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Superior Semicircular Canal Dehiscence

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1.  Each of the following is true regarding superior semicircular canal dehiscence (SSCD), EXCEPT: SSCD is a rare condition SSCD never causes hearing loss Symptoms of SSCD are due to a thinning or lack of bone over the superior semicircular canal People with SSCD may experience the Tullio phenomenon

2.  The following are symptoms of SSCD, EXCEPT: Chronic dysequilibrium Ear fullness Autophony Ear pain

3.  Which of the following is not a typical symptom of SSCD? Headache Sound-induced dizziness Pulsatile tinnitus Hearing eyes move

4.  Which of the following is the cause of symptoms from SSCD? Third-window effect Blockage of round window Blockage of oval window Fixation of stapes

5.  All of the following are possible audiometric findings with SSCD, EXCEPT: Supranormal bone conduction thresholds Air-bone gap Absent acoustic reflexes Sensorineural hearing loss

6.  All of the following are possible audiological findings with SSCD, EXCEPT: Elevated SP/AP Absent cVEMP results Downbeating nystagmus on VNG positional testing Positive Tullio's test

7.  All of the following are treatment options for SSCD, EXCEPT: Tympanostomy tube insertion Round window plugging Middle fossa plugging Intratympanic steroids

8.  A condition that may mimic the symptoms of SSCD is: Meniere's disease Perilymphatic fistula Eustachian tube dysfunction All of the above

9.  Which of the following is the "gold standard" for diagnosing SSCD? Pure-tone audiogram CT temporal bones Type C tympanogram VEMP testing

10.  Which of the following symptoms are often improved with surgery? Dizziness Hearing loss Both A and B None of the above