The purpose of this study was to report two cases of light cupulopathy, and describe the characteristics of these cases and analysis the possible physiopathological mechanisms. The histories, clinical features, characteristics of nystagmus, and vestibular function, as well as audiologic results of the two patients with light cupula were analyzed. The two patients showed persistent geotropic direction changing positional nystagmus(DCPN)in the supine head roll tests. The null plane was present when the head was turn slightly towards affected side. Canalith repositioning maneuver was not effective. A mild sensorineural hearing loss was found on the involved ear in one patient but not in the other. The vestibular functions of two patients were abnormal. The characteristics of nystagmus with light cupulopathy are persistent geotropic DCPN with a null plane. The clinical features are similar with the horizontal semicircular canal canalolithasis. Canalith repositioning maneuver is not recommended for its ineffectiveness.
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| http://dx.doi.org/10.3760/cma.j.issn.1673-0860.2017.03.009 | DOI Listing |
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[Observation on nystagmus characteristics and curative effect of patients with light cupulopathy].
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
June 2020
Department of Otology，First Hospital of Qinhuangdao，Qinhuangdao，066000，China.
To describe the characteristics of nystagmus in patients with Light Cupulopathy and to investigate its therapeutic effect. The Supine roll test in our hospital's otology clinic showed persistent DCPN in 26 patients, who received Supine roll test, null-point position test, and prone-supine test. All patients were treated with barbecue maneuver.
View Article and Find Full Text PDFDifferences in the Head Roll Test, Bow and Lean Test, and Null Plane between Persistent and Transient Geotropic Direction-Changing Positional Nystagmus.
J Clin Med
December 2019
Department of Otorhinolaryngology-Head and Neck Surgery, Dongtan Sacred Heart Hospital, College of Medicine, Hallym University, #7 Keunjaebong-gil, Gyeonggi-do, Hwaseong 18450, Korea.
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.
Is the modified cupulolith repositioning maneuver effective for treatment of persistent geotropic direction-changing positional nystagmus?
Eur Arch Otorhinolaryngol
July 2018
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.
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.
View Article and Find Full Text PDFUtility of the bow and lean test in predicting subtype of benign paroxysmal positional vertigo.
Laryngoscope
November 2018
Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea.
Objectives/hypothesis: To investigate the role of the bow and lean test (BLT) in the diagnosis of benign paroxysmal positional vertigo (BPPV).
Study Design: Retrospective case-control study.
Methods: Between March 2015 and June 2017, we enrolled 113 patients with posterior semicircular canal (PSCC) BPPV, 74 patients with lateral semicircular canal (LSCC) canalolithiasis, 53 patients with LSCC cupulolithiasis, and 32 patients with light cupula.
[Light cupulopathy: persistent direction changing positional nystagmus with a null plane].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
March 2017
Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
The purpose of this study was to report two cases of light cupulopathy, and describe the characteristics of these cases and analysis the possible physiopathological mechanisms. The histories, clinical features, characteristics of nystagmus, and vestibular function, as well as audiologic results of the two patients with light cupula were analyzed. The two patients showed persistent geotropic direction changing positional nystagmus(DCPN)in the supine head roll tests.
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