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Cervical Vestibular Evoked Myogenic Potential and Ocular Vestibular Evoked Myogenic Potential in Patients With Vestibular Neuritis and Acute Viral Labyrinthitis
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Il Ha Moon, Chan Goo Lee, Moo Kyun Park, Jong Dae Lee
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Res Vestib Sci. 2012;11(3):92-96.
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 Abstract
- Background and Objectives: Vestibular neuritis predominantly affects the superior branch of the vestibular nerve, resulting in vertigo. Acute viral labyrinthitis occurs when an infection affects both vestibulo-cochlear nerve and labyrinth, resulting in hearing changes as well as vertigo. The purpose of study is to identify there is a difference of cervical vestibular evoked myogenic potentials (cVEMP) and ocular VEMP (oVEMP) in patients with vestibular neuritis and acute viral labyrinthitis. Materials and Methods: cVEMP and oVEMP tests using 500-Hz tone-burst stimuli were performed on patients with vestibular neuritis and acute viral labyrinthitis. Pure tone audiometry, caloric test and subjective visual vertical (SVV) were performed in all patients. We compared the VEMP results, SVV, caloric test in patients with vestibular neuritis and acute viral labyrinthitis. Results: Abnormal cVEMP responses were detected in 2 (20%) patients with vestibular neuritis and 5 (100%) patients with labyrinthitis. Abnormal oVEMP responses were detected in 9 patients (90%) with vestibular neuritis and 5 (100%) patients with labyrinthitis. oVEMP abnormalities is correlated with caloric test and subjective visual vertical in patients with vestibular neuritis and labyrinthits. Conclusion: Our results shows that the response of cVEMP and oVEMP between patients with vestibular neuritis and acute viral labyrinthitis is different. We can infer that oVEMP response to air-conducted sound is different vestibular origin compared to cVEMP and may originate from utricle.
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Prognosis of Hearing According to the Presence of Recurrent Vertigo in Meniere’s Disease
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Chan Goo Lee, Moo Kyun Park, Jong Dae Lee, Ji Yun Park, Tae Kyeong Lee, Ki Bum Sung
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Res Vestib Sci. 2011;10(4):134-137.
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Abstract
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- Background and Objectives: In Meniere’s disease, the relationship between the vertigo attacks and prognosis of hearing remains unclear. Our study aimed to elucidate the possible role of recurrent vertigo in the prognosis of hearing in Meniere’s disease. Materials and Methods: The medical records of 53 patients with definite Meniere’s disease over 2 years follow-up were analyzed retrospectively and we analyzed the changes of vertigo and hearing over time. Results: While 49% of patients who were treated conservatively experienced recurrent vertigo attacks, 40% of patients did not have an episode of vertigo during the follow-up. Worsening of hearing and fluctuation were found in about 30% and 26%, respectively. There is no obvious coincidence in the course of vertigo and hearing. Conclusion: The prognosis of hearing dose not depend on the the presence of recurrent vertigo in Meniere’s disease.
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