Lecture 6: Congenital Heart Disease Flashcards
In fetal circulation- is pressure higher on the right or left side of heart
right
what is the most common congenital heart disease of dogs
pulmonic stenosis
what is the most common cause of congenital heart disease in cats
ventricular septal defects
what are some causes of congenital heart disease in small breed dogs
PDA, VSD, AS, PS
what are some causes of congenital heart disease in large breed dogs
PS, AS, SAS, VSD, TVD
in utero what maintains latency of PDA
PGE2
what happens after birth to close PDA
- Lungs inflate (PA pressure drops)
- PGE2 lowers
- Smooth muscle constricts
- Ductus closes
in patent PDA there is __ of the ductus
aortification
what type of murmur is PDA and what direction
continuous left to right
what are surgical and medical tx for PDA
sx: canine ductal occluded
Medical: vetmedin, diuretic stage C
what direction is a reverse PDA
right to left
t or f: no murmur with reverse PDA
true
what is eisenmenger syndrome
Increase pulmonary vascular resistance, increase pressure on the right side (should decrease after birth)
if you see puppy with cyanosis of gingiva, prepuce/vulva what should you be concerned about
reverse PDA
do patients with reverse PDA get right or left sided CHF
right sided
what type of murmur is VSD
loud systolic murmur, right sided sternal border
with a VSD there is __dilation
left ventricular
with VSD is a louder or softer murmur more concerning
softer- means larger defect
what type of murmur is pulmonic stenosis
loud ejection murmur over left base
in pulmonic stenosis there are normal __pulses and abnormal __pulses
femoral, jugular
what are the outcomes of pulmonic stenosis
- Right ventricular hypertrophy
- Arrhythmia/ sudden death
- RCHF
how do you dx aberrant coronary
- Echo
- Confirmed with aortic root injection or CT
what procedure can you do for aberrant coronary and what is the risk
tx/sx: balloon valvuloplasty
Risk: tear PA
what is surgical tx for valvular pulmonary stenosis
ballon valvuloplasty
