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Qin W, Liu Z, Zhu Y, Zhang X, Xu J, Zhou T, Wei L, Fang Y, Chang L. Clinical characteristics and lateralization of the horizontal semicircular canal light cupula. Front Neurol 2024; 15:1357195. [PMID: 38450079 PMCID: PMC10914934 DOI: 10.3389/fneur.2024.1357195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/12/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction Positional vertigo and nystagmus are the main symptoms and signs of dizziness, respectively. Despite the clinical utility of the supine roll test (SRT) and null point (NP) in diagnosing light cupula, a type of positional vertigo, there exists a notable gap in the literature concerning the comprehensive evaluation of lateralization values based on various nystagmus characteristics and the intensity of direction-changing positional nystagmus (DCPN) in the SRT, particularly in comparison to the NP. Additionally, limited data on abnormal canal paresis (CP) in light cupula patients underscores the need for further research with a larger patient population to elucidate this mechanism. This study aims to investigate the characteristics of positional nystagmus and lateralization of the horizontal semicircular canal (HSCC) light cupula, which is a type of positional vertigo and nystagmus that is poorly understood. Methods Eighty-five patients (17 males, 68 females; mean age, 60.9 years) with light cupula were reviewed. We summarized the characteristics of spontaneous nystagmus and positional nystagmus, including supine positioning nystagmus, bow nystagmus, and lean nystagmus. Then, the side of the NP was identified as the affected side, and the values of the fast phase direction of the spontaneous nystagmus, supine positioning nystagmus, bow nystagmus, and lean nystagmus, as well as the intensity of the DCPN in the SRT, were used to diagnose the affected sides. Caloric testing was also performed for some patients. Results Light cupula was observed in 5.7% of the patients with positional nystagmus. The frequencies of supine positioning nystagmus (88.2%), bow nystagmus (90.6%), and lean nystagmus (83.5%) were higher than spontaneous nystagmus (61.2%) (p < 0.001). The second NP (NP2) (92.9%) and third NP (NP3) (83.5%) were readily detected, affecting the left and right sides in 38 and 47 patients, respectively. Lateralization through the fast phase directions of bow nystagmus and lean nystagmus did not significantly differ from that of NP (all p > 0.05). However, the accuracy rate of lateralization through the sides with more vigorous DCPN in the SRT was 63.5%, significantly lower than through NP (p < 0.001). Particularly in patients with supine positioning nystagmus (n = 75), the rate was only 58.7% (p < 0.001). However, the rate was 100% in patients without supine positioning nystagmus (n = 10). Among the 70 patients who underwent caloric testing, 37 had abnormal CP, and the sides of the reduced caloric reaction were ipsilateral to the affected sides of the light cupula in 83.8% of the patients. Conclusion Besides utilizing the NP to determine the affected side, the fast phase direction of the bow nystagmus or lean nystagmus can also aid in identification. However, a simple comparison of the intensity of DCPN in SRT cannot provide accurate lateralization, especially in patients with supine positioning nystagmus. There is a high incidence of CP on the affected side of the light cupula.
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Affiliation(s)
| | | | | | | | | | | | | | - Yi Fang
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
| | - Liying Chang
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
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Lee DH, Kim TH, Jang M, Kim CH. The Light Cupula Phenomenon: A Scoping Review. Brain Sci 2023; 14:15. [PMID: 38248229 PMCID: PMC10813105 DOI: 10.3390/brainsci14010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/07/2023] [Accepted: 12/16/2023] [Indexed: 01/23/2024] Open
Abstract
Direction-changing positional nystagmus (DCPN), which refers to the change in the direction of nystagmus with different head positions, is a well-known characteristic of horizontal semicircular canal BPPV. The supine head roll test is commonly used to diagnose horizontal canal BPPV. However, persistent geotropic DCPN observed during this test cannot be explained by the conventional explanations of canalolithiasis or cupulolithiasis. To account for this unique nystagmus, the concept of a "light cupula" has been recently introduced. In this review, we provide an overview of the historical background, clinical features and diagnostic methods, proposed mechanisms, and treatment strategies associated with the light cupula phenomenon based on the available literature to date.
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Affiliation(s)
| | | | | | - Chang-Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute of Medical Science, Konkuk University School of Medicine, Konkuk University Medical Center, Seoul 05030, Republic of Korea; (D.-H.L.); (T.H.K.); (M.J.)
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Shigeno K. Subjective visual vertical deviation in patients with early-onset direction-changing horizontal positional nystagmus. Auris Nasus Larynx 2023; 50:48-56. [PMID: 35589462 DOI: 10.1016/j.anl.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 04/21/2022] [Accepted: 05/06/2022] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Otolithic dysfunction is investigated in cases of direction-changing horizontal positional nystagmus (DCHPN) due to peripheral vestibular disorders. METHODS The static-subjective visual vertical (S-SVV) was conducted in DCHPN cases within 48 h after onset. RESULTS The absolute values of S-SVV deviations of patients with Light cupula and lateral canal-benign paroxysmal positional vertigo-cupulolithiasis (L-BPPV-Cup) were significantly different from those of healthy subjects (p < 0.001, p < 0.05, respectively), whereas there were no significant differences in those of patients with L-BPPV-Canalolithiasis-geotropic (L-BPPV-Can-g) or L-BPPV-Can-ageotropic (L-BPPV-Can-a) versus healthy subjects. Significant differences were found in S-SVV (+: deviation to the affected side, -: deviation to the unaffected side) between patients with Light cupula and those with L-BPPV-Can-g, L-BPPV-Can-a and L-BPPV-Cup (p < 0.01, p < 0.05, and p < 0.001, respectively), as well as between those with L-BPPV-Can-g and L-BPPV-Cup (p < 0.01). The S-SVV in patients with Light cupula, L-BPPV-Can-g, and L-BPPV-Can-a deviated more to the affected side, whereas that in patients with L-BPPV-Cup deviated more to the unaffected side. CONCLUSION Mild otolithic dysfunctions were found in patients with DCHPN due to the presence of peripheral vestibular disorders within 48 h after onset. The extent of otolithic (utricular) disorders in patients with DCHPN is estimated in decreasing order as follows: Light cupula > L-BPPV-Cup > L-BPPV-Can-g and L-BPPV-Can-a. Many patients with L-BPPV-Cup likely suffer from disorders of the pars externa of the utricular macula, whereas many patients with L-BPPV-Can-g likely suffer from disorders of the pars interna of the utricular macula. L-BPPV-Can-a and L-BPPV-Can-g must be induced by a common mild utricular disorder.
