments occurred in 8 patients (14%) in the operated ear and 7 patients (12.3%) in the contralateral ear.
- Tinnitus improved in most cases, particularly when associated with facial spasm and eyelid closure.
Impact:
- Identifies a notable incidence of hearing impairment after MVD for hemifacial spasm.
- Highlights the potential for hearing recovery in cases of mild sensorineural hearing loss.
- Provides crucial data for patient counseling regarding the risks and benefits of MVD surgery.