Pressure testing for superior canal dehiscence syndrome

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Identifier SCDS_voice_over
Title Pressure testing for superior canal dehiscence syndrome
Subject Valsalva; Superior canal dehiscence syndrome
Creator Tony Brune, DO, Departments of Neurology, The Johns Hopkins School of Medicine; Daniel R. Gold, DO, Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, The Johns Hopkins School of Medicine
Description Superior semicircular canal dehiscence syndrome (SCDS) is caused by a third mobile window in the inner ear. This allows for transmission of sound or pressure to the superior canal. Tragal compression and/or glottic and pinched nose Valsalva may provoke vertigo and vertical-torsional nystagmus in the plane of the superior (anterior) canal. As an example, a patient with right SCDS may have downbeat-torsional (towards right ear) nystagmus provoked by pinched nose Valsalva, which is an excitatory pattern of nystagmus (see video, Nystagmus and vertigo are also commonly triggered by loud environmental noises, or provoked by loud tones in the clinic.
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2018-01
Format video/mp4
Rights Management Copyright 2018. For further information regarding the rights to this collection, please visit:
Collection Neuro-ophthalmology Virtual Education Library: NOVEL
Language eng
ARK ark:/87278/s69p71c6
Setname ehsl_novel_gold
Date Created 2018-03-19
Date Modified 2018-12-04
ID 1307322
Reference URL
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