Chapter 7; Final Considerations in Ventilator Setup

Chapter 7; Final Considerations in Ventilator Setup

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. What fractional inspired oxygen (F_IO₂) setting should be set on the ventilator when the patient currently has a partial pressure of oxygen (P_aO₂) of 53 mm Hg while receiving 50% oxygen and the desired P_aO₂ is 90 mm Hg?

a.	64%
b.	74%
c.	85%
d.	95%

 

 

ANS:   C

 

 

DIF:    2                      REF:    pg. 104

 

2. A patient’s baseline arterial blood gas (ABG) reveals a partial pressure of oxygen (P_aO₂) of 78 mm Hg while receiving 35% supplemental oxygen. What should the ventilator fractional inspired oxygen (F_IO₂) be set at to obtain a target P_aO₂ of 95mm Hg?

a.	34%
b.	43%
c.	55%
d.	67%

 

 

ANS:   B

 

 

DIF:    2                      REF:    pg. 104

 

3. A patient receiving 60% oxygen from an air entrainment mask has a partial pressure of oxygen (P_aO₂) of 45 mm Hg. The patient is being intubated and the ventilator set up. What is the appropriate fractional inspired oxygen (F_IO₂) to achieve a P_aO₂ of 60 mm Hg?

a.	0.65
b.	0.75
c.	0.8
d.	0.95

 

 

ANS:   C

 

DIF:    2                      REF:    pg. 104

 

4. The goal of selecting a specific oxygen concentration is to try to achieve clinically acceptable arterial oxygen tensions within which of the following ranges?

a.	40 and 55 mm Hg
b.	50 and 60 mm Hg
c.	60 and 100 mm Hg
d.	100 and 120 mm Hg

 

 

ANS:   C

The goal of selecting a specific fractional inspired oxygen (F_IO₂) for a patient is to achieve a clinically acceptable arterial oxygen tension (e.g., 60-100 mm Hg).

 

DIF:    1                      REF:    pg. 104

 

5. Following successful cardiac resuscitation, a patient being placed on mechanical ventilation should have which of the following fractional inspired oxygen (F_IO₂) settings?

a.	0.5
b.	0.6
c.	0.8
d.	1

 

 

ANS:   D

Using a high oxygen concentration following a cardiac arrest can provide a way of restoring normal oxygenation and replacing tissue oxygen storage when oxygen debt and lactic acid accumulations occur, as with this patient.

 

DIF:    3                      REF:    pg. 104

 

6. What is the range for setting flow triggering?

a.	1 to 10 L/min
b.	10 to 15 L/min
c.	12 to 16 L/min
d.	20 to 30 L/min

 

 

ANS:   A

Flow triggering is set in a range of 1 to 10 L/min below the base flow depending on the selected ventilator.

 

DIF:    1                      REF:    pg. 104