English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A 56-year-old man complained of a hearing loss and tinnitus in his right ear after short intense exposure to a high level of sound. Although he had no complaints of vertigo or dizziness, his neuro-otological examination revealed apogeotropic direction changing type of positional nystagmus. An audiogram showed right high-frequency sensorineural hearing loss. An eye tracking test (ETT) and an optokinetic nystagmus (OKN) test showed no abnormalities. A caloric test showed normal responses in both ear sides. One week after the exposure to a high level of sound, the positional nystagmus completely disappeared.Apogeotropic direction changing type of positional nystagmus is generally considered to be a phenomenon observed in patients with central vestibular lesion. However, physical examination and laboratory tests of this patient suggested that he suffered from only a peripheral vestibular impairment. From these results, apogeotropic direction changing type of positional nystagmus observed in this patient resulted from an impair-ment of the peripheral vestibular system.

A Case Report on the Apogeotropic Direction Changing Type of Positional Nystagmus Following Acoustic Trauma.