Structures of the Ear (Sos)

Question 1

What is Otalgia? What nerves can contribute to this?

Answer 1

pain located in or around the ear

• CN V (includes tiny piece of anterior ear)
• Cervical Nerves (occipital)
• Superficial Cervical Plexus (most of ear)

Question 2

What’s the most common pathogen causing Acute Otitis Externa? What activities can cause this?

Answer 2

Pseudomonas Aeruginosa
Swimming –> swimmer’s ear. It is an infection of the outer ear –> if the eardrum ruptures –> it can be A/W otitis media

Question 3

Osteoma of the external ear

Answer 3

benign

can freeze ossicles from moving the tympanic membrane

Question 4

Otosclerosis

Answer 4

Autosomal Dominant 
possibly viral
ages= 10-30
tx = hearing aids + surgery 
find additional bony structures in the ear

Question 5

Otitis Media

Answer 5

• one of the most common infectious diseases of kids

- most common in WINTER months which coincides w/ peak Respiratory Viral Infections

Question 6

Otitis Media risk factors

Answer 6

smoke
FH 
boys> girls
bottle feeding 
day care attendance

Question 7

Otitis Media clinical manifestations

Answer 7

Upper Respiratory Infections
fever
otalgia
hearing loss 
Dx = pus behind tympanic membrane

Question 8

Most common BACTERIAL pathogens in Otitis Media

Answer 8

Streptococcal Pneumoniae
Nontypeable Haemophilus Influenzae
Moraxella Catarrahalis

MUST KNOW!!!!!!!!