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Relationship between GBST and equilibrium examination in vestibular neuronitis
N Fujita1, T Yamanaka, T Matsunaga
1Department of Otolaryngology, Nara Medical University, Japan.
Acta Oto-Laryngologica. Supplementum
|January 1, 1993
Summary
Vestibular neuronitis patients showed symptom improvement, but unsteadiness persisted in some. The galvanic body sway test (GBST) often indicated abnormalities, though not directly correlating with final vertigo symptoms.
Area of Science:
- Neurology
- Otolaryngology
- Vestibular System Disorders
Background:
- Vestibular neuronitis is a common cause of vertigo.
- Understanding long-term outcomes and diagnostic tool utility is crucial.
Purpose of the Study:
- To evaluate the long-term outcomes of vestibular neuronitis.
- To investigate the relationship between the galvanic body sway test (GBST) and other vestibular function tests.
Main Methods:
- Follow-up study of 11 vestibular neuronitis patients from 1988-1990.
- Assessment of vertiginous symptoms, nystagmus, caloric stimulation, and galvanic body sway test (GBST).
Main Results:
- Most patients reported symptom improvement, but 36.4% experienced unsteadiness with head rotation/fatigue.
- Spontaneous and positional nystagmus decreased significantly over time.
- Caloric stimulation revealed canal paresis in 63.6% of patients.
- The galvanic body sway test (GBST) showed abnormalities in 81.8% of patients.
- No significant correlation was found between final vertigo symptoms and prodromes, vertigo type, nystagmus, righting reflex, caloric stimulation, or GBST results.
Conclusions:
- Vestibular neuronitis can lead to persistent unsteadiness despite overall symptom improvement.
- The galvanic body sway test (GBST) frequently detects vestibular dysfunction in these patients.
- Further research is needed to clarify the prognostic value of the GBST in vestibular neuronitis.