Physiological changes in pregnancy :
*The functional residual capacity and residual volume are decreased due to elevated diaphragm. GFR increases by 50% Cardiac output increases by 40% Hemoglobin and hematocrit decreases. Reference : William's Textbook of Obstetrics 24th edition page 62
Decreased residual volume
Decreased GFR
Decreased Cardiac output
Increased Haematocrit
General obstetrics