Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo.

Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Research Abstract Details 

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Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Abstract Text:

M Iida,K Hitouji,M Takahashi,

A pendular rotation test in a head-tilted position (60 degrees backwards and rotated 45 degrees to either the right or left) was performed in 7 patients with benign paroxysmal positional vertigo (BPPV). Patients were rotated 360 degrees at a frequency of 0.1 Hz (maximum speed 114 degrees/s). The excitability of vertical semicircular canals was evaluated using this test procedure. Using an infrared CCD camera and a PC, evoked nystagmus was analyzed in order to determine the morbidity of BPPV. A statistically significant difference (p < 0.05) was found in the maximal slow-phase eye velocity between nystagmus from the anterior semicircular canal and nystagmus from the posterior semicircular canal. The excitability of the posterior semicircular canal in the affected ear was lower than that of the anterior semicircular canal. However, when vertigo and nystagmus disappeared, the difference in excitability was improved. The present results indicate some functional deterioration of the posterior semicircular canal in BPPV cases, suggesting the participation of both mechanical (dumping by mass) and organic (peripheral end organ) factors in causing morbidity.

Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Publishing Authors By Initials

M Iida,K Hitouji,M Takahashi,

For similar otorhinolaryngologic diseases: ear diseases: labyrinth diseases: vestibular diseases: vertigo research abstracts see: otorhinolaryngologic diseases: ear diseases: labyrinth diseases: vestibular diseases: vertigo research

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Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Acta oto-laryngologica. Supplementum

VOLUME: 545

Page Numbers: 35-7

Journal Abbreviation:

ISSN: 0365-5237

DAY: 13

MONTH: 02

YEAR: 2001

Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Information

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LANGUAGE: eng

NlmUniqueID: 370355

Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo. Keywords Mesh Terms:

KEYWORDS: Vertigo

MESH TERMS: physiopathology

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Grant and Affiliation Information for Vertical semicircular canal function: a study in patients with benign paroxysmal positional vertigo.

AFFILIATION: Department of Otorhinolaryngology, Tokai University School of Medicine, Kanagawa, Japan.

Country: Norway

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MEDLINETA: Acta Otolaryngol Suppl

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