Audiometry

Question 1

What is the range of normal hearing?

Answer 1

-10dB -> 20 dB

Question 2

What is bone conduction?

Answer 2

bypasses the inner ear and goes straight to the cornea

Question 3

How does sensorineural hearing loss appear on audiometry?

Answer 3

NO GAP between air and bone conduction

Question 4

What can SNHL be due to?

Answer 4

rubella
otoxic drugs
tumours of nerves
complications at birth
prolonged loud noise exposure

Question 5

What is SNHL?

Answer 5

damage of the hair cells or auditory nerve or both

Question 6

How does conductive hearing loss appear on audiometry?

Answer 6

GAP between bone and air conduction

Question 7

How can CHL be corrected?

Answer 7

surgery

Question 8

What can CHL be due to?

Answer 8

glue ear
effusions
perforated ear drums

Question 9

What is the role of tympanometry?

Answer 9

tests the condition of the middle ear - creates variations of pressure in the canal

Question 10

What can tympanometry diagnosed?

Answer 10

Otitis medial

perforated tempanic membrane