Pressure Testing for Superior Canal Dehiscence Syndrome

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Identifier SCDS_voice_over
Title Pressure Testing for Superior Canal Dehiscence Syndrome
Alternative Title Video 6.10 Evaluating for pressure-induced nystagmus from Neuro-Ophthalmology and Neuro-Otology Textbook
Creator Tony Brune, DO; Daniel R. Gold, DO
Affiliation (TB) Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, Maryland; (DRG) Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine, Baltimore, Maryland
Subject Valsalva; Superior Canal Dehiscence Syndrome
Description 𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 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, https://collections.lib.utah.edu/details?id=1213443). Nystagmus and vertigo are also commonly triggered by loud environmental noises, or provoked by loud tones in the clinic. 𝗡𝗲𝘂𝗿𝗼-𝗼𝗽𝗵𝘁𝗵𝗮𝗹𝗺𝗼𝗹𝗼𝗴𝘆 𝗮𝗻𝗱 𝗡𝗲𝘂𝗿𝗼-𝗼𝘁𝗼𝗹𝗼𝗴𝘆 𝗧𝗲𝘅𝘁𝗯𝗼𝗼𝗸 𝗟𝗲𝗴𝗲𝗻𝗱: Superior 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 (toward right ear) nystagmus provoked by pinched nose Valsalva, which is an excitatory pattern of nystagmus. Nystagmus and vertigo are also commonly triggered by loud environmental noises, or provoked by loud tones in the clinic https://collections.lib.utah.edu/details?id=1307322. (Video and legend created with the assistance of Dr. Tony Brune and Justin Bosley)
Date 2018-01
Language eng
Format video/mp4
Type Image/MovingImage
Collection Neuro-Ophthalmology Virtual Education Library: Dan Gold Neuro-Ophthalmology Collection: https://novel.utah.edu/Gold/
Publisher North American Neuro-Ophthalmology Society
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah, 10 N 1900 E SLC, UT 84112-5890
Rights Management Copyright 2016. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
ARK ark:/87278/s69p71c6
Setname ehsl_novel_gold
ID 1307322
Reference URL https://collections.lib.utah.edu/ark:/87278/s69p71c6
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