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Hearing loss after microvascular decompression for trigeminal neuralgia
W Fritz1, J Schäfer, H J Klein
1Department of Neurosurgery, University of Ulm, Bezirkskrankenhaus, Günzburg, West Germany.
Journal of Neurosurgery
|September 1, 1988
Summary
Postoperative hearing impairment occurred in 23.8% of patients after microvascular decompression of the trigeminal nerve. Causes included middle ear effusion and retrocochlear lesions, impacting cochlear nuclei or nerve traction.
Area of Science:
- Neurosurgery
- Audiology
- Otolaryngology
Background:
- Microvascular decompression (MVD) is a surgical treatment for trigeminal neuralgia.
- Auditory function can be affected by cranial nerve surgery.
- Understanding hearing changes post-MVD is crucial for patient outcomes.
Purpose of the Study:
- To evaluate the incidence and potential causes of hearing impairment following microvascular decompression of the trigeminal nerve.
Main Methods:
- Audiometric examinations were performed on 21 patients before and after MVD.
- Postoperative findings were analyzed to identify causes of hearing impairment.
Main Results:
- Five patients (23.8%) experienced postoperative hearing impairment.
- Three patients (14.3%) developed middle ear effusion, likely due to mastoid cell opening.
- Other cases were attributed to retrocochlear lesions, possibly from pressure on cochlear nuclei or nerve traction.
Conclusions:
- Hearing impairment is a potential complication of trigeminal nerve MVD.
- Causes are multifactorial, including otologic and neural factors.
- Further investigation into vascular perfusion may be warranted.