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Affiliation(s)
- Kohichiro Shigeno
- Shigeno Otolaryngology Vertigo-Hearing Impairment Clinic, 1-21 Ougi-machi, Nagasaki 852-8132, Japan.
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Peng H, Wang L, Song H, Gao B, Yang Y, Lyu F. Clinical Characteristics of persistent geotropic horizontal direction-changing positional nystagmus: Experience in 189 participants. J Vestib Res 2023; 33:203-211. [PMID: 36776085 DOI: 10.3233/ves-220086] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND The etiology and mechanism of persistent geotropic horizontal direction-changing positional nystagmus (DCPN) are still unclear. Whether this pattern of nystagmus is a subtype of benign paroxysmal positional vertigo (BPPV) remains controversial. OBJECTIVE The goal of this study was to observe the clinical characteristics of persistent geotropic horizontal DCPN involving the lateral semicircular canal. METHODS The analysis was performed to participants with episodic positional vertigo in our clinic from 2014 to 2021. Participants were included via positional test. We observed and summarized the distribution data, vertigo history, follow-up tests, and recurrence situations of 189 persistent geotropic horizontal DCPN participants. RESULTS The mean age at the first time showing of persistent geotropic horizontal DCPN was 56±14.7 and more women than men were affected by persistent geotropic horizontal DCPN (female-to-male ratio 2.4 : 1). Overall, 58.7% (57/94) of participants who came for the first-week follow-up test were asymptomatic. Thirty-three participants experienced recurrence (female-to-male ratio: 4.5 : 1). Fifty-three (28.0%) participants experienced the conversion of the patterns of DCPN in the history, the follow-up tests and the recurrence compared to the first showing of persistent geotropic horizontal DCPN. 24(12.1%) participants still experienced persistent geotropic horizontal DCPN attack in the follow-up tests and the recurrences without benign paroxysmal positional vertigo history. CONCLUSION Persistent geotropic horizontal DCPN affected more women than men. The persistent geotropic horizontal DCPN that with conversion to transient geotropic horizontal DCPN or to persistent apogeotropic horizontal DCPN might be a subtype of BPPV or in a stage of BPPV process. However, the persistent geotropic horizontal DCPN without conversion might be an independent disease that is not related to BPPV.
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Affiliation(s)
- Hao Peng
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
| | - Liyi Wang
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
| | - Haitao Song
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
| | - Bo Gao
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
| | - Yi Yang
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
| | - Fan Lyu
- Department of Otolaryngology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, China
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Bal N, Altun M, Kuru E, Basoz Behmen M, Gedik Toker O. Light cupula phenomenon: a systematic review. THE EGYPTIAN JOURNAL OF OTOLARYNGOLOGY 2022. [DOI: 10.1186/s43163-022-00336-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractGeotropic direction-changing positional nystagmus (DCPN) is transient in lateral semicircular canal (LSSK) canalolithiasis; it usually cuts off within a minute and fatigues. However, a “light cupula” mechanism has been described for patients with positional vertigo who exhibit a persistent geotropic DCPN without delay or fatigue. When the cupula becomes lighter than the surrounding endolymph, deflection may occur in the cupula under the influence of gravity. The person experiences dizziness and persistent positional nystagmus can be observed while remaining in that position.In this review, studies investigating the “light cupula phenomenon,” which is a newly defined phenomenon in the literature, were compiled. A systematic literature search was conducted on the light cupula phenomenon in PubMed and Google Scholar databases to illuminate the clinical side of this new phenomenon and reveal its distinctive features. Turkish and English articles published between 2010 and 2021 were scanned; the thesis, reviews, and books were excluded from the study. Forty-eight articles were included in the study.Mechanisms underlying light cupula has been explained as the “heavier endolymph hypothesis” with increased endolymph specific gravity due to an acute attack such as labyrinth hemorrhage, insufficient inner ear perfusion, or inflammation in the inner ear; “lighter cupula hypothesis” based on alcohol acting on the cupula earlier and making it lighter than the endolymph; “light particle hypothesis” due to the buoyancy of light debris, which are degenerative, swollen, and inflammatory cells in the endolymph adhering to the cupula and the “altered endolymph/perilymph density ratio hypothesis” that the difference in density between perilymph and endolymph causes light cupula. The pathophysiology of the light cupula phenomenon is still unclear, but it can be thought that all the different hypotheses may be effective in this phenomenon. Therefore, nystagmus characteristics and clinical course should be considered in patients for a more effective diagnosis and treatment process. In addition, the results of the studies show that light cupula may not be an uncommon disease and that some patients with geotropic DCPN can often be misdiagnosed as canalolithiasis LSCC-BPPV.
