In pregnancy following change takes place -: (A) Tidal volume increase, (B) Arterial p02 decrease, (C) Cardiac output decrease, (D) Respiratory acidosis
Answer is A. Ans. is 'a' i.e., Tidal volume increase Respiratory changes during pregnancyo TLC is reduced by 5%o Subcostal angle increases from 69 to 103.o Tidal volume increases.o PaCO2 fall from 38 to 32 mnvhg & PaO2 rises from 95 t0 105 mm/hgo Pregnancy is a state of respiratory alkalosis.o Cardiac output increases during pregnancy, (already explained)