Week 1.2

Question 1

What are some advantages of digital hearing instruments?

Answer 1

• save and load settings from the computer
• increased control of hearing aid
• automatic and advanced features
• bluetooth connectivity

Question 2

What are the 5 types of hearing aids?

Answer 2

1. Behind the Ear
2. In-The-Ear
3. In the canal
4. Completely in the canal
5. Open fit

Question 3

What are the advantages and disadvantages of a BTE?

Answer 3

ADVANTAGE: big battery means long life, easiest to manipulate, fits biggest hearing range

DISADVANTAGE: cosmetics, tubing hard to change, insertion

Question 4

What are the advantages and disadvantages of a ITE?

Answer 4

ADVANTAGE: easiest to put in and remove, easy to manipulate, fit wide range of HL

DISADVANTAGE: cosmetics, changing wax guard is difficult, has to be sent in for repairs

Question 5

What are the advantages and disadvantages of a ITC?

Answer 5

ADVANTAGES: one piece, cosmetics, volume & program buttons accessible

DISADVANTAGE: has to be sent in for repairs, changing wax guard

Question 6

What are the advantages and disadvantages of a CIC?

Answer 6

ADVANTAGES: one piece, cosmetics

DISADVANTAGES: changing wax guard, small range of HL, discomfort

Question 7

What are the advantages and disadvantages of an open fit?

Answer 7

ADVANTAGES: cosmetics, reduces occlusion, repairs done in clinic

DISADVANTAGES: changing wax guard, inserting instrument, fall out easily

Question 8

What are the two types of open fit hearing aid? How are they different?

Answer 8

1. Open fit slim tube: receiver sits behind the ear, plastic tube delivers sound to EC. Never has wax guard.
2. Open fit RIC: microphone etc all sit behind the ear, receiver sits in the ear

Question 9

What are the different types of dome?

Answer 9

Open dome
Closed dome
Power dome
Custom mold

Question 10

What is the extended use hearing aid called? How long does it stay in?

Answer 10

The Lyric, made by Phonak, which stays in the ear for 3 months at a time.

Question 11

What are the three components of a hearing aid?

Answer 11

Microphone
Microchio (digital signal processor)
Receiver

Question 12

What are the depending factors for what type of ear mold someone gets?

Answer 12

1. Severity of HL
2. What can someone get in their ear
3. What can someone tolerate in their ear

Question 13

What are armload impressions made of?

Answer 13

1. silicone based material

2. accelerant

Question 14

Name three kinds of earmold

Answer 14

Skeleton
Semi-skeleton
Inverted semi-skeleton
Canal lock
Canal mold
Shell mold
Half-shell
Thick shell mold
Non-occluding

Question 15

What is the type of earmold material based on?

Answer 15

Age
Severity of HL
Allergies
Management
Ear sensitivity

Question 16

Which earmold materials are hypoallergenic

Answer 16

Heat cured lucite, polyethylene, silicone, new soil (selectively), flex-canal

Question 17

Which materials are used for paediatrics?

Answer 17

Formaseal

Question 18

What is flex-canal?

Answer 18

An earmold material which is a lucite/silicone combination. Lucite provides the tactile information while the silicone mold gives a better seal