Respiratory class notes

Question 1

What are the 5 causes of hypoxia?

Answer 1

1. ↓ PB (high altitude)
2. Hypoventilation
3. Diffusion
4. V/Q
5. R-L shunt

Question 2

How do you calculate what change in pH should be for a given change in PCO2 in an acute respiratory acidosis?

Answer 2

for every 10 mmHg change in PCO2, you expect a 0.08 change in pH.

Question 3

How much should bicarb increase in chronic acidosis for every 10 mmHg change in PCO2?

Answer 3

3-4

Question 4

What is FiO2 at normal atmospheric levels?

Answer 4

21%

Question 5

What does “ground glass” appearance of the lung hint at as far as disease processes?

Answer 5

inflammatory (not fibrosis)