amplification styles

Question 1

behind the ear (BTE)

Answer 1

-all degrees of HL
-no pinna effect
-wind noise present
-easy to manage for feedback and occlusion
-insertion ease depends on the patient

Question 2

slim tube BTE (RITA)

Answer 2

-up to around 50 dB loss
-no pinna effect
-wind noise present
-potential for feedback
-no potential for occlusion
-insertion ease depends on patient

Question 3

receiver in the canal (RIC)

Answer 3

-up to around 85 dB loss
-no pinna effect
-wind noise present
-feedback occurs with open domes
-OE can occur, can be solved with customs
-HIGH repair rates (due to whats in the canal)

Question 4

in the ear (ITE)

Answer 4

-up to around 70dB (possible 80 dB)
-no pinna effect
-wind noise present from the front, back or straight on
-high chance for OE, low risk for feedback
-easy insertion

Question 5

in the canal (ITC)

Answer 5

-up to around 70 dB
-some pinna effect
-wind noise present from the front and the side of the HA
-chance for OE
-if able to pick it up, easy insertion
-bad option for small ear canals

Question 6

completely in the canal (CIC)

Answer 6

-up to around 80 dB
-pinna effect will occur (around 7 dB)
-high chance of OE
-wind noise present from the side of the HA
-can be uncomfortable for some patients
-can be difficult to insert

Question 7

invisible in the canal (IIC)

Answer 7

-up to around 70 dB, best for low frequency HL
-pinna effect will occur if mic depth allows
-no wind noise
-canal may reject wearing it
-good for cosmetics

Question 8

what are the custom ones

Answer 8

ITE, ITC, CIC and IIC

Question 9

what are the uses for non-surgical bone conduction HA’s

Answer 9

-single sided deafness
-atresia
-microtia
-chronic external otitis

Question 10

earlens induction driven HA

Answer 10

similar to a RIC however there is a lens on the ear drum that receives information and the TM then moves
-there is a broader based wide frequency sound