When does systemic vascular resistance in infants begin to increase?
A)One month before birth
B)During the beginning stage of labor
C)One hour after birth
D)Once the placenta is removed from circulation

Question

Quizplus · Accepted Answer

The low-resistance placenta is removed from circulation, which causes an immediate increase in systemic vascular resistance to approximately twice of that before birth.

When Does Systemic Vascular Resistance in Infants Begin to Increase