Benign paroxysmal positional vertigo showing sequential translations of four types of nystagmus

Imai, Toshio; Takeda, Noriaki; Uno, Atsuhiko; Horii, Arata; Kitahara, Tadashi; Nishiike, Suetaka; Higashi-Shingai, Kayoko; Inohara, Hidenori

doi:10.1016/j.anl.2011.10.007

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…Finally, patients with persistent geotropic directionchanging positional nystagmus in the supine lateral head positions in the absence of central neurologic signs and with normal results in cerebral imaging have been described [37,44]. This type of nystagmus is neither compatible with mobile otoconia in a semicircular canal nor with dense otoconia attached to a cupula.…”

Section: Pathophysiologymentioning

confidence: 99%

“…This type of nystagmus is neither compatible with mobile otoconia in a semicircular canal nor with dense otoconia attached to a cupula. However, there seems to be an association between persistent geotropic direction-changing positional nystagmus and canalolithiasis and cupulolithiasis, as some of these patients have developed classical variants of BPPV at follow-up [37,44]. It has been suggested that this phenomenon may be due to changes of the density of the cupula or the endolymph [37,44], but this remains speculative.…”

Section: Pathophysiologymentioning

confidence: 99%

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Benign paroxysmal positional vertigo: Diagnostic criteria

Brevern

Bertholon

Brandt

et al. 2015

VES

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557

502

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Abstract. This article presents operational diagnostic criteria for benign paroxysmal positional vertigo (BPPV), formulated by the Committee for Classification of Vestibular Disorders of the Bárány Society. The classification reflects current knowledge of clinical aspects and pathomechanisms of BPPV and includes both established and emerging syndromes of BPPV. It is anticipated that growing understanding of the disease will lead to further development of this classification.

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Section: Pathophysiologymentioning

confidence: 99%

Section: Pathophysiologymentioning

confidence: 99%

Benign paroxysmal positional vertigo: Diagnostic criteria

Brevern

Bertholon

Brandt

et al. 2015

VES

Self Cite

557

502

View full text Add to dashboard Cite

show abstract

“…Consequently, torsional/vertical (down beating) nystagmus should occur in the sitting position, because the cupula of superior canal moves toward the ampullofugal direction. Imai et al [15] assumed that the denatured cupula or otolith imbalance is the pathophysiology of geotropic nystagmus with long time constant. However, otolith imbalance theory cannot explain the cessation of nystagmus in a neutral position, and there is no evidence that utricular dysfunction causes horizontal eye movements.…”

Section: Discussionmentioning

confidence: 99%

A 7-Year-Old Boy with Light Cupula of the Horizontal Semicircular Canal

Ichijo¹

2014

IJOHNS

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Report of childhood positional vertigo is very rare. We present a 7-year-old boy who revealed persistent direction-changing geotropic positional nystagmus. In the supine position, horizontal nystagmus toward the left continued as long as the position was maintained. However, it ceased when the head was turned to the right side by 45˚. With greater head turn (right-ear-down), nystagmus toward the right lasted for more than 1 minute. In the left-ear-down position, horizontal nystagmus toward the left occurred and lasted for more than 1 minute. After the disappearance of positional nystagmus, we detected canal paresis of the right ear by caloric test. We considered that the pathophysiology of the persistent type of geotropic nystagmus is a result of light debris cupulolithiasis of the horizontal canal.

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“…Persistent geotropic DCPN can be explained by a light cupula that is less dense than in the surrounding endolymph [1,2]. Another explanation for light cupula is a reversible lesion such as a denatured cupula or utricular imbalance of the same ear [18]. In this study we determined the affected side as the side of the first neutral point, but the bow and lean test might have been helpful to confirm the affected side in some patients [19].…”

Section: Pathophysiology Of Dcpnmentioning

confidence: 93%

Newly classified horizontal canal positional nystagmus and its treatment

Hiruma¹,

Ohara²,

Koizuka³

2018

Clin Med Invest

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Objectives: Horizontal canal type BPPV shows various types of direction-changing positional nystagmus (DCPN). The aim of this study was to classify into 4 types by the duration (persistent without latency or transient with latency) and the direction (apogeotropic or geotropic) and describe the details of each type and to discuss each pathophysiological mechanism and treatment. Study design and setting: Retrospective case seriesParticipants: We conducted a retrospective case series study in 50 patients with DCPN. Positional nystagmus was examined using an infrared camera or Frenzel glasses. Main outcome measures:We compared clinical outcome parameters (frequency, affected side, sex, treatment) among the 4 types.

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Benign paroxysmal positional vertigo showing sequential translations of four types of nystagmus

Cited by 10 publications

References 13 publications

Benign paroxysmal positional vertigo: Diagnostic criteria

Benign paroxysmal positional vertigo: Diagnostic criteria

A 7-Year-Old Boy with Light Cupula of the Horizontal Semicircular Canal

Newly classified horizontal canal positional nystagmus and its treatment

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