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Lee J, Park JY, Shin JE, Kim CH. Direction-changing spontaneous nystagmus in patients with dizziness. Eur Arch Otorhinolaryngol 2022; 280:2725-2733. [PMID: 36454383 DOI: 10.1007/s00405-022-07761-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 11/21/2022] [Indexed: 12/04/2022]
Abstract
PURPOSE The present study aimed to investigate the clinical features of patients with direction-changing spontaneous nystagmus (DCSN) and gain insight into its underlying mechanisms. METHODS Medical records and vestibular function test results collected in our dizziness clinic between February 2013 and February 2020 were retrospectively reviewed. Spontaneous nystagmus was recorded while sitting upright using videonystagmography for 2 min to confirm the spontaneous changes in nystagmus direction. Causative disease diagnoses were based on the patients' clinical history, audiometry results, vestibular function tests, and imaging studies. RESULTS Of 4786 patients, DCSN was observed in 41 (0.86%). Causative disease diagnoses included vestibular neuritis (n = 9), lateral semicircular canal cupulopathy (n = 9), cerebellopontine angle tumor (n = 8), vestibular paroxysmia (n = 2), vestibular migraine (n = 2), vestibular nucleus infarction (n = 1), sudden sensorineural hearing loss with vertigo (n = 2), Meniere's disease (n = 2), Ramsay Hunt syndrome (n = 1), labyrinthine fistula due to middle ear cholesteatoma (n = 1), lateral semicircular canal dysplasia (n = 1), post tympanomastoidectomy dizziness (n = 1), and head trauma (n = 2). CONCLUSIONS Although the periodicity of DCSN could not be determined because of insufficiently long observation times, it was observed in various central and peripheral vestibulopathies. Careful examination of spontaneous nystagmus over a sufficient period may ensure the detection of DCSN when evaluating dizziness.
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邢 娟, 张 婷, 张 姝, 程 子, 张 少, 韩 鹏. [Significance of rapid axial roll test in determining the responsible semicircular canal for horizontal canal benign paroxysmal positional vertigo]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2022; 36:419-422. [PMID: 35822358 PMCID: PMC10128487 DOI: 10.13201/j.issn.2096-7993.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Indexed: 06/15/2023]
Abstract
Objective:To compare the diagnostic performance of the rapid axial roll test(RART) and the traditional roll test(SRT)in determining the responsible semicircular canal for horizontal canal benign paroxysmal positional vertigo(HC-BPPV). Methods:A total of 400 patients diagnosed with HC-BPPV from January 2020 to December 2020 were collected and randomly divided into two groups. Among them, there were 202 cases in the RART group and 198 cases in the SRT group. The patients in the two groups performed corresponding positional test respectively, and the following treatment was based on the types of induced nystagmus. The patients with typical HC-BPPV nystagmus underwent two rounds of modified Barbecure procedure. The diagnostic accuracies of the two positional tests in locating the responsible semicircular canal were evaluated by the elicitation rate of typical nystagmus. Finally, the effects of the two tests were evaluated by comparing the recovery rate of nystagmus between the two groups after repositioning procedures. Results:The elicitation rate of nystagmus in HC-BPPV patients by RART was significantly higher than that by SRT(χ²=10.73,P<0.01 ). The effectiveness of repositioning procedure by RART in HC-BPPV patients was significantly higher than that of SRT(χ²=6.08,P<0.05). Conclusion:RART could significantly improve the accuracy in determining the responsible semicircular canal in HC-BPPV, and future studies are warranted.
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Affiliation(s)
- 娟丽 邢
- 西安交通大学第一附属医院耳鼻咽喉头颈外科(西安,710048)Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710048, China
| | - 婷 张
- 西安交通大学第一附属医院耳鼻咽喉头颈外科(西安,710048)Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710048, China
| | - 姝 张
- 内蒙古医科大学附属第一医院耳鼻咽喉头颈外科Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Inner Mongolia Medical University
| | - 子君 程
- 西安交通大学第一附属医院耳鼻咽喉头颈外科(西安,710048)Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710048, China
| | - 少强 张
- 西安交通大学第一附属医院耳鼻咽喉头颈外科(西安,710048)Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710048, China
| | - 鹏 韩
- 西安交通大学第一附属医院耳鼻咽喉头颈外科(西安,710048)Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710048, China
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Wang Z, Zhang Y, Guo Q, Lin Y, Li JJ. Analysis of the nystagmus characteristics of cupula diseases: A case report. Medicine (Baltimore) 2022; 101:e28211. [PMID: 35029875 PMCID: PMC8735787 DOI: 10.1097/md.0000000000028211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/22/2021] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION Clinically, there is a kind of patients with positional vertigo or dizziness, which occurs when they turn left or right, look down or up, lie down or sit up. With a long duration and varying frequency, it is not consistent with the manifestations of benign paroxysmal positional vertigo (BPPV). In addition, the persistent geotropic direction-changing positional nystagmus (PG-DCPN) was observed in a supine head-roll test. PATIENT CONCERNS With no apparent trigger for visual rotation and a sense of self instability, an 81-year-old female patient had suffered from vertigo for 3 days. The vertigo occurred every day, lasting several minutes each time, and associated with head movements and changes in body position. In a supine head-roll test, it appeared persistent geotropic direction-changing positional nystagmus for a long time, without latency, fatigability and in the presence of 3 zero planes. DIAGNOSIS Light cupula. INTERVENTIONS Difenidol hydrochloride 25 mg orally 3 times/day for 2 weeks and betahistine hydrochloride 12 mg orally 3 times/day for 1 month were administered. OUTCOMES After 1 month of treatment, the patient's vertigo symptoms disappeared. And in the supine head-roll test, the persistent geotropic direction-changing positional nystagmus disappeared. CONCLUSION We report the characteristics of nystagmus produced in a typical patient with light cupula during the supine head-roll test. After reviewing the relevant literatures, we believe that a simpler method can be used to identify canalolithiasis and cupula disease, to distinguish light and heavy cupula, and to determine the pathological semicircular canal to which the lesion belongs.
