Please use this identifier to cite or link to this item: https://repositorio.unifesp.br/handle/11600/42578
Title: Benign Paroxysmal Positional Vertigo: Concomitant Involvement of Different Semicircular Canals
Authors: Tomaz, Andreza [UNIFESP]
Ganança, Mauricio Malavasi [UNIFESP]
Ganança, Cristina Freitas [UNIFESP]
Ganança, Fernando Freitas [UNIFESP]
Caovilla, Heloisa Helena [UNIFESP]
Harker, Lee [UNIFESP]
Universidade Federal de São Paulo (UNIFESP)
Univ Bandeirante Sao Paulo
Keywords: inner ear
semicircular canal
vertigo
Issue Date: 1-Feb-2009
Publisher: Annals Publ Co
Citation: Annals Of Otology Rhinology And Laryngology. St Louis: Annals Publ Co, v. 118, n. 2, p. 113-117, 2009.
Abstract: Objectives: We evaluated the simultaneous ipsilateral or contralateral involvement of the posterior and lateral, anterior and lateral, or posterior and anterior semicircular canals in patients with benign paroxysmal positional vertigo (BPPV).Methods: The files of 2,345 patients with BPPV were analyzed.Results: Single-canal BPPV occurred in 2,3 10 cases (98.5%) - unilaterally in 2,058 (89.1%) and bilaterally in 252 (10.9%). Multiple-canal BPPV occurred in 35 cases (1.5%). Of these 35 cases, there was simultaneous involvement of the posterior and lateral canals on the same side (23) or on opposite sides (9) in 32 cases (91.4%). Simultaneous involvement of the anterior canal on one side and the posterior canal on the opposite side occurred in 2 cases (5.7%), and that of the anterior canal on one side and the lateral canal on the opposite side occurred in 1 case (2.9%). All cases represented canalithiasis.Conclusions: Multiple-canal BPPV was rare, and usually involved canals on the same side; simultaneous involvement of the posterior and lateral canals was Much more common than involvement of the anterior and posterior canals or the anterior and lateral canals. Trauma increased the risk for multiple-canal BPPV, but not the risk for bilateral single-canal BPPV. Cupulolithiasis was not a factor in multiple-canal BPPV.
URI: http://repositorio.unifesp.br/11600/42578
ISSN: 0003-4894
Other Identifiers: http://dx.doi.org/10.1177/000348940911800206
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