RESP AND GI POWERPOINT

Question 1

PaO2

Answer 1

Partial pressure of oxygen in arterial blood

Question 2

What PaO2 lvl indicates hypoxemia

Answer 2

less than 80mmHg

Question 3

5 causes of hypoxemia

Answer 3

1. Hypoventilation
2. Low FIO2
3. Diffusion barrier impairment
4. V/Q miss match
5. Shunt

Question 4

PAO2

Answer 4

Partial pressure of oxygen in the alveoli

Question 5

If healthy, PaO2 should almost _______________ PAO2

Answer 5

Equal

Question 6

PaO2 - PAO2 gradient is usually less than ________________ when breathing room air

Answer 6

15mmHg

Question 7

PAO2 is decreased by 2

Answer 7

1. Decreased FIO2
2. Increased CO2

Question 8

One cause of hypoxemia is hypoventilation from slow or shallow breathing. An inadequate resp rate or low tidal volume causes an increase in ____________ in alveolus

Answer 8

CO2

Question 9

3 causes of hypoventilation

Answer 9

1. Drugs
2. Neurological disease
3. Resp muscle weakness

Question 10

Tx of hypoventilation

Answer 10

Increase FIO2 (may need a ventilator)