Research in Vestibular Science

Two Cases of Pediatric Pneumolabyrinth with Traumatic Tympanic Membrane Perforation after Penetrating Injury: Yeon Seok You, Ji Hoon Koh, Byeong Jin Kim, Eun Jung Lee; Res Vestib Sci. 2019;18(3):83-86. Published online September 15, 2019; DOI: https://doi.org/10.21790/rvs.2019.18.3.83

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Abstract PDF: Pneumolabyrinth is an uncommon condition in which air is present in the vestibule or cochlear. It is rarely found, even in otic capsule violating fractures or in transverse fracture of the temporal bone. So far, there is no consensus on management of pneumolabyrinth. We describe 2 new cases of pneumolabyrinth by penetrating injury with traumatic tympanic membrane perforation. They presented whirling vertigo with moderate conductive hearing loss. Temporal bone computed tomography clearly demonstrated the presence of air in the vestibule and cochlear.

Dizziness after Traumatic Brain Injury: Neurological Aspects: Young Seo Kim, Seon Jae Im, Hak Seung Lee; Res Vestib Sci. 2019;18(3):59-63. Published online September 15, 2019; DOI: https://doi.org/10.21790/rvs.2019.18.3.59

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Abstract PDF: Vertigo, dizziness, and disequilibrium are common symptoms following concussion or traumatic brain injury. Dizziness and vertigo may be the result of trauma to the peripheral vestibular system or the central nervous system, or, in some cases, may be due to anxiety, depression, or posttraumatic stress disorder; these mechanisms are not mutually exclusive. While most peripheral vestibular disorders can be identified by testing and examination, those without inner ear causes that have persisting complaints of dizziness and motion sickness are more difficult to understand and to manage. Some of these patients exhibit features compatible with vestibular migraine and may be treated successfully with migraine preventative medications. This paper reviews the neurological causes of persisting dizziness, the possible mechanisms, and the pathophysiology, as a framework for patient management and for future research.

Dizziness in Traumatic Brain Injury: Visual-Vestibular Dysfunction, Neurotological Approach: Seong-Hae Jeong; Res Vestib Sci. 2019;18(2):27-31. Published online June 15, 2019; DOI: https://doi.org/10.21790/rvs.2019.18.2.27

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Abstract PDF: Traumatic brain injury (TBI) could give rise to variable clinical manifestations based on the involved structures of our bodies. Although there are no structural abnormalities proven, the patients with mild TBI suffer from chronic dizziness and imbalance. Herein, I will discuss the visuo-vestibular interaction and neurotological finding in TBI, which could demonstrate the clue to the diagnosis and management in dizzy patients with TBI.

Injury Mechanism to Induce Traumatic Balance Disorder: Jeong Wook Kang, Jae-Yong Byun; Res Vestib Sci. 2019;18(1):1-7. Published online March 15, 2019; DOI: https://doi.org/10.21790/rvs.2019.18.1.1

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Abstract PDF: Many of the dizziness patients annually visit ENT (ear, nose, throat) clinics because the vestibular function is the major organ to keep body balance and belongs to the Otorhinolaryngology. Nevertheless, many otolaryngologists feel that it is not easy to access the dizziness patients. The reason is that dizziness is not a final diagnosis and it is necessary to start the diagnosis of dizziness and find out the cause. Also, the causes of dizziness belong to multiple medical departments. That is why we need to pay more attention. Among them, traumatic vertigo can be manifested in various ways depending on the injury site and mechanism, and it is often difficult to predict the medical prognosis. Therefore, this review article focuses on traumatic vertigo. In this paper, we discussed its epidemiology and mechanism to help clinicians to treat patients with traumatic vertigo.

Posttraumatic Peripheral Vertigo: Soyeon Yoon, Mi Joo Kim, Minbum Kim; Res Vestib Sci. 2018;17(4):125-129. Published online December 21, 2018; DOI: https://doi.org/10.21790/rvs.2018.17.4.125

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Abstract PDF: Posttraumatic vertigo can be defined as the vertiginous disorder occurred after head and neck trauma without other pre-existing vestibular disorder. Central, peripheral, and combined deficits might cause this condition. Especially, various peripheral vestibulopathies are possible causes of posttraumatic vertigo; benign paroxysmal positional vertigo, temporal bone fracture, perilymphatic fistula, labyrinthine concussion, posttraumatic hydrops, and cervical vertigo. Since the differential diagnosis of the posttraumatic vertigo is often difficult, it is essential to acquire knowledge of their pathophysiology and clinical features. In this review, peripheral vestibulopathy as the possible causes of posttraumatic vertigo were described according to the current literature.

