Journal of Yeungnam Medical Science

Hyung Gyun Na

2 Articles

Current diagnosis and treatment of vestibular neuritis: a narrative review: Chang Hoon Bae, Hyung Gyun Na, Yoon Seok Choi; J Yeungnam Med Sci. 2022;39(2):81-88. Published online August 9, 2021; DOI: https://doi.org/10.12701/yujm.2021.01228

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Vertigo is the sensation of self-motion of the head or body when no self-motion is occurring or the sensation of distorted self-motion during an otherwise normal head movement. Representative peripheral vertigo disorders include benign paroxysmal positional vertigo, Ménière disease, and vestibular neuritis. Vestibular neuritis, also known as vestibular neuronitis, is the third most common peripheral vestibular disorder after benign paroxysmal positional vertigo and Ménière disease. The cause of vestibular neuritis remains unclear. However, a viral infection of the vestibular nerve or ischemia of the anterior vestibular artery is known to cause vestibular neuritis. In addition, recent studies on immune-mediated mechanisms as the cause of vestibular neuritis have been reported. The characteristic clinical features of vestibular neuritis are abrupt true-whirling vertigo lasting for more than 24 hours, and no presence of cochlear symptoms and other neurological symptoms and signs. To accurately diagnose vestibular neuritis, various diagnostic tests such as the head impulse test, bithermal caloric test, and vestibular-evoked myogenic potential test are conducted. Various treatments for vestibular neuritis have been reported, which are largely divided into symptomatic therapy, specific drug therapy, and vestibular rehabilitation therapy. Symptomatic therapies include generalized supportive care and administration of vestibular suppressants and antiemetics. Specific drug therapies include steroid therapy, antiviral therapy, and vasodilator therapy. Vestibular rehabilitation therapies include generalized vestibular and customized vestibular exercises.

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Clinical significance of saccade test, smooth pursuit test, and optokinetic nystagmus test in nystagmography: Yoon Seok Choi, Hyung Gyun Na, Si Youn Song, Yong Dae Kim, Chang Hoon Bae; Yeungnam Univ J Med. 2017;34(1):29-36. Published online June 30, 2017; DOI: https://doi.org/10.12701/yujm.2017.34.1.29

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Abstract PDF

BACKGROUND
Saccade test, smooth pursuit test, and optokinetic nystagmus test are clinically useful tests to accurately diagnose vertigo. However, there have only been a few studies regarding a correlation between the anatomical site of the lesion and the abnormality of eyeball movement in patients with vertigo. METHODS: The medical records of 97 patients with vertigo between January 2006 and June 2008 were reviewed retrospectively. We classified many kinds of abnormalities regarding the saccade test, smooth pursuit test and optokinetic nystagmus test into several categories and analyzed the localizing lesion of vertigo. RESULTS: According to the saccade test, both total saccade abnormality (S-total) and slow velocity of saccade (S-type 3) were shown to be significantly higher in the central lesion of vertigo. According to the smooth pursuit test, symmetrical unidirectional smooth pursuit abnormality (SP-type 2) was observed to be significantly higher in the peripheral lesion over vertigo. Moreover, according to the optokinetic nystagmus test, total optokinetic nystagmus abnormalities (OKN-total) were shown to be significantly useful findings in the diagnosis of the central lesion of vertigo. The coexisting abnormalities of all three tests (S+SP+OKN abnormalities) were shown to be significantly higher in the central lesion of vertigo. CONCLUSION: These results suggest that all these tests, saccade test, smooth pursuit test, and optokinetic nystagmus test, are very useful to distinguish between the central lesion and the peripheral lesion of vertigo. However, these tests are not beneficial in localizing the central lesion of vertigo.

Citations

Citations to this article as recorded by

Current diagnosis and treatment of vestibular neuritis: a narrative review
Chang Hoon Bae, Hyung Gyun Na, Yoon Seok Choi
Journal of Yeungnam Medical Science.2022; 39(2): 81. CrossRef
Dizziness in Patients With Obstructive Sleep Apnea
Jae Rim Kim, Soo Ryun Park, Hea Ree Park, Eun Yeon Joo
Journal of Sleep Medicine.2022; 19(2): 39. CrossRef

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