All of the following are true about regional blood flow in pregnancy except:
Ans. is b, i.e. Blood flow through skin decreasesRef Dutta Obs 9/e, p 49REGIONAL DISTRIBUTION OF BLOOD FLOW DURING PREGNANCY: Uterine blood flow is increased from 50 ml/ min in non-pregnant state to about 750 ml near term. The increase is due to the combined effect of uteroplacental and fetoplacental vasodilatation. Pulmonary blood flow (normal 6000 ml/min) is increased by 2500 ml/min (i.e. 40% increase). Renal blood flow (normal 800 ml) increases by 400 ml/min (i.e. 50% increase) at 16th week and remains at this level till term. The blood flow through the skin and mucous membranes reaches a maximum of 500 mL/min by 36th week. Heat sensation, sweating or stuffy nose complained by the pregnant women can be explained by the increased blood flow.
Uterine blood flow at term is 750 ml/min
Blood flow through skin decreases
Renal blood flow increases by 50%
Pulmonary blood flow increase
Physiological changes during Pregnancy