Audiology & Vestibular MCQs

ENT · 6 free questions with answers & explanations.

1. On pure tone audiometry, a patient shows an air-bone gap of 40 dB at all frequencies tested. Tympanometry shows a Type B flat curve with a low compliance peak. Stapedial reflexes are absent. What is the most likely finding on otoscopy?
2. A 50-year-old woman has episodic attacks of true rotatory vertigo lasting 20-30 minutes, fluctuating low-frequency sensorineural hearing loss, tinnitus, and aural fullness in the left ear. Glycerol dehydration test improves her hearing thresholds by 15 dB. Electrocochleography shows an elevated summating potential to action potential (SP/AP) ratio. What is the diagnosis?
3. A 65-year-old man presents with sudden onset severe vertigo when he rolls over to his right side in bed. The vertigo lasts about 15 seconds and then resolves. Dix-Hallpike testing with the right ear down produces characteristic upbeat-torsional nystagmus with the top pole of the eye beating toward the affected (right) ear. What is the most effective treatment manoeuvre?
4. A 4-month-old infant fails newborn hearing screening. Automated ABR shows no response at 40 dB nHL bilaterally. Genetic testing reveals mutations in the GJB2 gene encoding connexin 26. What is the most appropriate next step in management?
5. A 38-year-old woman undergoes caloric testing. Cold water irrigation of the right ear produces nystagmus beating to the LEFT. Hot water irrigation of the right ear produces nystagmus beating to the RIGHT. The responses are symmetrical with the left ear. How is this interpreted?
6. A 70-year-old man has bilateral symmetric sloping high-frequency sensorineural hearing loss on audiometry, worse at 4000-8000 Hz, with normal low frequencies. He reports difficulty understanding speech in noise. There is no history of noise exposure or ototoxic drug use. What type of hearing loss does this pattern represent?