Hearing loss

Question 1

Name 4 drugs which cause hearing loss

Answer 1

Aminoglycosides: gentamicin
Loop diuretics: furosemide
Chemotherapy: cisplatin, carboplastin, vincristine
Others: quinine, mercury, aspirin

Question 2

How would you classify hearing loss?

Answer 2

Sensorineural
Conductive
Mixed

Question 3

Give 3 examples of sensorineural hearing loss

Answer 3

Idiopathic (most of the time)
Noise-induced hearing loss
Drug induced i.e gentamicin, furosemide
Congenital infections i.e rubella, CMV
Neonatal complications i.e kerniceterus, meningitis
Acoustic neuroma
Presbyacusis
Meniere's Disease
Vascular pathology. i.e TIA/stroke

Question 4

Give 3 examples of conductive hearing loss

Answer 4

Earwax
Chronic suppurative otitis media
Otitis media with effusion
Eustachian tube dysfunction
Tympanic membrane perforation

Question 5

Bedside test to determine type of hearing loss?

Answer 5

Weber and Rinne tests

Question 6

Special investigations to investigate type of deafness?

Answer 6

Tone audiometry