Question

I know the answers are A, A, C and D but I don't know how to arrive at those answers! Could you please walk me through th calculations.

If, Alice's cardiac output and tidal volume both increase by 50% but respiratory rate remains unaltered, what effect would that have on _______ (compared to just before the increase in cardiac output and tidal volume)

88) PO2 at the alveoli: a) increased by 10 mmHg, b) largely unchanged, c) decreased by 10 mmHg

89) [O2] at the left atrium: a) increased by 20 %, b) largely unchanged, c) decreased by 5-10%, d) decreased by 30-50%

90) PO2 at the right ventricle (mixed venous PO2):

a) increased by 10 mmHg, b) largely unchanged, c) decreased by 10 mmHg

91) Oxygen delivery to the systemic tissues

a) decreased by 2/3

b) decreased by 10-20%

c) largely unchanged

d) increased by 20-40%

e) increased by 100%