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TitleDescriptionSubject
1 Pressure Testing for Superior Canal Dehiscence SyndromeSuperior 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 t...Valsalva; Superior Canal Dehiscence Syndrome
2 Superior Canal DehiscenceThis is a 60-yo-man who complained of autophony (eg, hearing his own heartbeat, noting that his own voice sounded too loud) and dizziness triggered with loud noises and straining at times. With pinched-nose Valsalva maneuver, there was downbeat-torsional (towards the right ear) nystagmus, suggestive...Nystagmus; Superior canal dehiscence; Valsalva
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