PMID: 16639275Apr 28, 2006Paper

Three-dimensional analysis of benign paroxysmal positional nystagmus in a patient with anterior semicircular canal variant

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
Takao ImaiTakeshi Kubo

Abstract

To show the positional nystagmus in a patient who had suffered from benign paroxysmal positional vertigo (BPPV) that was thought to be caused by involvement of the anterior semicircular canal (ASCC) (A-BPPV). Retrospective case report. City hospital. The present study reports a rare case of A-BPPV in a 41-year-old woman. The patient is 41-year-old woman who developed a positional vertigo after playing volleyball on March 22, 2005 and consulted our hospital the next day. When left Dix-Hallpike maneuver was performed, she showed a positional nystagmus of which fast phase direction of the torsional component was clockwise while that of the vertical component was downward. We plotted the slow phase eye velocity of the positional nystagmus during the left Dix-Hallpike maneuver on three-dimensional coordinates that showed the axis of the positional nystagmus to be perpendicular to the plane of the right ASCC. These results suggested that the patient was suffering from A-BPPV.

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Citations

Apr 23, 2013·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Borivoj B BabicNenad A Arsovic
Feb 4, 2016·Acta Oto-laryngologica·Takao ImaiHidenori Inohara
Nov 22, 2011·Auris, Nasus, Larynx·Sachiko AokiYasuko Arai
May 17, 2013·Acta Oto-laryngologica·Takao ImaiHidenori Inohara
Sep 13, 2011·Acta Oto-laryngologica·Kayoko Higashi-ShingaiHidenori Inohara
Apr 16, 2011·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Augusto Pietro CasaniStefano Sellari-Franceschini
Sep 14, 2007·Acta Oto-laryngologica·Takao ImaiTakeshi Kubo

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