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1.Blood volume: immediately after birth averages about 300ml. (75mL additional blood from umbilical cord â if itâs still attached) But the fluid is lost into the neonateâs tissue spaces again - 300mL maintained. 2.Cardiac Output: in average 500ml/min.
Physiological Changes During Pregnancy. During pregnancy, your body goes through many emotional and physiological changes. These changes are a natural part of pregnancy and a better understanding will help you cope with them. Pregnancy is more than just the growth of the uterus and the embryo. Fertilization and early embryo formation cause significant changes in all of your body's systems.