Congenital Physiology Flashcards
1
Q
What is the typical pulmonary resistance of a newborn?
A
8 woods units
2
Q
What is the normal pulmonary resistance of an 8 week old infant
A
2 woods units
3
Q
What is the pulmonary to systemic resistance cutoff point when surgical intervention will no longer reverse the PHTN?
A
0.7:1 or PVR 8-10 wood units/m2
4
Q
By what age should CHD w/ pulmonary vascular disease be surgically addressed?
A
1st year of life or before PA > 1/2 systemic pressure
5
Q
Name the three in utero shunts
A
Foramen Ovale, Ductus Arteriorsus, Ductus Venosus
6
Q
What structure does the ductus venous bypass in fetal circulation
A
liver parenchyma
