Term
| 3 fetal shunts that charactarize normal fetal circulation |
|
Definition
ductus venosus
foramen ovale
ductus arteriousus |
|
|
Term
| fetal circulation with highest -> lowest O2 content |
|
Definition
umbilical vein
ductus venosus (1/2 bypasses liver)
IVC
foramen ovale
left atrium
left ventricle -> coronary arteries and brachiocephalic arteries
(SVC -> tricuspid valve -> RV)
ductus arteriousus (90% bypasses lungs)
lower body of fetus |
|
|
Term
| changes in fetal circulation at birth |
|
Definition
1. umbilical cord clamping -> increased systemic vascular resistance
2. breathing -> fall in pulmonary vascular resistance
-> increae pulmonary blood flow, increase LA volume and pressure, closure of foramen ovale, closure of ductus arteriousus, collapse of ductus venosus |
|
|
Term
normal postnatal circulation:
RA mean pressure
LA mean pressure
RV and pulmonary artery systolic pressure
right heart saturation
left heart saturation |
|
Definition
RA mean pressure - 2 mm Hg
LA mean pressure - 4 mm Hg
RV and pulmonary artery systolic pressure - 20% systemic (LV and Ao)
right heart saturation - 75%
left heart saturation - 96% |
|
|
Term
| Acyanotic Congenital Heart Diseases |
|
Definition
Obstructive
- pulmonary stenosis
- aortic stenosis
- coarctation of aorta
Left to right shunts
- ventricular septal defect
- atrial septal defect
- patent ductus arteriosus |
|
|
Term
| Cyanotic congenital heart disease |
|
Definition
Right to left shunts
- Tetrology of Fallot
- Transposition of the Great Arteries
- Tricuspid Atresia
(total anomalous pulmonary venous connection)
(truncus arteriosus) |
|
|
