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Ocular Vestibular Evoked Myogenic Potential in Vestibular Neuritis Patients: Comparative Study with Cervical Vestibular Evoked Myogenic Potential and Subjective Visual Vertical
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Su Il Kim, Young Min Ha, Sang Hoon Kim, Ji Hyun Chung, Moon Suh Park, Jae Yong Byun
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Res Vestib Sci. 2014;13(4):102-107.
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- Background
and Objectives: Subjective visual vertical (SVV) reflects utricle and
superior vestibular neural functions, and cervical vestibular evoked myogenic
potentials (cVEMP) reflect saccule and inferior vestibular neural functions. But,
origin and characteristics of ocular VEMP (oVEMP) remain controversial, especially
in case of evoked by air conducted sound (ACS). Thus, the aim of this study
was to identify the origin and characteristics of oVEMP by comparing with
various otolith function tests. Materials and Methods: Forty vestibular neuritis
patients were enrolled from September 2012 to January 2013 in this study. We
examined cVEMP, oVEMP using 500 Hz air-counducted sounds. And, we
measured static and dynamic SVV. Results: Abnormal cVEMP responses were
observed in 6 (15%) patients, and abnormal oVEMP responses were observed
in 28 (70%) patients. Abnormal static and dynamic SVV were observed in 18
(45%), 35 (87.5%) patients, respectively. There was strong correlation between
oVEMP and dynamic SVV (p=0.009). Conclusion: ACS oVEMP responses
showed different tendency from cVEMP responses in vestibular neuritis patients,
but similar tendency with results of dynamic SVV. The results suggest that origin
of oVEMP is different from that of cVEMP and maybe utricle and superior
vestibular neuron.
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Herpes Simplex Encephalitis Suffered Rotatory Dizziness as a Primary Symptom
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Sun A Choi, Jae Yong Byun, Sun Kyu Lee
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Res Vestib Sci. 2013;12(2):67-71.
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Abstract
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- Herpes simplex encephalitis (HSE) is rare, serious sporadic encephalitis associated with high mortality in untreated cases. Although cognitive impairment with fever could be the clue of diagnosis, various symptoms can make it difficult to be diagnosed. Dizziness is one of the most frequent symptoms ENT doctors can encounter. Authors experienced the HSE patient suffered rotatory sense of dizziness as a primary symptom and treated the patient successfully without major complication. We reported our experience and findings of vestibular function test of patient. It could be helpful to other ENT doctors who encounter similar patients.
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A Human Immunodeficiency Virus-Positive Patient with Dizziness and Peripheral Facial Palsy
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Eun Woong Ryu, Jae Yong Byun, Hoon Jung, Moon Suh Park
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Res Vestib Sci. 2010;9(1):38-42.
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Abstract
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- Various neurological complications occur in association with human immunodifiency virus (HIV) infection. These complications occur at all stages of infection and any level of central and peripheral nervous system. Neurological complications, such as aseptic meningitis, encephalopathy, neuropathy, myelopathy, and brachial neuritis, develop in association with primary HIV infection. We here in report a case of peripheral facial palsy with suspicious peripheral vertigo manifested as initial symptoms of primary HIV infection.
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Clinical Features and Treatment Pattern of Migrainous Vertigo in Korea: A Nationwide Prospective Multicenter Study
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Seong Ki Ahn, Kyusik Kang, Ja Won Koo, Kyu Sung Kim, Beom Gyu Kim, Byung Kun Kim, Ji Soo Kim, Kyoung Ho Park, Shi Nae Park, Eun Ho Park, Hong Ju Park, Jae Yong Byun, Myung Whan Suh, Ki Bum Sung, Sun Young Oh, Chung Ku Rhee, Tae Kyeong Lee, Seong Hae Jeong, Won Ho Chung, Chang Il Cha, Sung Won Chae, Eui Kyung Goh
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Res Vestib Sci. 2009;8(2):122-131.
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Abstract
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- Background and Objectives It is being increasing recognized that the morbidities of migraine and balance disorders are interrelated. In fact, migrainous vertigo (MV) is one of frequent causes of recurrent vertigo in patients presenting to specialized dizziness clinics. Nevertheless, not many studies have reported clinical manifestations and treatment. Therefore, the aim of study was designed to assess clinical features and treatment patterns by a nationwide multicenter study. Materials and Methods Patients between 9 and 74 years of age who visited 17 Korean tertiary referral centers and 1 clinic from February to March 2009 were investigated using two forms of questionnaires. Results Overall, 318 patients with MV were enrolled. MV was responsible for ~8.45% of visits to the specialized dizziness clinics. One hundred seventy-five of these patients had definite MV and were included in assessing the clinical features. Vertigo characteristics of patients with definite MV were various. Vertigo was regularly as-sociated with headache in 87% of the patients. The duration of vertigo ranged from seconds to days. For the treatment patterns, an acute and prophylactic therapies were carried in most clinics. There were no differences in either acute or prophylactic therapies between department of neurology and otorhinolaryngology. Conclusions The results of this study suggest that MV the clinical features of MV also varies in Korea. In addition, most clinics provide similar patterns of practice in treatment for MV. The syndrome of MV deserves further research activity as it is relatively common and clinically relevant.
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Subjective Visual Vertical during Eccentric Rotation in Acute Vestibular Neuritis Patients
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Kee Hwan Kwon, Moon Suh Park, Jae Yong Byun
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J Korean Bal Soc. 2008;7(2):182-187.
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- Background and objective: By assessing unilateral utricular function at the acute unilateral vestinuloneuritis (Acute UVN), we sought to determine the ability of the subjective visual vertical (SVV) during eccentric rotation (dynamic SVV) in localizing the site of the lesion in unilateral vestibular neuritis (UVN).
Methods: The static SVV and dynamic SVV of fifteen patients diagnosed with acute UVN were enrolled within 10 days of onset (average 7 days). First, the static SVV was measured in a dark booth without rotation. The dynamic SVV was measured during rotation with an eccentric displacement of the head to 3.5 cm from the vertical rotation axis during a constant velocity of 300°/s.
Results: In the acute stage of UVN, the static SVV showed an increase in deviation to the side of the lesion compared to those of normal subjects. Also, we found 73% of abnormal findings in Acute UVN patients by assessing static conventional SVV. The dynamic SVV had a statistically significant increase in deviation to the side of the lesion compared to those of normal subjects and 93% patients showed beyond normal range.
Conclusions: The dynamic SVV would be an effective method in the diagnosis and localization of acute unilateral vestibularneuritis,
Key words: Acute vestibular neuritis, Subjective visual vertical, Eccentric rotation
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