congenital cardiac evaluation and physiology Flashcards
1
Q
at birth what is the PVR
A
8 woods units
2
Q
at what age does the PVR drop to normal 2 woods units
A
8 weeks
3
Q
what is the normal PVR to SVR ratio in an infant
A
1:5
4
Q
what are cutoff points for PVR or ratio for which surgery is off the table
A
0.7:1 pvr:svr or 8-10 woods units
5
Q
what is a common way to describe pulmonary htn based on ratio of pa to systemic pressures
A
greater than 0.5 to 1
