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SAMS 2 exam 3 wound and skin stuff > Aural Surgery > Flashcards

Aural Surgery Flashcards

1
Q

know anatomy of the ear

A

//

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2
Q

What is a part of the ear that is impt with vestibular dz?

A

Promontory in the cochlear (round) window

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3
Q

What forms the shape of the pinnae? What is it comprised of?

A

Auricular cartilage; numerous holes which are transversed by the branches of the caudal auricular artery

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4
Q

What canal(s) makes a 70 degree angle

A

Vertical and horizontal canals

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5
Q

What is in the middle ear?

A

Tympanic membrane, tympanic cavity, tympanic bulla, auditory vesicles, & auditory tube

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6
Q

What two nerves course the inner ear?

A

Facial and vagus nerve

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7
Q

What are in the inner ear?

A

Cochlea, vesticuble (saccule), and semi-circular canals functioned for balance and hearing

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8
Q

Pars tensa

A

semi-transparent + glistening

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9
Q

Pars flaccida

A

opaque, pinkish to white color with superficial vessels; dorsal portion of the tympanic membrane

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10
Q

Signalment of otitis patients-

A

most common in middle aged dogs, kittens and young adults but more common in dogs

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11
Q

Where are the auditory ossicles?

A

Transverse middle ear

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12
Q

What is the preferred technique for severe otitis externa?

A

TECA-BO

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13
Q

What sx if best for palliative in some cases of ear canal dz?

A

LECR/VECR

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14
Q

What is the def. tx for otitis or ear canal neoplasia?

A

TECA-BO

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15
Q

What is the def. sx tx for inflamm. polyps in cats??

A

VBO/Traction-Avulsion

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16
Q

How is the anatomy of the feline ear different?

A

Nasopharyngeal polyps are between the septum bullae and the promontory and so we need to break down that cartilage septum

17
Q

What do we do for cats that have chronic polyps in their ear?

A

Ventral bulla osteotomy

18
Q

End stage ear disease involves mineralization and/or ____ ____

A

canal stenosis

19
Q

What is the preferred modality for evaluating chronic otitis externa?

A

CT

20
Q

Is vertical ear canal resection indicated for tx of chronic otitis externa?

A

no

21
Q

What are some complications of TECA-BO?

A

Infection, hearing loss, sympath. n injury, inner ear trauma, chronic fistulas

22
Q

Ear canal neoplasia is usually which type?

A

Carcinoma (Ceruminous gland or SCC)

23
Q

Which nerve should you be aware of during aural surgery as it exits caudal to the tympanic bulla and runs ventral to the horizontal ear canal?

A

Facial nerve

24
Q

What vessels are ventral to the tympanic bulla that you should be aware of during aural surgery?

A

External carotid a and maxillary v

25
Q

What vessels are cranial to the tympanic bulla that you should be aware of during aural surgery?

A

retroarticular vein - can cause major hemorrhage

26
Q

What are the surgical options for ear disease?

A
  • lateral ear canal resection (LECR)
  • vertical ear canal resection (VECR)
  • total ear canal ablation and lateral bulla osteotomy (TECA-BO)
27
Q

T/F: A lateral ear canal resection is appropriate for most cases of otitis externa.

A

F

28
Q

What are the indications for performing a vertical ear canal resection?

A
  • remove tumors
  • traumatic ear injuries
  • drain horizontal canal
29
Q

What is the preferred surgical technique for severe otitis externa?

A

TECA-BO

30
Q

What nerve should you make sure to avoid when performing a ventral bulla osteotomy? VBO

A

hypoglossal n

31
Q

Where do feline inflammatory polyps originate from?

A

Middle ear

32
Q

What type of neoplasia occurs in the ear canal most commonly?

A

SCC or the ceruminous gland usually

33
Q

Inner ear components (3)

A
  • cochlea
  • vestibule
  • semicircular canal
34
Q

Is the ear mite burrowing or not?

A

Not

SAMS 2 exam 3 wound and skin stuff (12 decks)

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