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?

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?

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?

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?

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?

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?

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