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Affiliation(s)
- Zhaoxia Wang
- Department of Otolaryngology, Longgang E.N.T. Hospital & Shenzhen Key Laboratory of E.N.T., Institute of E.N.T. Shenzhen, China
| | - Yang Zhang
- Aerospace Balance Medical Center, Chinese PLA Air Force Medical Center, Beijing, China
| | - Qiang Guo
- Department of Otolaryngology & Head and Neck Surgery, Xijing Hospital, Air Force Medical University, Xi’an, Shaanxi, PR China
| | - Ying Lin
- Department of Otolaryngology & Head and Neck Surgery, Xijing Hospital, Air Force Medical University, Xi’an, Shaanxi, PR China
| | - Juan-Juan Li
- Department of Otolaryngology, Longgang E.N.T. Hospital & Shenzhen Key Laboratory of E.N.T., Institute of E.N.T. Shenzhen, China
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Shigeno K, Ogita H, Funabiki K. Variants of benign paroxysmal positional vertigo in relation to head position during sleep. J Vestib Res 2021; 32:39-47. [PMID: 34633334 DOI: 10.3233/ves-180616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Patients with posterior- and lateral-(canal)-benign paroxysmal positional vertigo (BPPV)-canalolithiasis sleep in the affected-ear-down head position. Posterior-BPPV-canalolithiasis typically affects the right than left ear; sleeping in the right-ear-down head position may be causal. OBJECTIVE To investigate the relationship between habitual head position during sleep and the onset of BPPV variants. METHODS Among 1,170 cases of BPPV variants with unknown etiology, the affected ears, habitual head positions during sleep based on interviews, and relationships among them were investigated. RESULTS Posterior-BPPV-canalolithiasis and lateral-BPPV-canalolithiasis-geotropic affected the right ear significantly more often. Significantly more patients with posterior-BPPV-canalolithiasis and lateral-BPPV-canalolithiasis-apogeotropic habitually slept in the right-ear-down head position. Patients with posterior- and lateral-BPPV-canalolithiasis and light cupula were more likely to sleep habitually in the affected-ear-down position than in the healthy-ear-down head position; no relationship was observed in patients with posterior- and lateral-BPPV-cupulolithiasis. In patients with posterior-BPPV-canalolithiasis and lateral-BPPV-canalolithiasis-geotropic, the proportion of right-affected ears in those sleeping habitually in the right-ear-down head position was significantly greater than that for the left-affected ear. CONCLUSIONS A habitual affected-ear-down head position during sleep may contribute to BPPV-canalolithiasis and light cupula onset, but not BPPV-cupulolithiasis onset. However, habitual sleeping in the right-ear-down head position cannot explain the predominance of right-affected ears.
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Affiliation(s)
- Kohichiro Shigeno
- Shigeno Otolaryngology Vertigo-Hearing Impairment Clinic, Nagasaki City, Japan
| | - Hideaki Ogita
- Department of Otolaryngology, Shiga General Hospital, Moriyama City, Japan
| | - Kazuo Funabiki
- Institute for Biomedical Research and Innovation, Kobe City, Japan
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Si L, Shen B, Li Y, Ling X, Li K, Yang X. Clinical Characteristics of Patients with Persistent Apogeotropic and Persistent Geotropic Direction-Changing Positional Nystagmus. J Clin Neurol 2021; 17:443-454. [PMID: 34184453 PMCID: PMC8242324 DOI: 10.3988/jcn.2021.17.3.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 10/12/2020] [Accepted: 10/12/2020] [Indexed: 11/17/2022] Open
Abstract
Background and Purpose This study aimed to determine the clinical features, diagnosis, and treatment of patients with persistent geotropic (pG) and persistent apogeotropic (pAG) direction-changing positional nystagmus (DCPN). Methods This retrospective study included 30 patients with pG-DCPN and 44 patients with pAG-DCPN. All patients underwent neurological and neurotological examinations, including an evaluation of gaze-evoked nystagmus, eye-movement tests, and assessments of limb ataxia and balance, as well as magnetic resonance imaging to exclude central causes. The characteristics of positional nystagmus were detected using the supine roll test (SRT) and bow-and-lean test (BLT). The null point (NP) at which the nystagmus disappeared was determined. All patients were treated with the barbecue maneuver, and treatment efficacy was evaluated immediately, 1 week, and 1 month after treatment. Results The history of diseases associated with atherosclerosis, peripheral vestibular disorders, otological disease, and migraine differed significantly between patients with pG-DCPN and pAG-DCPN. The affected sides of persistent horizontal DCPN can be determined using the SRT and the BLT, while determining the second NP and vestibular function as well as performing an audiological evaluation can be used to assist in identifying the affected side. The efficacy rates immediately and 1 week after treatment with the barbecue maneuver were higher in patients with pAG-DCPN than in patients with pG-DCPN. Conclusions pAG-DCPN was more compatible with the characteristics of cupulolithiasis, and pG-DCPN was more likely to be associated with a light cupula rather than canalolithiasis. pAG-DCPN was more likely to be accompanied by a disease associated with atherosclerosis, while pG-DCPN was often accompanied by autoimmune-related diseases and a history of migraine. The associations between pAG-DCPN, pG-DCPN, and the above-mentioned diseases need to be clarified further. The canalith-repositioning maneuver was effective in patients with pAG-DCPN and ineffective in patients with pG-DCPN, but most cases of pG-DCPN are self-limiting.
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Affiliation(s)
- Lihong Si
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Bo Shen
- The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuanzhe Li
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Xia Ling
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Kangzhi Li
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Xu Yang
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China.
