Practice Questions

Question 1

What is the best treatment for S. Western?

Answer 1

Ivermectin

Question 2

For ringbone:

1. Define
2. State three potential causes
3. State how you would diagnose it
4. State how it is typically treated

Answer 2

1. OA of phalanges
2. palpation of the soft tissue structures, radiographs, reduced ROM, regional nerve block
3. Complete rest, cold packing, radiation therapy, AI’s, surgical arthrodesis

Question 3

Based on the presentation of a 3 month old foal with muzzle deviation to the right and a head tilt give the most likely diagnosis”

Answer 3

• Damage to the Facial nerve (VII) → muzzle deviation + ptosis of the left eye + drooping of the left ear (opposite side of the injury)
• Damage to vestibular nerve (VIII) → head tilt

Question 4

For Ileocolonic agangliosis in foals (lethal white foal syndrome):

1. State the cause
2. How do foals appear?
3. How is it diagnosed?
4. What is the prognosis?

Answer 4

1. Autosomal recessive trait seen in Overo horses
2. Foal is born white w/blue irisis
3. Based on history w/ a lack of ganglia in the colon
4. Most develop colic and die by 2d of age

Question 5

Describe how strongyles vulgaris causes colic:

Answer 5

• Migration → thrombosis of cranial/anterior mesenteric arteries → colic/infarction of the bowel
• Causes colic by intestinal impaction
  *

Question 6

How does Parascaris equorum cause colic:

Answer 6

• Causes intestinal impaction

Question 7

Name two parasites that cause damage to the lungs:

Answer 7

Strongyloides westeri + Draschia megastoma

Question 8

What two antigens are most commonly associated with neonatal isoerthrolysis?

Answer 8

Aa and Qa antigens

Question 9

What are the future breeding prospects for a mare than has aborted due to equine herpes virus type 1?

Answer 9

• Good - vaccinate mare against for next pregnancy - 5, 7 and 9 month periods

Question 10

What is meant by the condition scratches?

Answer 10

Chronic seborrheic dermatitis of the plantar/palmar aspect of the pastern

Question 11

What is the cause of summer sores?

Answer 11

Habronema/Draschia

Question 12

What is the cause of “Sweet itch”?

Answer 12

Hypersensitivity caused by Culicoides

Question 13

What is the cause of ringbone?

Answer 13

• Osteoarthritis in the pastern - can be separated into high ringbone (the pastern) and low ringbone (the coffin joint)

Question 14

For yellow star thistle:

1. State where in the USA it mainly grows
2. What are the main clinical signs seen with it?

Answer 14

1. Dry fields in Cali
2. Upper motor neuron signs → hard for the animal to eat and neurological signs

Question 15

In cases of Myoglobinuria how does:

1. The urine appear
2. The plasma appear

Answer 15

1. Dark brown
2. Clear