Hypoxemia: V/Q Mismatch

Question 1

What is your V/Q when you have adequate ventilation and perfusion

Answer 1

1 (0.8)

Question 2

Two types of V/Q mismatch

Answer 2

1. Obstructed with perfusion (0/1)
2. Alveolus ventilated without perfusion (1/0)

Question 3

What could cause the alveolus to have adequate ventilation, but no perfusion

Answer 3

Pulmonary emboli

Question 4

Would increasing FIO2/ supplemental oxygen help obstructed, but perfused alveoli V/Q mismatch (0/1)

Answer 4

NO

Question 5

Would increasing FIO2/ supplemental oxygen help Alveolus with ventilation, but not perfused V/Q mismatch (1/0)

Answer 5

NO

Question 6

V/Q = 0/1 means

Answer 6

Hypoxemia

Question 7

V/Q = 1/0 means

Answer 7

Hypercapnia

Question 8

Another cause of hypoxemia is a shunt where blood passes from _____________ to _____________ of the circulation without being fully ________________

Answer 8

Right to left
Oxygenated

Question 9

Which cause of hypoxemia is a result of arterial blood being diluted with deoxygenated blood

Answer 9

Shunt

Question 10

Positive pressure ventilation for critical care is indicated if a patients’ PaO2 is less than ________ despite O2 supplementation and tx of primary disease

Answer 10

60mmHg