Hearing Loss

Question 1

What is otosclerosis?

Answer 1

Autosomal dominant condition, leading to replacement of normal bone with vascular spongy bone - causes conductive deafness.
Features: Tinnitus, family hx, conductive deafness

Question 2

What is presbycusis?

Answer 2

Age-related sensorineural hearing loss
Difficulty following conversations

Question 3

What is glue ear and its main features?

Answer 3

Otitis media with effusion - mainly seen in young infants
Conductive hearing loss in children
Speech and language delay, behavioural and balance problems

Question 4

What are the main features of Meniere’s disease?

Answer 4

• Recurrent episodes of vertigo, tinnitus, hearing loss
• Sensation of aural fullness
• Other features include nystagmus
• Episodes last minutes to hours

Question 5

Common drugs that cause ototoxicity…

Answer 5

Aminoglyclosides - gentamicin
Furosemide
Aspirin

Question 6

Features of acoustic neuroma

Answer 6

CN VIII = tinnitus, vertigo, hearing loss
CN V = absent corneal reflex
CN VII = facial nerve palsy

Question 7

What are the Rinnes and Weber’s findings seen in conductive hearing loss?

Answer 7

Rinnes:
Bone > Air in affected ear
Air> Bone in unaffected ear

Webers:
Lateralises to affected ear

Question 8

What are the Rinnes and Weber’s findings seen in sensorineural hearing loss?

Answer 8

Rinnes:
Air> Bone bilaterally

Webers:
Lateralises to unaffected side

Question 9

What are the Rinnes and Weber’s findings seen in normal hearing?

Answer 9

Rinnes:
Air> Bone bilaterally

Webers:
Midline