The ear and hearing

Question 1

what can cause conductive deafness

Answer 1

1) auditory canal = wax

2) Middle ear = ruptured tympanic membrane , Otitis media , Otosclerosis

Question 2

what can cause sensineural deafness ?

Answer 2

1) natural process of aging
- cochlea = presbycusis
- acoustic trauma = sound pollution , music too high ( high notes lost )
- Menieres disease

2) Cochlear nerve acoustic neuroma
3) Central auditory pathway which is rare

Question 3

What does the rhinne’s test do and show ?

Answer 3

Compares air and bone conduction:
- 512 hertz tuning fork 
- Positive ( air >bone )
- Negative (bone>air )
normal hearing has air > bone = +

• test => conductive deafness

Question 4

what does the Webbers test do ?

Answer 4

midline source of bone conducted sound ( tuning fork in middle of forehead )

• normally you should be able to hear it in both
• heard bettering the ear with conductive deafness ( masking )

Question 5

what’s audiometry

Answer 5

Sensioneural deafness is characterised
- Tones at different frequencies

ie : Menieres disease = low frequency damage