Respiratory Phys - Oxygen Content

Question 1

Oxygen Content =

Answer 1

(O2 binding capacity x % saturation) + dissolved O2

Question 2

Normal [Hb] in blood =

Answer 2

15 g/dL

Question 3

Cyanosis results when deoxygenated Hb > ?

Answer 3

5 g/dL

Question 4

Normally, 1 g Hb can bind how much O2?

Answer 4

1.34 mL

Question 5

What happens to oxygen content of arterial blood, O2 saturation, and arterial PO2 as Hb falls?

Answer 5

Oxygen content decreases as Hb falls

O2 saturation and arterial PO2 remain the same

Question 6

O2 binding capacity in normal human is approximately

Answer 6

20.1 mL O2/dL

Question 7

CO x O2 content of blood =

Answer 7

O2 delivery to tissues

Question 8

Hb level, %O2 sat of Hb, Dissolved O2 (PaO2), and Total O2 content in a patient suffering from CO poisoning.

Answer 8

Hb level: normal
%O2 sat: Decreased (CO competes with O2)
Dissolved O2: Normal
Total O2 Content: Decreased

Question 9

Hb level, %O2 sat of Hb, Dissolved O2 (PaO2), and Total O2 content in a patient suffering from Anemia.

Answer 9

Hb level: decreased
%O2 sat: normal
Dissolved O2: Normal
Total O2 Content: Decreased

Question 10

Hb level, %O2 sat of Hb, Dissolved O2 (PaO2), and Total O2 content in a patient suffering from Polycythemia.

Answer 10

Hb level: increased
%O2 sat: normal
Dissolved O2: Normal
Total O2 Content: Increased

Question 11

Polycythemia:

Answer 11

disease state in which the proportion of blood volume that is occupied by red blood cells increases