The Light Cupula: An Emerging New Concept for Positional Vertigo
Journal of Audiology & Otology
;
: 1-5, 2018.
Artigo
em Inglês
| WPRIM
| ID: wpr-740319
ABSTRACT
Benign paroxysmal positional vertigo (BPPV) is the most common type of positional vertigo. A canalolithiasis-type of BPPV involving the lateral semicircular canal (LSCC) shows a characteristic direction-changing positional nystagmus (DCPN) which beats towards the lower ear (geotropic) on turning the head to either side in a supine position. Because geotropic DCPN in LSCC canalolithiasis is transient with a latency of a few seconds, the diagnosis can be challenging if geotropic DCPN is persistent without latency. The concept of “light cupula” has been introduced to explain persistent geotropic DCPN, although the mechanism behind it requires further elucidation. In this review, we describe the characteristics of the nystagmic pattern in light cupula and discuss the current evidence for possible mechanisms explaining the phenomenon.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Nistagmo Fisiológico
/
Canais Semicirculares
/
Vertigem
/
Decúbito Dorsal
/
Diagnóstico
/
Orelha
/
Vertigem Posicional Paroxística Benigna
/
Cabeça
Tipo de estudo:
Estudo diagnóstico
Idioma:
Inglês
Revista:
Journal of Audiology & Otology
Ano de publicação:
2018
Tipo de documento:
Artigo
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