06 - dog acquired

Question 1

most common acquired in dogs?

Answer 1

DCM, arrythmogenic right ventricular cardiomyopathy, HCM

Question 2

DCM

heritable in boxer, doberman, great dane, newfie

Question 3

DCM

more common in male or female?

Answer 3

male

Question 4

DCM

dilation of what compartment?

Answer 4

LV (with systolic dysfx)

Question 5

can tachycardia induce DCM?

Answer 5

yes (leads to enlargement of all four heart chambers)

Question 6

what does doxorubicin (adriamycin) cause?

reversible?

Answer 6

DCM

yes

Question 7

what does toxoplasma gondii cause?

Answer 7

DCM

Question 8

what does trypanosoma cruzi cause?

Answer 8

DCM

Question 9

DCM

what two viruses can cause?

Answer 9

parvo and distemper

Question 10

DCM

what endocrine dz can contribute?

Answer 10

hypothyroidism

Question 11

DCM

what nutritional disorders can contribute?

Answer 11

taurine, carnitine

Question 12

DCM

causes left or right sided heart failure?

Answer 12

both

Question 13

DCM

murmur?

Answer 13

systolic left or right heart murmur (associated with atrioventricular valvular regurgitation)

Question 14

DCM

can see enlargement of what on radiographs?

Answer 14

all four

Question 15

DCM

best way to treat?

Answer 15

medical

ACE inhibitors, CHF management, antiarrhythmic therapy

Question 16

DCM

which of these carry a poor prognosis

tachycardia, toxic, infectious myocarditis, endocrine, nutritional, idiopathic

Answer 16

infectious and idiopathic

Question 17

Arrhythmogenic right ventricular cardiomyopathy

1. what happens?
2. familial in what breed?
3. inherited how?

Answer 17

1. fatty or fibrofatty infiltration of the right ventricle
2. boxers
3. autosomal dominant

Question 18

Arrhythmogenic right ventricular cardiomyopathy

1. characterized by syncope, ventricular arrhythmias with a right ventricular origin, and occasioanlly systolic dysfunction
2. tx = antiarryhtmic meds such as solatol or mexilitine combined with atenolol
3. high risk of sudden death

Question 19

HCM

1. characterized by what?
2. how often in dogs?

Answer 19

1. idiopathic concentric hypertrophy of the ventricle
2. rare

(rule out secondary causes of ventricular hypertrophy - aortic stenosis, systemic hypertension, neoplasia)