Pulmonary Flashcards
1
Q
Which patients have decreased functional residual capacity (FRC)?
A
- obese patients
- pregnant patients
- ARDS patients
2
Q
A decrease in functional residual capacity (FRC) is characteristic in ARDS. A decreased FRC results in:
A
- perfusion of unventilated alveoli 2. increased intrapulmonary shunting
3
Q
A fall in pO2 from 80 to 40 in your ventilated patient will
A
Decrease the saturation of hemoglobin with oxygen (O2 saturation) to about 70%
4
Q
What is the definition of lung compliance?
A
Volume change per unit of pressure
5
Q
What happens when there is a DECREASE in surfactant?
A
Lung compliance DECREASES
6
Q
Definition of funtional residual capacity:
A
Sum of the expiratory reserve volume and residual volume
7
Q
When going from upright to supine position, what happens to vital capacity (VC) and functional residual capacity (FRC)?
A
The VC and FRC both DECREASE
