Peripheral-vestibular spontaneous nystagmus analysis of reproducibility and methodologies

1980 ◽  
Vol 226 (4) ◽  
pp. 225-237 ◽  
Author(s):  
Ulrich Reker
Keyword(s):  
Spontaneous Nystagmus ◽  
Nystagmus Analysis

scholarly journals Characteristic difference between irritative nystagmus and paralytic nystagmus - Analysis of spontaneous nystagmus and positional nystagmus.

1986 ◽  
Vol 45 (2) ◽  
pp. 91-100
Author(s):  
Kaoru Ishikawa ◽  
Jiro Hozawa ◽  
Shigeki Kamata ◽  
Keiji Fukuoka ◽  
Shuji Ohta ◽  
...  
Keyword(s):  
Spontaneous Nystagmus ◽  
Positional Nystagmus ◽  
Characteristic Difference ◽  
Nystagmus Analysis

Subjective Evaluation of Balance by the Dizziness Handicap Inventory Does Not Predict Fall Risk in Older Adults Visiting Otolaryngology Clinics

2021 ◽  
pp. 000348942098797
Author(s):  
Iku Abe-Fujisawa ◽  
Yukihide Maeda ◽  
Soshi Takao ◽  
Shin Kariya ◽  
Kazunori Nishizaki
Keyword(s):  
Older Adults ◽  
Postural Balance ◽  
Fall Risk ◽  
Spontaneous Nystagmus ◽  
Anxiety And Depression ◽  
Published Data ◽  
Objective Data ◽  
Subjective Symptoms ◽  
Characteristic Analysis ◽  
Dizziness Handicap Inventory

Objectives: Subjective symptoms of dizziness in older adults are affected not only by objective data such as postural balance, but also by complex psychological factors. Published data analyzing how simultaneous evaluations of both objective and subjective assessments of balance can predict fall risk remain lacking. This study examined how fall risk can be predicted based on both objective data for balance and hearing and subjective symptoms of dizziness among older adults visiting otolaryngology clinics. Methods: Medical charts of 76 patients ≥65 years old with dizziness/vertigo who visited the otolaryngology clinic were reviewed. Objective data were evaluated by postural balance (posturographic data with eyes open and closed, and one-leg standing test), spontaneous nystagmus, and mean hearing levels. Subjective handicap associated with dizziness/vertigo was assessed using the Dizziness Handicap Inventory (DHI). Subjective mental status of anxiety and depression were assessed using the Hospital Anxiety and Depression Scale (HADS). Information on history (cardiovascular diseases) and fall accidents within the preceding year was collected using an in-house interview sheet. Results: Objective data on postural balance did not correlate with subjective symptoms on DHI or HADS ( P > .05, Pearson’s correlation coefficient). Adjusted logistic regression modeling with the outcome of incident falls revealed that poor postural balance significantly predicted fall risk ( P < .05; 4.9 [1.4-16.8] per 10-cm2 increment). Nystagmus tended to be associated with fall risk. In contrast, DHI score did not predict fall risk ( P = .43; 1.0 [0.9-1.03]). Receiver operating characteristic analysis proposed a cut-off for postural sway with eyes closed >6.1 cm2 as optimal to predict falls in patients with nystagmus (AUC, 0.74; 95% confidence interval, 0.48-0.997). Conclusion: Poor postural balance is associated with increased fall risk after adjusting for subjective symptoms in older adults at otolaryngology clinics. Conversely, the self-perceived dizziness handicap of DHI score is an insufficient tool to evaluate their fall risk.

Recovery of subjective visual horizontal after unilateral vestibular deafferentation by intratympanic instillation of gentamicin

2006 ◽  
Vol 16 (1-2) ◽  
pp. 69-73 ◽  
Author(s):  
Yoshinari Takai ◽  
Toshihisa Murofushi ◽  
Munetaka Ushio ◽  
Shinichi Iwasaki
Keyword(s):  
Healthy Subjects ◽  
Time Course ◽  
Early Stage ◽  
Ccd Camera ◽  
The Other ◽  
Spontaneous Nystagmus ◽  
Vestibular Evoked Myogenic Potentials ◽  
Normal Range ◽  
Intratympanic Gentamicin ◽  
Unilateral Vestibular Deafferentation

The time course of the recovery of subjective visual horizontal (SVH) after unilateral vestibular deafferentation by intratympanic instillation of gentamicin was studied. Six patients who underwent intratympanic gentamicin instillation therapy for Meniere's disease (1 man and 5 women, 32 to 69 years of age) were enrolled in this study. For comparison, SVH in 23 healthy subjects (12 men and 11 woman, 23 to 48 years of age) was also measured. The mean ± SD of SVH in healthy subjects was 0.0 ± 1.1 deg. All of the 6 patients showed significantly deviated SVH toward the injected side-down at the early stage after the therapy. Although one patient showed recovery of SVH to the normal range 25 days after the injection, the other patients required more time for recovery. Three patients did not show recovery to the normal range after 1 year. On the other hand, spontaneous nystagmus observed using an infrared CCD camera in total dark disappeared after 35 days (median). Patients who had normal vestibular evoked myogenic potentials before the therapy showed a tendency of delay of recovery of SVH. The reasons why the recovery of SVH took longer than the disappearance of spontaneous nystagmus are discussed in this report.

Spontaneous nystagmus in central nervous disease

1983 ◽  
Vol 8 (4) ◽  
pp. 241-243 ◽  
Author(s):  
K. ZILSTORFF ◽  
S. VESTERHAUGE ◽  
J. TOXMAN
Keyword(s):  
Spontaneous Nystagmus ◽  
Nervous Disease

Asymmetric Optokinetic Afterresponse in Patients with Vestibular Neuritis

1991 ◽  
Vol 1 (3) ◽  
pp. 279-289
Author(s):  
Krister Brantberg ◽  
Måns Magnusson
Keyword(s):  
Vestibular Function ◽  
Vestibular Compensation ◽  
Vestibular Neuritis ◽  
Spontaneous Nystagmus ◽  
Positional Nystagmus ◽  
Optokinetic Afternystagmus ◽  
Vestibular Lesion ◽  
Caloric Response

The symmetry of primary and secondary optokinetic afternystagmus (OKAN I and OKAN II, respectively) was studied in 14 patients with vestibular neuritis, as well as in 50 normals. The patients were examined at onset of symptoms and at follow-up 3 and 12 months later. At onset, OKAN was found mainly to reflect the spontaneous nystagmus. Although the spontaneous nystagmus disappeared in all patients within 3 months, both OKAN I and OKAN II was asymmetric at the 3- and 12-month check-ups. OKAN beating toward the lesioned ear was weaker than the OKAN beating toward the healthy ear. Thus, the asymmetric vestibular function was reflected not only in the OKAN I, but also by an asymmetry in OKAN II. Between the 3- and 12-month check-ups, asymmetry in OKAN declined, even among those patients who showed no improvement in caloric response during that time. The decreasing asymmetry in OKAN with time after lesion was, however, related to the disappearance of a positional nystagmus. Hence, the results may be interpreted as suggesting OKAN not only to be affected by vestibular side-difference, but also to be modified by the process responsible for vestibular compensation following a peripheral vestibular lesion.

Direction-changing spontaneous nystagmus in cerebellopontine angle tumour

2022 ◽  
Vol 95 ◽  
pp. 118-122
Author(s):  
Hamin Jeong ◽  
Dong-Han Lee ◽  
Jung Eun Shin ◽  
Chang-Hee Kim
Keyword(s):  
Cerebellopontine Angle ◽  
Spontaneous Nystagmus ◽  
Cerebellopontine Angle Tumour
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