Cardiovascular System Review

Question 1

What is the MDx for Erysipelothrix rhusiopathiae damage in the pig?

Answer 1

(Verrucous/vegetative if wart-like) Valvular Endocarditis

Question 2

Dirofilaria immitus are usually found in the _________ and _________, and in heavy infestations also the ______ and ______. How does this manifest as a MDx? What may it lead to?

Answer 2

Pulmonary arteries and right ventricle;
Right atrium and venae cavae.

MDx: endocarditis, endarteritis, and pulmonary thrombosis.
May lead to CHF.

Question 3

What are the four poster abnormalities associated with Tetralogy of Fallot that result in insufficient oy oxygenated blood pumped to the body?

Answer 3

1. Narrowing of the pulmonary valve (pulmonic stenosis)
2. Thickening of the right ventricular wall (RV hypertrophy)
3. Displacement of aorta over ventricular septal defect
4. Ventricular septal defect - an opening between the L and R ventricles

Question 4

How is aortic stenosis different from pulmonic stenosis?

Answer 4

Aortic stenosis is among the most frequently encountered anomalies in dogs!
The difference is AS results in compensatory concentric LV hypertrophy and post-stenosis dilation of the aorta.

Question 5

What species is tricuspid dysplasia most common?

Answer 5

Cats

Question 6

What breed(s) of dogs are predisposed to PRAA?

Answer 6

German Shepherds,
Irish Setters,
Great Danes

Question 7

In an older dog, what might we expect with the rupture of an atrial hemangiosarcoma? How does this cause death?

Answer 7

Hemopericardium!
“Cardiac tapenade”
The fluid distends the pericardial sac which leads to the failure of the heart to expand properly; acute heart failure

Question 8

MDx and Etiology for “mulberry heart disease” in the pig…

Answer 8

Pericardial effusion/hydropericardium;

vit E/Selenium deficiency

Question 9

MDx and etiology for “black leg” …

Answer 9

Fibrinous pericarditis (and tissue emphysema);
Clostridium chauvoei

Question 10

Characterize valvular endocardiosis and the breed of dogs most susceptible.

Answer 10

Degeneration of valvular collagen (age-related);

Cavalier King Charles Spaniels

Question 11

What is the most common cause of CHF in old dogs?

Answer 11

Valvular endocardiosis