Related Experiment Videos
Cochleovestibular nerve sections in labyrinthectomized patients
The American Journal of Otology
|March 1, 1987
Summary
Labyrinthectomy effectively treats vertigo in most patients. However, some require cochleovestibular nerve section for persistent vertigo, suggesting underlying nerve excitation after labyrinthectomy.
Area of Science:
- Otolaryngology
- Neurosurgery
- Vestibular Disorders
Background:
- Labyrinthectomy is a surgical treatment for unilateral peripheral labyrinthine disease with hearing loss.
- It aims to relieve intractable vertigo by destroying vestibular sense organs.
Observation:
- Some patients experience persistent vertigo even after a complete labyrinthectomy.
- These refractory cases were relieved by subsequent cochleovestibular nerve section.
Findings:
- Cochleovestibular nerve section eliminates spontaneous activity and prevents nerve regeneration.
- Potential reasons for persistent vertigo include incomplete labyrinthectomy, nerve regeneration, vestibular ganglia contribution, nonfunctioning cochlea, or vascular loop syndrome.
Implications:
- Cochleovestibular nerve section may be necessary for select patients with intractable vertigo post-labyrinthectomy.
- Further research is needed to elucidate the exact mechanisms causing persistent vertigo in these cases.