Exercise Induced Pulmonary Hemorrhage

Question 1

What type of horses does it affect?

Answer 1

Racehorses - thoroughbreds, Standardbreds, quarter horse

Can affect any horse with strenuous exercise

Question 2

What type of exercise causes this

Answer 2

Strenuous exercise (like a sprint)

Question 3

Pathogenesis?

Answer 3

Unknown - there are many theories - ruptured capillaries, upper airway obstruction, coagulopathies, etc etc

Question 4

Most obvious clinical sign? Other CS?

Answer 4

Epistaxis, but you do not see it in all horses

Other - labored breathing, decreased performance, loss of speed, coughing

Question 5

Treatment? When is it given?

Answer 5

Furosemide, 4 hours PRIOR to exercise

Question 6

Is prevalence related to intensity or duration?

Answer 6

Intensity

Question 7

Which part of the lungs are most commonly involved

Answer 7

Caudodorsal lung fields (think of a dog in CHF - you treat with furosemide b/c fluid in caudodorsal lung field. You treat this with furosemide too)

Question 8

Besides epistaxis, how else can you try to diagnose the disease?

Answer 8

Endoscopy and cytology (BAL)