J Korean Bal Soc.  2006 Jun;5(1):49-54.

Otolith Function Tests in Patient with Vestibular Neuritis

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University School of Medicine, Seoul, Korea. hpark@kuh.ac.kr

Abstract

BACKGROUND AND OBJECTIVES: Vestibular evoked myogenic potentials (VEMP) test provides a useful method for assessment of saccule function and the functional integrity of the inferior vestibular nerve, and subjective visual vertical (SVV) abnormalities are presumably related to a lesion of the utricle. The aim(s) of this study were to measure otolith function using SVV and VEMP tests, and to define the influence of the otolithic organs in patients suffering from vestibular neuritis. MATERIALS AND METHOD: From September 2005 to January 2006, twelve patients who received treatment in hospital and also had been tested for caloric test, subjective visual vertical (SVV) and vestibular evoked myogenic potential (VEMP) tests with unilateral vestibular neuritis were enrolled. All the tests were done within 8 days after the onset of their symptoms, simultaneously. The SVV was measured in 34 normal subjects as well as in patients.
RESULTS
Eight of 12 patients showed abnormal tilt to the lesion side in SVV test, and five of 8 patients showed no VEMP on the affected side. There was no correlation between SVV tilts and unilateral weakness (UW) in caloric tests. Two patients with abnormal UW (54, 82%) showed normal finding in SVV & VEMP tests. One patient with abnormal UW (83%) and SVV tilts (18.04Degree) to the lesion side was normal in VEMP test. Two patients with abnormal UW (28, 37%) and no response in VEMP test were normal in SVV test.
CONCLUSION
Our results demonstrate that the incidence of abnormal results were 62.5, 66.7% in VEMP and SVV tests in acute stage of vestibular neuritis, respectively. There was no correlation between the abnormal results of the tests and these findings suggest that impairment of the otolithic function is depending on the extent and/or the localization of vestibular neuritis.

Keyword

Vestibular neuritis; Otolith; Vestibular function tests; Subjective visual vertical; Vestibular evoked myogenic potentials

MeSH Terms

Caloric Tests
Humans
Incidence
Otolithic Membrane*
Saccule and Utricle
Vestibular Evoked Myogenic Potentials
Vestibular Function Tests
Vestibular Nerve
Vestibular Neuronitis*
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