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Lagos AE, Ramos PH, Aracena-Carmona K, Novoa I. Conversion from geotropic to apogeotropic direction changing positional nystagmus resulting in heavy cupula positional vertigo: case report. Braz J Otorhinolaryngol 2020; 87:629-633. [PMID: 33334708 PMCID: PMC9422597 DOI: 10.1016/j.bjorl.2020.10.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 10/29/2020] [Indexed: 11/18/2022] Open
Affiliation(s)
- Antonia Elisa Lagos
- Pontificia Universidad Católica de Chile, Otolaryngology Department, Santiago, Chile.
| | - Phoebe Helena Ramos
- Pontificia Universidad Católica de Chile, Otolaryngology Department, Santiago, Chile
| | - Karina Aracena-Carmona
- Pontificia Universidad Católica de Chile, Otolaryngology Department, Otolaryngology Laboratory Technologist, Santiago, Chile; Pontificia Universidad Católica de Chile, Faculty of Medicine, Health Sciences Department, Speech Therapy Career, Santiago, Chile
| | - Iván Novoa
- Pontificia Universidad Católica de Chile, Faculty of Medicine, Health Sciences Department, Speech Therapy Career, Santiago, Chile
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Zhang SL, Tian E, Xu WC, Zhu YT, Kong WJ. Light Cupula: To Be Or Not to Be? Curr Med Sci 2020; 40:455-462. [PMID: 32681250 DOI: 10.1007/s11596-020-2199-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/09/2020] [Indexed: 01/09/2023]
Abstract
Benign paroxysmal positional vertigo (BPPV) represents the most common form of positional vertigo. It is caused by dislodged otoconia that freely float in the semicircular canals (canalolithiasis) or attach to the cupula (cupulolithiasis). A cupulolithiasis-type (or a heavy cupula-type) of BPPV implicating the lateral semicircular canal (LSCC) exhibits persistent ageotropic direction-changing positional nystagmus (DCPN) in a head-roll test. However, in some cases, unlike any type of BPPV, persistent geotropic DCPN cannot be explained by any mechanisms of BPPV, and don't fit the current classifications. Recently, the notion of light cupula has been introduced to refer to the persistent geotropic DCPN. In this study, we looked at the clinical features of light cuplula and discussed the possible mechanisms and therapeutic strategies of the condition. The notion of light cupula is a helpful addition to the theory of peripheral positional vertigo and nystagmus.
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Affiliation(s)
- Su-Lin Zhang
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Institute of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - E Tian
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wen-Chao Xu
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yu-Ting Zhu
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei-Jia Kong
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Institute of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Key Laboratory of Neurological Disorders of Education Ministry, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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13
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Kim SK, Li SW, Hong SM. Differences in the Head Roll Test, Bow and Lean Test, and Null Plane between Persistent and Transient Geotropic Direction-Changing Positional Nystagmus. J Clin Med 2019; 9:jcm9010073. [PMID: 31892175 PMCID: PMC7019752 DOI: 10.3390/jcm9010073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 11/17/2022] Open
Abstract
Background: Persistent geotropic direction-changing positional nystagmus (DCPN) has the characteristics of cupulopathy, but its underlying pathogenesis is not known. We investigated the relationship of the results of the head roll test, bow and lean test, and side of the null plane between persistent and transient geotropic DCPN to determine the lesion side of persistent geotropic DCPN and understand its mechanism. Methods: We enrolled 25 patients with persistent geotropic DCPN and 41 with transient geotropic DCPN. We compared the results of the head roll test, bow and lean test, and side of the null plane between the two groups. Results: The rates of bowing and leaning nystagmus were significantly higher in the persistent DCPN group. Only 16.0% of the persistent DCPN patients had stronger nystagmus in the head roll test and the null plane on the same side. The rates of the direction of bowing nystagmus in the bow and lean test and stronger nystagmus in the head roll test on the same side were also significantly lower in persistent DCPN than in transient DCPN. Conclusion: It was difficult to determine the lesion side in persistent geotropic DCPN using the direction of stronger nystagmus in the head roll test and null plane when the direction of the stronger nystagmus and null plane were opposite. Further study is needed to understand the position of the cupula according to head rotation and the anatomical position in persistent geotropic DCPN.
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Affiliation(s)
| | | | - Seok Min Hong
- Correspondence: ; Tel.: +82-31-8086-2670; Fax: +82-31-8086-2681
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14
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Comorbid Cupulolithiasis Is Rare in Patients With Horizontal Semicircular Canal Canalolithiasis. Otol Neurotol 2019; 41:e357-e362. [PMID: 31868781 DOI: 10.1097/mao.0000000000002540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Considering that otolith particles pass through the canal until attaching to the cupula in the canal-side horizontal semicircular canal (HSCC) cupulolithiasis, comorbidity of HSCC canalolithiasis and cupulolithiasis may occur. We aimed to investigate the incidence of comorbidity of cupulolithiasis in patients with HSCC canalolithiasis and to improve treatment efficacy. STUDY DESIGN Retrospective study. SETTING Tertiary referral academic center. PATIENTS Ninety-seven consecutive patients with HSCC canalolithiasis between March 2017 and March 2019 were included. MAIN OUTCOME MEASURES Coexistence of HSCC cupulolithiasis was hierarchically investigated. 1) Spontaneous reversal of initial nystagmus is observed bilaterally in a head-roll test (HRT), 2) nystagmus is in the same direction at each of the three times the supine position was tested, and 3) both bowing and leaning nystagmus with opposite direction are observed. RESULTS Of 97 patients with HSCC canalolithiasis, 2 patients (2%) had comorbid HSCC cupulolithiasis. CONCLUSIONS Although coexistence of HSCC canalolithiasis and cupulolithiasis should be considered when spontaneous reversal of nystagmus direction is observed without position change during a HRT, the incidence of coexistence is very low. However, canalith repositioning maneuvers for both canalolithiasis and cupulolithiasis should be performed in cases with comorbidity.
