Canine Flashcards
What drug shouldn’t you use to tx aggression and why?
Benzodiazepines disinhibit fear-motivated aggression.
Breeds predisposed to compulsive disorders (4).
Doberman
Bull terrier
GSD
Mini schnauzer
When tx compulsive disorders, how long to see response to SSRI’s?
8 weeks
Which signalment will most likely show submissive inappropriate urination?
yougn female dogs
Boxer with syncope and sudden death
Arrhythmogenic RV cardiomyopathy
How do you diagnose ARVC (arrythmogenic RV cardiomyopathy)?
What is considered disease?
When should you treat?
What do you tx with?
24-Holter monitor
Disease = >100 VPCs/day OR runs of 2-3 VPCs OR ventricular tachy
Tx >1000 VPCs/day OR runs of v-tachy OR evidence of R on T
Sotalol or Mexiletine + Atenolol
What is pulsus alternans?
What arrythmia is it assc with?
Two quick normal pulses in a row followed by a pulse deficit
Assc w/ atrial fibrillation
Irregularly irregular rhythm with no p-waves
atrial fibrilation
When should you tx VPCs (4)?
HR >180
Pulse deficits
clinical signs
VPC runs >20s
Sequela to VPCs (3)?
Hypotension
Myocardial ischemia
CHF
Wide and bizarre QRS on ECG is assc with
VPC
How do you tx VPCs in dogs and cats?
Dogs - Lidocaine; once controlled procainamide, quinidine, propanolol
Cats - propanolol only
How do you tx ventricular tachycardia?
Lidocaine.
If no response, then Procainamide or Quinidine
Is ventricular tachycardia a shockable rhythm?
Yes
Absent P-waves, oscillation of baseline, lack of QRS
Ventricular fibrillation
What does the ECG of v-fib look like?
Absent P-waves
Oscillation of baseline
Lack of QRS
Is ventricular fibrillation a shockable rhythm?
Yes
Is ventricular asystole a shockable rhythm?
No
What must you do before shocking a patient you believe is in v-fib?
Check on ECG that it’s NOT VENTRICULAR ASYSTOLE.
What is the MST of a Doberman with DCM?
2 mos after diagnosis
What are 2 breeds assc w/ DCM?
Doberman
Cocker Spaniel
What causes DCM in cocker spaniels?
Taurine deficiency
A big round heart on CXR suggests what?
DCM
How do you tx DCM (3)?
Taurine supplementation
L-carnitine
Omega 3 FAs
How do you tx ventricular asystole?
Low does Epi and/or Vasopressin
Cardiopulmonary arrest is also known as
ventricular asystole
1 congenital heart abn?
PDA
Puppy at first vaccine visit with continuous murmur
PDA
Murmur heard in PDA
“washing machine” murmur
“Washing machine” murmur
“Water hammer” arterial pulse
PDA
CXR - over-vascularization of lungs, ductus bump
PDA
PDA CXR
over-vascularization of lungs
ductus bump
Tx for PDA
ductus ligation IF <2 yo
2 congenital heart abn in dogs?
pulmonic stenosis
Sudden death of a beagle with RV hypertrophy
Pulmonic stenosis
Primary strutural change seen with pulmonic stenosis?
RV concentric hypertrophy
L basilar systolic murmur between 2-4 ICS
pulmonic stenosis
CXR - reverse “D”
pulmonic stenosis
pulmonic stenosis murmur
L basilar systolic murmur between 2-4 ICS
Pulmonic stenosis CXR
reverse “D”
When should you tx pulmonic stenosis?
Only if resulting cardiac changes or blood pressure
Tx for pulmonic stenosis
Diuresis
Salt restriction
Exercise restriction
What condition is a “patch graft” surgery for?
pulmmonic stenosis
Which breeds typically develop mitral valve dysplasia?
GSD, Great Danes
Newfoundland with ascites, syncope, and ejection-type systolic murmur (crescendo-decrescendo).
subaortic stenosis
What is a risk of subaortic stenosis?
infective endocarditis
Murmur for subaortic stenosis?
ejection-type systolic murmur
crescendo-decrescendo
L 2-5 ICS or at thoracic inlet
Tetralogy of Fallot
RV hypetrophy
VSD
overriding aorta
pulmonic stenosis