This document discusses the circulatory systems of the uterus and placenta during pregnancy. It details the volume of blood flow, blood pressures, and oxygen saturation levels in the uterine arteries and veins, umbilical artery and vein, and placenta during contractions and relaxation. Fetal blood flow through the placenta is approximately 400 ml/min.

1. SHARONTREESAANTONY
FIRSTYEAR M.SC NURSING
GOVT. COLLEGE OF NURSING
KOTTAYAM

3.  Utero placental circulation
 Feto placental circulation

5. VilliInter villous
space
Maternal
artery Maternal
vein

8.  Volume of blood : 150 ml
 Blood flow : 500 -600 ml /min
 Pressure
 During contraction : 30 -50 mmHg
 During relaxation : 10 -15 mm Hg
 Pressure
 supplying uterine artery:70 -80 mmHg
 Draining uterine vein: 8 mmHg

10.  Fetal blood flow through the placenta:
400 ml/min
 Pressure
 Umbilical artery:60 mmHg
 Umbilical vein :10 mmHg
 Capillary : 20 -40 mmHg

11.  Oxygen saturation
 Umbilical artery:50-60 %
 Umbilical vein :70-80 %
 Partial pressure of oxygen
 Umbilical artery :20-25 mmHg
 Umbilical vein :30-40mmHg