A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN).

A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Research Abstract Details 

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A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Abstract Text:

K Harada,M Oda,M Yamamoto,T Nomura,S Ohbayashi,C Kitsuda,

We observed 9 cases of BPPV developed after vestibular neuronitis. The interval between the onset of BPPV and vestibular neuronitis ranged from 2 weeks to 20 years. All cases were examined for critical head position which provoked vertigo, non-gaze nystagmus, positional and positioning nystagmus and caloric nystagmus. No characteristic signs and symptoms could be observed. The function of the posterior canal is thought to be necessary to provoke positional vertigo. Thus in BPPV after vestibular neuronitis the function of the posterior canal would presumably have been preserved to some degree. The first possibility is that the function of the posterior canal was not impaired in spite of the damage of the lateral canal. The fact that each canal differs in involvement in vestibular neuronitis may be explained by the difference in the blood supply or the innervation between lateral and posterior canals. If only the artery or nerve which is related to the lateral canal is damaged and the artery or nerve to the posterior canal is not involved, then the function of the posterior canal is preserved. So BPPV may occur soon after the disappearance of severe vertigo. The second possibility is that if the posterior canal had been damaged together with the lateral canal and the functions are recovering, BPPV may occur some time after the onset of vestibular neuronitis. The locus of vestibular neuronitis is in the peripheral vestibular system and the extent and degree of the lesion vary, which may explain why there can be time difference of the recovery between the two canals.

A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Publishing Authors By Initials

K Harada,M Oda,M Yamamoto,T Nomura,S Ohbayashi,C Kitsuda,

For similar otorhinolaryngologic diseases: ear diseases: retrocochlear diseases: vestibulocochlear nerve diseases research abstracts see: otorhinolaryngologic diseases: ear diseases: retrocochlear diseases: vestibulocochlear nerve diseases research

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A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Acta oto-laryngologica. Supplementum

VOLUME: 503

Page Numbers: 61-3

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ISSN: 0365-5237

DAY: 13

MONTH: 02

YEAR: 1993

A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Information

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LANGUAGE: eng

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A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN). Keywords Mesh Terms:

KEYWORDS: Vestibulocochlear Nerve Diseases

MESH TERMS: physiopathology

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Grant and Affiliation Information for A clinical observation of benign paroxysmal positional vertigo (BPPV) after vestibular neuronitis (VN).

AFFILIATION: Department of Otolaryngology, Toho University School of Medicine, Tokyo, Japan.

Country: SWEDEN

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MEDLINETA: Acta Otolaryngol Suppl

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