Physiology

Question 1

Partial pressure of oxygen (Pa O2) in normal arterial blood

Answer 1

100 mm Hg

Question 2

Partial pressure of oxygen in mitochondrion

Answer 2

4-22 mmHg

Question 3

Delivery of O2 (DO2)

Answer 3

DO2=CaO2*Q
CaO2 arterial blood content
Q- blood flow (cardiac output)

Question 4

Arterial blood content (Ca O2)

Answer 4

CaO2=1,34HbSaO2+0.003*PaO2

Question 5

causes of hypoxemia

Answer 5

1) alveolar hypoventilation
2) diffusion impairment
3) ventilation -perfusion mismatch
4) right -to-left shunt