Two Cases of Barotraumatic Perilymph Fistula Mimicking Atypical Benign Paroxysmal Positional Vertigo with Sudden Hearing Loss: Jung Joo Lee, Gwanghui Ryu, Il Joon Moon, Won Ho Chung; Res Vestib Sci. 2015;14(1):26-31.

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Abstract PDF: Barotraumatic perilymph fistula is difficult to diagnose and needs diagnosis of suspicion. Symptoms like hearing loss, tinnitus, ear fullness and positional dizziness can develop following barotrauma such as valsalva, nose blowing, straining and diving, etc. We reported 2 cases of perilymph fistula following barotrauma. The patients developed hearing loss, tinnitus and ear fullness followed by sudden onset of positional dizziness mimicking benign paroxysmal positional vertigo (BPPV). On positional tests, the direction of nystagmus has changed over time. In addition, the characteristics of nystagmus on positional test were not similar to typical BPPV, which showed longer duration of nystagmus, no reversibility and no fatigability. We concluded that barotraumatic perilymph fistula could present as hearing loss with positional dizziness mimicking sudden hearing loss with BPPV. The differential diagnostic points were history of barotrauma, time sequence of development of hearing loss and positional dizziness, and atypical positional nystagmus unlike BPPV.

Superior Semicircular Canal Dehiscence Syndrome Presenting with Sudden Deafness and Vertigo after Trauma: Seong Il Kang, Sunjoo Lee, Ji Soo Kim, Ja Won Koo; Res Vestib Sci. 2013;12(4):132-135.

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Abstract PDF: Superior semicircular canal dehiscence syndrome (SCDS) is characterized by cochleovestibular hyper-responsiveness symptoms including sound- and pressure- evoked vertigo and oscillopsia, autophony, hyperacusis and ear fullness. The typical audiometric feature of SCDS is known as conductive hearing loss at low frequency. A 43-year-old man presented with unilateral sudden deafness after several events of heading during soccer game. High-resolution temporal bone computed tomography revealed a dehiscence of superior canal encased by superior petrous sinus. We reviewed audio-vestibular findings in this patient and speculated potential pathogenic mechanisms of sudden deafness in SCDS with literature review.

Factors Affecting Treatment of Benign Paroxysmal Positional Vertigo: Yoon Kyoung So, Won Ho Chung, Sung Hyun Boo, Young Jun Chung, Hyun Seok Lee, Woo Young Lee, Ki Nam Park; J Korean Bal Soc. 2005;4(2):230-237.

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Abstract PDF: al vestibular loss, accompanying sudden SNHL, underlying disease such as hypertension or diabetes, change of involved canal during treatment course and number of treatment visits. Statistical analysis using Pearson χ2 test was performed.
Results
Three hundred thirty-one patients with BPPV who received treatment were identified from 2001 to 2005. 85.2% required one treatment visit, 12.4% required a second treatment visit, and 98.2% were successfully treated after three treatment visits. Variables such as bilateral disease, anterior canal BPPV, post-traumatic BPPV, duration of symptom before treatment and change of involved canal during treatment were significantly related with number of treatments.
Conclusion
Patients with anterior semicircular canal BPPV or bilateral BPPV or with recent head trauma or longer duration of symptom are more likely to require multiple visits for canalith repositioning.

The Analysis of Post Traumatic Benign Paroxysmal Positional Vertigo: Chang Hyun Cho, Dong Kyu Kim, Gyu Cheol Han, Eun Jeong Lee, Joo Hyun Woo, Ju Hyoung Lee; J Korean Bal Soc. 2005;4(1):17-25.

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Abstract PDF: Background
and Objectives :Benign paroxysmal positional vertigo (BPPV) has a lot of causes. Except idiopathic BPPV, the most common cause of BPPV was trauma. The aim of this study was to study its character, diagnosis, prognosis and treatment. Materials and Method : We retrospectively collected the 14 patients by reviewing charts, analyzing vestibular function tests.
Results
: Post traumatic BPPV had characters different from idiopathic BPPV in patient' sex ratio and age distribution. The mean age of patients was 40 years old, men were 11 women were 3. In the mechanisms of trauma, traffic accidents were 11, assault was 1, and fall down were 2. In types, posterior semicircular canal were 10, horizontal semicircular canal were 4. In origins, cupulolithiasis were 8, canalolithiasis were 6. Treatment and prognosis were similar to those of idiopathic BPPV.
Conclusion
: But origin, diagnostic criteria, treatment and prognosis are identical with idiopathic BPPV. Therefore, in evaluating post traumatic BPPV patients, we need correct diagnosis and treatment together by history taking, physical examination and vestibular function tests. And by this, we can treat idiopathic BPPV accurately, reduce expense and time for patients to return daily life.

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