Cardiology.

Question 1

what is the most common heart disease of dogs?

Answer 1

myxomatous degenerative valve disease

Question 2

what causes myxomatous degenerative valve disease?

Answer 2

idiopathic (degenerate)

Question 3

what size dogs is myxomatous degenerative valve disease usually seen in?

Answer 3

small breeds

Question 4

what size dogs is mutual valve dysplasia seen in?

Answer 4

large breed

Question 5

what is the pathophysiology associated with myxomatous degenerative valve disease?

Answer 5

nodular thickening of the valve leaflets due to collagen deposition causing them to leak
the chordae become stretched and can rupture worsening the leakage

Question 6

what breed is predisposed to myxomatous degenerative valve disease?

Answer 6

caviller King Charles spaniel

Question 7

what are the gross pathological changes seen with myxomatous degenerative valve disease?

Answer 7

LA/LV dilation
elongated chordae teninae
thickened leaflets
jet lesions

Question 8

what is the stroke volume?

Answer 8

amount of blood exiting the heart each cycle

Question 9

what does volume overload of a heart chamber cause?

Answer 9

eccentric hypertrophy

Question 10

what does pressure overload of a heart chamber cause?

Answer 10

concentric hypertrophy (pushing harder to the muscle hypertrophies)