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15
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Ichijo H. Recurrence in patients with benign paroxysmal positional vertigo of the lateral semicircular canal. Auris Nasus Larynx 2019; 47:353-358. [PMID: 31753472 DOI: 10.1016/j.anl.2019.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 09/23/2019] [Accepted: 10/24/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVES There are 3 subtypes of lateral canal benign paroxysmal positional vertigo. Persistent geotropic positional nystagmus is due to a light cupula, heavy cupula produces apogeotropic positional nystagmus, and canalolithiasis accounts for transient geotropic positional nystagmus. The aims of this study were to determine the recurrence rate and to examine the number of times of recurrence in each of the 3 subtypes. METHODS Subjects were patients with light cupula (n = 47), heavy cupula (n = 48), and canalolithiasis (n = 45). We investigated the number of times of recurrence and determined the subtypes of a recurrent vertigo attack over the period of 5 years. RESULTS The subtype of a recurrent vertigo attack was not always the same as the subtype at the first visit. The recurrence rate of light cupula group was 72.3%, that of heavy cupula group was 20.8%, and that of canalolithiasis group was 28.9%. Some patients experienced recurrence more than once. The mean value and standard deviation of the number of times of recurrence in light cupula group was 2.5 ± 1.3 times, that in heavy cupula group was 1.5 ± 0.7 times, and that in canalolithiasis group was 1.5 ± 0.7 times. CONCLUSIONS The recurrence rate in patients with light cupula is much higher than that in patients with heavy cupula or canalolithiasis. The number of times of recurrence in patients with light cupula is greater than that in patients with heavy cupula or canalolithiasis.
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Affiliation(s)
- Hiroaki Ichijo
- Ichijo Ear, Nose and Throat Clinic, 3-2-1 Ekimae, Hirosaki 0368002 Japan.
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16
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Ichijo H. A new treatment (the affected-ear-up 90° maneuver) for benign paroxysmal positional vertigo of the lateral semicircular canal. Acta Otolaryngol 2019; 139:588-592. [PMID: 31066612 DOI: 10.1080/00016489.2019.1609700] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Background: Although several researchers have tried various kinds of canalith repositioning procedures for lateral canalolithiasis, a standard treatment has not been established. We have adopted 90° rotation, which is anatomically appropriate. Objective: To clarify the efficacy of the affected-ear-up 90° maneuver. Materials and methods: The subjects were 23 consecutive patients (15 females, 8 males) who revealed transient direction-changing geotropic positional nystagmus. After determining the affected side, we immediately performed the canalith repositioning procedure. To perform this maneuver: (1) Place the patient in the supine position. (2) Rotate the head toward the healthy side until 90° from the supine. (3) Sit up. (4) Ask the patient to remain upright with the chin down until going to bed. Results: Nineteen patients (83%) became symptom-free by only one maneuver. However, three patients converted to ipsilateral cupulolithiasis of the lateral canal, and one patient required a second maneuver. Conclusion: The affected-ear-up 90° maneuver is effective against lateral canalolithiasis.
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17
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Characteristics of positional nystagmus in patients with horizontal canal canalolithiasis or cupulopathy. J Neurol 2019; 266:2475-2480. [DOI: 10.1007/s00415-019-09435-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/13/2019] [Accepted: 06/13/2019] [Indexed: 10/26/2022]
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18
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Tang X, Huang Q, Chen L, Liu P, Feng T, Ou Y, Zheng Y. Clinical Findings in Patients With Persistent Positional Nystagmus: The Designation of "Heavy and Light Cupula". Front Neurol 2019; 10:326. [PMID: 31024424 PMCID: PMC6465512 DOI: 10.3389/fneur.2019.00326] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/15/2019] [Indexed: 11/20/2022] Open
Abstract
Objective: Direction-changing positional nystagmus (DCPN) had been observed as persistent horizontal apogeotropic and was considered as “cupulolithiasis or heavy cupula. ” Recently, the concept of “light cupula” exhibiting persistent geotropic DCPN has been introduced. However, the light cupula is not systematically described, while the identification and diagnosis of “light cupula” should be improved. Here we investigated the underlying characteristics and therapeutic options designed to the “light” and “heavy” cupula, respectively; and summarized the clinical characteristics and therapeutic effect in the two groups. Methods: A total of 359 cases with vertigo and bilateral DCPN were found in the supine roll test. Only 25 patients with persistent DCPN were enrolled and followed up. According to the direction of nystagmus, we further divided the patients into “heavy cupula” (apogeotropic) and “light cupula” (geotropic) groups. We compared the incidence, characteristics of nystagmus and the efficacy of repositioning maneuver in the two groups. Results: Nine patients with persistent horizontal geotropic DCPN were confirmed as “light cupula,” other 16 patients with persistent horizontal ageotropic DCPN were confirmed as heavy cupula. All 25 patients had null plane; the mean value and standard deviation of the null plane in light cupula and heavy cupula was 25.67 ± 9.31° and 27.06 ± 6.29°, respectively. The mean value and standard deviation of the termination plane in light cupula was 28.78 ± 10.00°, and 30.25 ± 6.53° in heavy cupula. There was no statistical significance between the two groups. We found that the direction of evoked nystagmus in the supine position was toward the intact side in light cupula, while in heavy cupula, it was toward the lesion side. The null plane appeared on the lesion side. For light cupula patients, the effect was not obvious at Day-7 after the treatment, however, treatment for most heavy cupula patients were effective. All patients recovered after 30 days of treatment. Conclusion: The null plane is crucial in determining the lesion side for light or heavy cupula. Although the short-term therapeutic effect of the light cupula is not as promising as the effect seen in heavy cupula, the long-term prognosis in both groups is comparable; with all patients recovered after 30 days of treatment. Study design: This is a retrospective cohort study.
