Gutteral Pouch Tympany Flashcards

1
Q

T/F

Most guttural pouch tympanies are bilateral.

A

False
Most are unilateral

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2
Q

T/F

There is no such things s premature closure, only excessive drainage in terms of castration.

A

True

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3
Q

T/F

Monorchid horses are fairly common.

A

False
Very very very rare!

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4
Q

T/F

Up to 5% of horses will exhibit unwanted behavior after a proper castration.

A

False
Up to 25%

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5
Q

T/F

A rectovaginal fistula is similar to a 3rd degree perineal laceration.

A

False

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6
Q

T/F

Pelvic flexure impactions are seldom a location for surgical colic.

A

True
Pelvic flexure impactions are mostly medical colics

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7
Q

T/F

> 90% of horses are affected by laryngeal hemiplegia on the right side.

A

False
Left side

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8
Q

What is the guttural pouch?

A

Dilated eustachian tube

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9
Q

What is the etiology of guttural pouch tympany?

A

Unknown
Increased pressure in nasopharyngeal from coughing or infection
Possibly genetic

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10
Q

What is the volume of the guttural pouches in an adult horse?

A

300-500mL

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11
Q

How does pressure build in the guttural pouch?

A

Forced by coughing or neighing

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12
Q

What are the clinical signs of GP tympany?

A

Swelling of parotid region - unilateral
Respiratory noise
Nasal discharge
Dyspnea, pneumonia dysphagia

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13
Q

Are colts or fillies more likely to get GP tympany?

A

Fillies

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14
Q

How do you diagnose GP tympany?

A

Clinical signs
Endoscopy
Radiographs (air-filled GP)
Needle decompression

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15
Q

What are the borders of Viborg’s triangle?

A
  1. Angle of mandible
  2. Linguofacial vein
  3. Tendon of sternocephalicus
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16
Q

What is the goal of treatment for GP tympany?

A

Make the one-way valve incompetent

17
Q

What are the surgical treatments for GP tympany?

A
  1. Septum fenustration
  2. Resection of inner mucosal flap of GP opening
  3. Modified Whitehouse (below linguofacial vein)
  4. Transendoscopic laser
18
Q

What does LASER stand for?

A

Light amplification by stimulated emission of radiation

19
Q

What are the two sides/lips of the inner valve of the GP opening?

A

Axial/medial - thick, cord-like pelican salpingopharyngeus

Abaxial/lateral - tensor lavator palatini muscle

20
Q

What is the prognosis for GP tympany?

A

30% recurrence rate after first operation
Guarded prognosis if dysphagia and aspiration pneumonia present