Superior Semicircular Canal Dehiscence - Stanford Hospital & Clinics

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Signs in 53 patients with SSCD • Sound-induced eye movements 38 (72%) • Valsalva-induced eye movements 37 (70%) • EAC pressure-induced eye movements 23 (43%) • Sound-induced head tilt 8 (15%) Minor et al, Otol Neurotol 2003
Overview • Eye movements • Mechanism • Audiometric Diagnosis • Etiology • CT imaging • Surgical correction • Apparent conductive hearing loss
Page 1 and 2: UC SF Superior Semicircular Canal D
Page 3 and 4: 54 year old with sound-induced vert
Page 5 and 6: Overview • Eye movements • Mech
Page 7 and 8: Eye movements evoked by stimulation
Page 11: Third mobile window
Page 14: Overview • Eye movements • Mech
Page 17 and 18: Lowered cVEMP Threshold in SCD 41-y
Page 19 and 20: ECoG = Alternate Diagnostic Modalit
Page 21: Additional auditory Sx: • autopho
Page 25 and 26: Range of bone over SC
Page 27 and 28: Bilateral SC dehiscences
Page 29 and 30: • Unknown Genetics • 1 patient
Page 31 and 32: Superior Canal Dehiscence by CT 1.0
Page 33 and 34: 3D CT of SSCD, Crane et al, O & N,
Page 35: Middle Fossa Approach
Page 40 and 41: Surgical Correction 18 patients (9
Page 42 and 43: Meta-analysis of Surgical results V
Page 46 and 47: 48 y.o. man with pulsatile oscillop
Page 48 and 49: CT Scan showing dehiscence
Page 50 and 51: Inner Ear Conductive Hearing Loss
Page 52: Summary • VEMPs: lowered threshol

Superior Semicircular Canal Dehiscence - Stanford Hospital & Clinics

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