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Affiliation(s)
- Xiaowu Tang
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Qiuhong Huang
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Ling Chen
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Peng Liu
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Tianci Feng
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Yongkang Ou
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
| | - Yiqing Zheng
- Department of Otolaryngology-Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Institute of Hearing and Speech-language Science, Sun Yat-Sen University, Guangzhou, China.,Xinhua College Sun Yat-Sen University, Guangzhou, China
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19
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Kim CH, Pham NC. Density difference between perilymph and endolymph: A new hypothesis for light cupula phenomenon. Med Hypotheses 2019; 123:55-59. [PMID: 30696592 DOI: 10.1016/j.mehy.2018.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/06/2018] [Accepted: 12/22/2018] [Indexed: 10/27/2022]
Abstract
Light cupula is an emerging concept accounting for positional nystagmus. It can be diagnosed when persistent geotropic direction-changing positional nystagmus (PG DCPN) is observed in a head-roll test. Although hypotheses explaining light cupula phenomenon such as "light debris", "lighter cupula", and "heavier endolymph" have been proposed, the mechanism underlying light cupula has not been clearly elucidated yet. In the present study, we proposed a new hypothesis accounting for light cupula, i.e., density difference between perilymph and endolymph could elicit characteristic PG DCPN in a head-roll test. We also discussed the mechanism how membranous canal containing endolymph became buoyant within the perilymphatic space under constant influence of gravity when the density of perilymph was higher than that of endolymph.
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Affiliation(s)
- Chang-Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea.
| | - Ngoc Chien Pham
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
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20
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Kim CH, Hong SM. Is the modified cupulolith repositioning maneuver effective for treatment of persistent geotropic direction-changing positional nystagmus? Eur Arch Otorhinolaryngol 2018; 275:1731-1736. [PMID: 29804128 DOI: 10.1007/s00405-018-5006-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/18/2018] [Indexed: 10/16/2022]
Abstract
OBJECTIVE Clinicians sometimes see patients with relatively persistent geotropic direction-changing positional nystagmus (DCPN) as a variant of lateral semicircular canal-benign paroxysmal positional vertigo (LSCC-BPPV). Recently, the concept of a "light cupula" in the lateral semicircular canal, exhibiting persistent geotropic DCPN, has been introduced. However, the underlying pathogenesis of light cupula is not known. We investigated the efficacy of a modified cupulopathy repositioning maneuver (mCuRM), designed to reduce light debris attached to the cupula in patients with persistent geotropic DCPN. STUDY DESIGN Retrospective cohort study. METHODS Participants included 65 patients with a persistent geotropic DCPN: 35 underwent treatment (mCuRM group), and 30 were followed-up but received no treatment (No CuRM group). We compared the therapeutic and survival rate of persistent geotropic DCPN between two groups. RESULTS On Day 1, the persistent geotropic DCPN did not resolve in either group. On the first and second follow-up days, persistent geotropic DCPN was observed in 28 (80%) and 21 (60%) of patients, respectively, in the mCuRM group, and in 28 (93.3%) and 24 (80%) patients, respectively, in the no mCuRM group. The differences between groups were not statistically significant. Furthermore, no between-group differences were found in the time from diagnosis to resolution of nystagmus, or the time from symptom onset to resolution of nystagmus. Kaplan-Meier analysis of the time course of persistent geotropic DCPN resolution from the day of diagnosis and day of symptom onset revealed no significant differences between the groups. CONCLUSION Our findings indicate that mCuRM had no therapeutic benefit for a persistent geotropic DCPN and suggest that the pathophysiology of persistent geotropic DCPN is less likely to be a light debris attached to the cupula.
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Affiliation(s)
- Chang-Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, South Korea
| | - Seok Min Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, #7 Keunjaebong-gil, Hwaseong, Gyeonggi-do, 18450, South Korea.
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21
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Kim MB, Hong SM, Choi H, Choi S, Pham NC, Shin JE, Kim CH. The Light Cupula: An Emerging New Concept for Positional Vertigo. J Audiol Otol 2017; 22:1-5. [PMID: 29061034 PMCID: PMC5784369 DOI: 10.7874/jao.2017.00234] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 11/22/2022] Open
Abstract
Benign paroxysmal positional vertigo (BPPV) is the most common type of positional vertigo. A canalolithiasis-type of BPPV involving the lateral semicircular canal (LSCC) shows a characteristic direction-changing positional nystagmus (DCPN) which beats towards the lower ear (geotropic) on turning the head to either side in a supine position. Because geotropic DCPN in LSCC canalolithiasis is transient with a latency of a few seconds, the diagnosis can be challenging if geotropic DCPN is persistent without latency. The concept of “light cupula” has been introduced to explain persistent geotropic DCPN, although the mechanism behind it requires further elucidation. In this review, we describe the characteristics of the nystagmic pattern in light cupula and discuss the current evidence for possible mechanisms explaining the phenomenon.
