Nystagmus in patients with lateral semicircular canal dysplasia.
Saved in:
| Title: | Nystagmus in patients with lateral semicircular canal dysplasia. |
|---|---|
| Authors: | Choi, BoYoon (AUTHOR), Lee, Dong-Han (AUTHOR), Shin, Jung Eun (AUTHOR), Kim, Chang-Hee (AUTHOR) |
| Source: | Acta Oto-Laryngologica. Dec2020, Vol. 140 Issue 12, p971-976. 6p. |
| Subjects: | Dizziness, Inner ear, Nystagmus, Semicircular canals |
| Geographic Terms: | South Korea |
| Abstract (English): | Dizziness is not a common symptom in the lateral semicircular canal (LSCC) dysplasia, and nystagmus findings has been rarely described in LSCC dysplasia. To investigate the characteristics of spontaneous and positional nystagmus in patients with LSCC dysplasia. Patterns of spontaneous and positional nystagmus of twelve patients with LSCC dysplasia, who visited our clinic with a chief complaint of dizziness, were investigated. LSCC dysplasia was observed unilaterally in 4, and bilaterally in 8 patients. Non-rotatory dizziness with various onset times was the most common description of dizziness, and unilateral caloric weakness was observed in 82% of patients. Direction-fixed nystagmus, in which the direction of spontaneous nystagmus was same with that of positional nystagmus, was observed in 9 patients, and direction-changing positional nystagmus, in which the direction of nystagmus was changed from that of spontaneous nystagmus by positioning maneuvers, was observed in 3 patients, of whom down-beating or direction-changing spontaneous nystagmus was observed in one patient each. While direction-fixed horizontal nystagmus is the most commonly observed type of nystagmus in LSCC dysplasia, atypical spontaneous nystagmus, such as down-beating nystagmus or direction-changing spontaneous nystagmus, may be observed in patients with bilateral LSCC dysplasia [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): | 背景：头晕不是外侧半规管（LSCC）发育不良的常见症状, 眼球震颤很少发现于LSCC发育不良。 目的：探讨LSCC发育不良患者的自发性和位置性眼球震颤的特征。。 方法：12例LSCC发育异常的患者的自发性和位置性眼球震颤的类型, 对谁主诉头晕去了我们的诊所进行了调查。 结果：单侧观察到LSCC异常增生4例, 双侧观察到8例。发作时间不同的非旋转性头晕是头晕的最常见描述, 在82％的患者中观察到单侧热量低弱。在9例患者中观察到定向性眼球震颤, 其中自发性眼球震颤的方向与位置性眼球震颤的方向相同, 并且方向改变性眼球震颤的眼球震颤的方向从原来的方向改变了。在3例患者中观察到通过定位动作引起的自发性眼球震颤, 其中一例患者发生下击或变向自发性眼球震颤。 结论：虽然方向固定的水平眼球震颤是LSCC发育不良中最常见的眼球震颤类型, 但双侧LSCC发育不良的患者可能会出现非典型的自发性眼球震颤, 例如下击或变向自发性眼球震颤。 [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | Dizziness is not a common symptom in the lateral semicircular canal (LSCC) dysplasia, and nystagmus findings has been rarely described in LSCC dysplasia. To investigate the characteristics of spontaneous and positional nystagmus in patients with LSCC dysplasia. Patterns of spontaneous and positional nystagmus of twelve patients with LSCC dysplasia, who visited our clinic with a chief complaint of dizziness, were investigated. LSCC dysplasia was observed unilaterally in 4, and bilaterally in 8 patients. Non-rotatory dizziness with various onset times was the most common description of dizziness, and unilateral caloric weakness was observed in 82% of patients. Direction-fixed nystagmus, in which the direction of spontaneous nystagmus was same with that of positional nystagmus, was observed in 9 patients, and direction-changing positional nystagmus, in which the direction of nystagmus was changed from that of spontaneous nystagmus by positioning maneuvers, was observed in 3 patients, of whom down-beating or direction-changing spontaneous nystagmus was observed in one patient each. While direction-fixed horizontal nystagmus is the most commonly observed type of nystagmus in LSCC dysplasia, atypical spontaneous nystagmus, such as down-beating nystagmus or direction-changing spontaneous nystagmus, may be observed in patients with bilateral LSCC dysplasia [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 00016489 |
| DOI: | 10.1080/00016489.2020.1804615 |
