Miscellaneous Respiratory Conditions

Question 1

What is the primary organ in ruminants for immediate hypersensitivity reactions?

Answer 1

• Lungs!

Question 2

Precipitating antigens for Systemic anaphylaxis

Answer 2

• Anything

- Vaccines, bug bites, etc.

Question 3

When do clinical signs occur with systemic anaphylaxis after exposure to the antigen?

Answer 3

• 2-20 minutes of the insult

Question 4

Clinical signs of systemic anaphylaxis

Answer 4

• Acute dyspnea, stertor, inspiratory dyspnea
• +/- urticaria
• Others too like pruritus, diarrhea, facial edema, collapse
• Recovery/death is rapid (15 min.)

Question 5

Necropsy findings o systemic anaphylaxis

Answer 5

• Pulmonary edema/congestion
• Laryngeal edema
• Emphysema

Question 6

Treatment for systemic anaphylaxis

Answer 6

• Epinephrine 1mL/100lb IM, SQ, IV!!
• Also steroids, NSAIDs, diuretics
• Support: fluids, O2, tracheostomy, etc.

Question 7

Milk allergy - what type of hypersensitivity?

Answer 7

• TYpe 1 hypersensitivity seen during dry off due to milk proteins entering circulation

Question 8

When does milk allergy occur?

Answer 8

• Dry off period

- Milk is being reabsorbed

Question 9

Signs of milk allergy

Answer 9

• Sudden onset urticaria, respiratory distress (uncommon)

- Edema, emphysema

Question 10

Treatment for milk allergy

Answer 10

• Corticosteroids, antihistamines, milk out

- CAREFUL with pregnant cows getting corticosteroids

Question 11

Prevention for milk allergy

Answer 11

• Avoid milk retention

- Avoid cow retention