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Affiliation(s)
- Min-Beom Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Min Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Hyerang Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Seongjun Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Ngoc Chien Pham
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Jung Eun Shin
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Chang-Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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22
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Ichijo H. Affected-ear-up 120° maneuver for treatment of lateral semicircular canal benign paroxysmal positional vertigo. Eur Arch Otorhinolaryngol 2017; 274:3351-3357. [PMID: 28685312 DOI: 10.1007/s00405-017-4663-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/28/2017] [Indexed: 11/30/2022]
Abstract
Although several researchers have tried various canalith repositioning procedures for lateral canalolithiasis, a standard treatment has not been established. We adopt 120° rotation, which is anatomically appropriate because the principle of cure may be the fixing of pathological debris to the dark cells of the utricle. The aims of this study were to clarify the efficacy rate of the affected-ear-up 120° maneuver and to elucidate the appearance rate of lying-down nystagmus in patients with lateral canalolithiasis. The subjects were 31 patients (26 females, 5 males) who revealed transient direction-changing geotropic positional nystagmus. After determining the involved side, we performed the canalith repositioning procedure immediately. To perform this maneuver: (1) Place the patient in the supine position. (2) Rotate the head toward the healthy side until facing downward 120° from supine. (3) Sit up. (4) Ask the patient to remain upright with the chin down until going to bed. Twenty-nine patients (94%) became symptom free by only one maneuver. However, one patient converted to ipsilateral posterior cupulolithiasis, and another required a second maneuver. Lying-down nystagmus was found in 29 patients (94%), the transient type in 23 (74%), and the persistent type in 6 (19%). The direction of transient (not persistent) lying-down nystagmus was mostly toward the healthy side. These results suggest that the affected-ear-up 120° maneuver is effective and that lying-down nystagmus appears at a high rate.
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Affiliation(s)
- Hiroaki Ichijo
- Ichijo Ear, Nose and Throat Clinic, 3-2-1, Ekimae, Hirosaki, 036-8002, Japan.
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23
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Ichijo H. Caloric testing in patients with heavy or light cupula of the lateral semicircular canal. Laryngoscope Investig Otolaryngol 2016; 1:163-168. [PMID: 28894812 PMCID: PMC5510271 DOI: 10.1002/lio2.39] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2016] [Indexed: 11/16/2022] Open
Abstract
Objective To clarify whether the dysfunction of the lateral semicircular canal remain or not in patients with heavy or light cupula. Study Design Prospective case series. Methods The subjects were 19 patients with heavy cupula (3 males, 16 females; mean age, 62.8 years) and 14 patients with light cupula (5 males, 9 females; mean age, 63 years). Caloric testing (iced water) was carried out after complete disappearance of positional nystagmus. We measured maximum slow‐phase velocity and calculated asymmetry. Results In heavy cupula group, no one revealed canal paresis (CP) and 4 patients (21%) showed inverse CP (affected ear response is greater than healthy ear response). In light cupula group, 3 patients (21%) revealed CP. Conclusions Dysfunction of the lateral semicircular canal does not always remain in either heavy cupula or light cupula. The caloric response increases in some cases with heavy cupula. We can explain this phenomenon based on the hydrostatic pressure theory involved in ossicles. Level of Evidence 4.
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Affiliation(s)
- Hiroaki Ichijo
- Ichijo Ear, Nose and Throat Clinic, 3-2-1 Ekimae Hirosaki Japan 036-8002
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24
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Nuti D, Masini M, Mandalà M. Benign paroxysmal positional vertigo and its variants. HANDBOOK OF CLINICAL NEUROLOGY 2016; 137:241-56. [PMID: 27638076 DOI: 10.1016/b978-0-444-63437-5.00018-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Benign paroxysmal positional vertigo is a common labyrinthine disorder caused by a mechanic stimulation of the vestibular receptors within the semicircular canals. It is characterized by positional vertigo and positional nystagmus, both provoked by changes in the position of the head with respect to gravity. The social impact of the disease and its direct and indirect costs to healthcare systems are significant owing to impairment of daily activities and increased risk of falls. The first description of a patient with benign paroxysmal positional vertigo is from Robert Bárány in 1921, but the features of the syndrome and the diagnostic maneuver were well described by Dix and Hallpike in 1952. Since then, the gradually increasing interest of otolaryngologists and neurologists has led to a progressive advance in the knowledge of this labyrinthine disorder with regard to its epidemiologic, pathophysiologic, clinical, and therapeutic aspects. Despite the often effective diagnosis and treatment of most cases of benign paroxysmal positional vertigo, the physiopathologic explanations of the disease are mainly speculative. In this chapter, we describe the epidemiologic, pathophysiologic, clinical, and therapeutic aspects of benign paroxysmal positional vertigo.
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Affiliation(s)
- D Nuti
- Department of Otology and Skull Base Surgery, University of Siena, Siena, Italy.
| | - M Masini
- Department of Social, Political and Cognitive Sciences, University of Siena, Siena, Italy
| | - M Mandalà
- Department of Otology and Skull Base Surgery, University of Siena, Siena, Italy
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25
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Kim YW, Shin JE, Lee YS, Kim CH. Persistent Positional Vertigo in a Patient with Sudden Sensorineural Hearing Loss: A Case Report. J Audiol Otol 2015; 19:104-7. [PMID: 26413578 PMCID: PMC4582458 DOI: 10.7874/jao.2015.19.2.104] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/01/2015] [Accepted: 05/23/2015] [Indexed: 11/23/2022] Open
Abstract
Because inner ear organs are interconnected through the endolymph and surrounding endolymphatic membrane, the patients with sudden sensorineural hearing loss (SSNHL) often complain of vertigo. In this study, we report a patient with SSNHL accompanied by persistent positional vertigo, and serial findings of head-roll tests are described. At acute stage, head-roll test showed persistent geotropic direction-changing positional nystagmus (DCPN), which led to a diagnosis of SSNHL and ipsilateral light cupula. Although vertigo symptom gradually improved, positional vertigo lasted for more than 3 weeks. At this chronic stage, persistent apogeotropic DCPN was observed in a head roll test, which led to a diagnosis of the heavy cupula. Although the mechanism for the conversion of nystagmus direction from geotropic to apogeotropic persistent DCPN is unclear, the change of specific gravity of the endolymph might be one of the plausible hypothetical explanations.
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Affiliation(s)
- Yong Won Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Jung Eun Shin
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Yong-Sik Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Chang-Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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