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Flashcards in Hearing Loss Deck (30)
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1

What are the reasons for hearing loss?

Flying/traveling
Infection
Aging

2

3 Segments of the Ear

Outer
Middle
Inner

3

What parts are involved in sensorineural hearing loss?

Inner ear
Cochlea
Auditory nerve

4

What parts are involved in conductive hearing loss?

Any cause that limits external sound into the inner ear

5

What is mixed hearing loss?

Combination of sensorineural and conductive hearing loss

6

Outer Ear Causes of Hearing Loss

Congenital: microtia
Infection: otitis externa
Trauma: penetrating trauma to external auditory canal
Tumor: SCC
Benign tumor growths: exostosis and osteoma
Systemic disease: DM or immunocompromised
Cerumen

7

Define Exostosis

Multiple bony growths within the ear canal due to exposure to cold water

8

Define Osteoma

Bony growth along the typano-ossicle suture line

9

Middle Ear Causes of Hearing Loss

Congenital: malformation/fixation of oxxicles
ET dysfunction: viral infection, sinusitis, allergies
Infection: otitis media
Tumors: cholesteatoma
Otosclerosis
Tympanic membran perforation
Bartrauma

10

Define Otosclerosis

Bony overgrowth of the footplate of the stapes

11

Inner Ear Causes of Hearing Loss

Non-hereditary congenital: insult to cochlea, viral infections
Hereditary congenital: Mondini
Presbycusis: old age
Infection: viral
Miner disease
Trauma: skull culture
Tumors: acoustic neuroma
Ototoxic Drugs

12

Define Mondini

Cochlea only turns 1.5 times instead of the normal 2.5 times

13

Types of Ototoxic Drugs

Aminoglycosides
Erythromycin
Tetracycline
Cisplatin

14

Symptoms of Hearing Loss Include

Unilater/bilateral hearing deficit
Difficulty understanding speech, conversations, TV/radio
Social withdrawal

15

Weber test lateralized to the "good" ear

Sensorineural hearing loss

16

Weber test lateralized to the "bad" ear

Conduction hearing loss

17

BC > AC + Weber test lateralizes to that side

Conduction hearing loss

18

Weber lateralizes to ear which Rinne is normal but contralateral Rinne test is abnormal

Sensorineural hearing loss

19

Examination of the Ear

Pneumoscopy
Formal audiologic assessment

20

Non-mobile TM in Pneumoscopy

Fluid/mass in middle ear
Stiff or sclerotic TM

21

Hypermobile TM in Pneumoscopy

Ossicular chain disruption

22

Treatment of Congenital in Conductive Hearing Loss

Surgery if possible
Bone conduction hearing aide

23

Treatment of Infections in Conductive Hearing Loss

Antibiotics

24

Treatment of Trauma in Conductive Hearing Loss

Surgery if possible

25

Treatment of Otosclerosis in Conductive Hearing Loss

Surgery to replace immobile stapes
Hearing aide

26

Treatment of Trauma in Conductive Hearing Loss

Corticosteroids

27

Treatment of Trauma in Sensorineural Hearing Loss

Corticosteroids

28

Treatment of Menieres Disease in Sensorineural Hearing Loss

Low-sodium diet
Diuretics
Corticosteroids

29

Treatment of Tumors in Sensorineural Hearing Loss

Surgery
Radiation

30

Treatment of Irreversible Sensorineural Hearing Loss

Hearing aides
Cochlear implant