Congenital heart disease part I
Maternal-fetal circulation
1. the ___ ___ delivers O2ated blood from the placenta into the portal sinus in the liver and ductus
venosus in the IVC
2. 2/3 of the blood that enters the RA goes through the ___ ___ to the ___, ___, ___ then to the head
and UEs (it ___ the lungs)
3. the 1/3 of blood that stays in the RA goes to the ___ then PA
(1) 90% of the blood in the PA goes through the ductus arteriosus to the ___ (again, ___ the lungs)
(2) 10% goes through the ___ vasculature
4. deO2ated blood returns to the heart via the ___ and then mixes with the O2ated blood from the
umbilical ___ - correct answer ✔✔1. umbilical vein
2. foramen ovale; LA; LV; aorta; bypasses
3. RV
(1) aorta; bypassing
(2) pulmonary
4. SVC; vein
Maternal-fetal circulation
5. blood that doesn't leave the aortic arch goes down the ___ ___ where it leaves the fetus via the
umbilical ___ back to the placenta
6. ___ ___ resistance is higher than ___ pressure so blood flow to the ___ is minimal and flow to the
placenta is high (this is why blood isn't going to the ___, it wants to go down the path of least ___)
7. ___ pressure is lower than ___ pressure which keeps the ___ ___ open (blood flows from ___ to ___)
Newborn circulation
1. at birth the newborn takes their first breath, which creates ___ ___ of the lungs which causes a ___ in
pulmonary vascular resistance
2. with ___ pulm pressures more blood is circulated through the ___ which then gets ___ at a higher rate
than it did in fetal development - correct answer ✔✔5. descending aorta; arteries
, 6. pulmonary vascular; systemic; lungs; lungs; resistance
7. LA; RA; foramen ovale; right; left
1. gas expansion; decrease
2. lower; lungs; O2ated
Newborn circulation
3. the increased ___ in the blood along with increased ___ pressures cause the ___ ___ to close (should
close w/in 24-48 hrs after birth, this is b/w what 2 structures?)
4. with increased blood returning to the ___ from the lungs the ___ pressure increases and overcomes
the pressure in the ___, which closes the ___ ___
derivatives of fetal vascular structures
1. fetal structures are below, what are their corresponding adult structures?
(1) foramen ovale
(2) umbilical vein
(3) ductus venosus
(4) ductus arteriosus - correct answer ✔✔3. O2; aortic; ductus arteriosus; aorta and pulm artery
4. LA; LA; RA; foramen ovale
1.
(1) fossa ovalis
(2) ligamentum teres
(3) ligamentum venosus
(4) ligamentum arteriosum
Congenital heart defects
1. acyanotic heart defects: increased blood flow to the ___ (___--> ___ shunt)
(1) this means you have O2ated blood on the ___ side mixing with ___ deO2ated blood--> ___ blood in
pics
Maternal-fetal circulation
1. the ___ ___ delivers O2ated blood from the placenta into the portal sinus in the liver and ductus
venosus in the IVC
2. 2/3 of the blood that enters the RA goes through the ___ ___ to the ___, ___, ___ then to the head
and UEs (it ___ the lungs)
3. the 1/3 of blood that stays in the RA goes to the ___ then PA
(1) 90% of the blood in the PA goes through the ductus arteriosus to the ___ (again, ___ the lungs)
(2) 10% goes through the ___ vasculature
4. deO2ated blood returns to the heart via the ___ and then mixes with the O2ated blood from the
umbilical ___ - correct answer ✔✔1. umbilical vein
2. foramen ovale; LA; LV; aorta; bypasses
3. RV
(1) aorta; bypassing
(2) pulmonary
4. SVC; vein
Maternal-fetal circulation
5. blood that doesn't leave the aortic arch goes down the ___ ___ where it leaves the fetus via the
umbilical ___ back to the placenta
6. ___ ___ resistance is higher than ___ pressure so blood flow to the ___ is minimal and flow to the
placenta is high (this is why blood isn't going to the ___, it wants to go down the path of least ___)
7. ___ pressure is lower than ___ pressure which keeps the ___ ___ open (blood flows from ___ to ___)
Newborn circulation
1. at birth the newborn takes their first breath, which creates ___ ___ of the lungs which causes a ___ in
pulmonary vascular resistance
2. with ___ pulm pressures more blood is circulated through the ___ which then gets ___ at a higher rate
than it did in fetal development - correct answer ✔✔5. descending aorta; arteries
, 6. pulmonary vascular; systemic; lungs; lungs; resistance
7. LA; RA; foramen ovale; right; left
1. gas expansion; decrease
2. lower; lungs; O2ated
Newborn circulation
3. the increased ___ in the blood along with increased ___ pressures cause the ___ ___ to close (should
close w/in 24-48 hrs after birth, this is b/w what 2 structures?)
4. with increased blood returning to the ___ from the lungs the ___ pressure increases and overcomes
the pressure in the ___, which closes the ___ ___
derivatives of fetal vascular structures
1. fetal structures are below, what are their corresponding adult structures?
(1) foramen ovale
(2) umbilical vein
(3) ductus venosus
(4) ductus arteriosus - correct answer ✔✔3. O2; aortic; ductus arteriosus; aorta and pulm artery
4. LA; LA; RA; foramen ovale
1.
(1) fossa ovalis
(2) ligamentum teres
(3) ligamentum venosus
(4) ligamentum arteriosum
Congenital heart defects
1. acyanotic heart defects: increased blood flow to the ___ (___--> ___ shunt)
(1) this means you have O2ated blood on the ___ side mixing with ___ deO2ated blood--> ___ blood in
pics
