Equine Respiratory

Question 1

Define Grade I Idiopathic Laryngeal Hemiplegia

Answer 1

Grade I is normal
full abduction of left + right arytenoid cartilages

Question 2

Define Grade II Idiopathic Laryngeal Hemiplegia…

Answer 2

asynchronous abduction,
but full abduction could be achieved

Question 3

Define Grade III Idiopathic Laryngeal Hemiplegia…

Answer 3

asymmetry at rest,
some movemement,
but full abduction cannot be achieved

Question 4

Define Grade IV Idiopathic Laryngeal Hemiplegia…

Answer 4

asymmetry at rest
& no movement

Question 5

What are complications of tieback?

Answer 5

• Prosthesis failure
• seroma
• cough {remove suture}
• dysphagia
• loss of abduction

Question 6

What is this procedure called & what is the objective?

Answer 6

Neuromuscular pedicle graft

reinnervation of the cricoarytenoid muscle

Question 7

What’s the preferred surgical treatment for arytenoid chondritis?

Answer 7

Partial arytenoidectomy

• 50% of racehorses return to racing
  w. significantly improved upper airway flow dynamics*

Question 8

What are some options for non-surgical treatment for DDSP?

Answer 8

• NSAIDs
• tongue-tie
  {shoe-lace around tongue just before starting gate;
  prevents larynx from moving caudally}
• laryngohyoid support device

Question 9

Which surgical treatment for DDSP is depicted?

Answer 9

Staphylectomy

Question 10

What is the preferred treatment for DDSP & what is the goal?

Answer 10

Laryngeal tie-forward
goal is to pull larynx cranially

Question 11

What structures make up Viborg’s Triangle?

Answer 11

1. sternomandibular muscle
2. lingofacial vein
3. caudal border of vertical ramus of mandible

Question 12

What are the main 3 causes for guttural pouch empyema?

Answer 12

1. URT infection
2. abscessation of retropharyngeal lnn.
3. fracture of stylohyoid bone