Cardiac wink winks Flashcards
What are formed from the mesodermal cells?
2 longitudinal cell clusters known as angioblastic cords
When in development does the heart begin to beat?
Day 22-23
1 mo becomes recognizable as heart and not just cords
When do the four chambers form?
28 days
When do the septa and chordae tendinae form?
8 wks
What does the umbilical cord consist of?
2 umbilical arteries
1 umbilical vein
What do the umbilical arteries do?
Take deoxygenated blood away from fetus
Goes through placenta to mom to oxygenate
What does the umbilical vein do?
Carry oxygenated blood back to baby
Foramen ovale
Flap that passes blood from right atrium to left atrium
Ductus arteriosus
Passes blood from pulmonary artery to aorta
What is the general cause of blue baby syndrome?
Ductus arteriosus or foramen ovale not closing properly
Eisenmenger syndrome
When a left-to-right shunt eventually forces the direction to reverse, causing right-to-left flow to supervene accompanied by the physical findings of hypoxemia and cyanosis
What is the most common cyanotic congenital heart dz after infancy?
Tetralogy of Fallot
What will be seen on CXR in tetralogy of Fallot?
Boot-shaped heart
What is tx for Tetralogy of Fallot?
Subacute bacterial endocarditis prophylaxis for life
Surgical repair
What is seen on CXR in transposition of great arteries?
Egg on a string
String is aorta and pulmonary artery
What is the 1st line tx for transposition of the great arteries?
Prostaglandin E
Prostaglandins keep shunts open
What is the first line tx for tricuspid atresia?
Prostaglandin E