Hypoxemia Flashcards

1
Q

Alveolar-arterial oxygen gradient (normal)

A

10-20 mmHg

Age/4 + 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Causes of hypoxemia (5)

A
  1. Low inspired oxygen
  2. Alveolar hypoventilation
  3. Diffusion impairment
  4. V/Q mismatch
  5. Shunting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Low inspired oxygen

A

normal A-a gradient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Alveolar hypoventilation

A

normal A-a gradient
Hypercapnia
correct with supplemental oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Diffusion abnormalities

A

A-a normal at rest, may be elevated during exercise
rare observation
correct with supplemental oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

V/Q mismatch

A

A-a gradient elevated

improve with supplemental oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Shunt

A

A_a gradient elevated

does not improve with supplemental oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly