Free Practice Quiz Question List

5 Oxygen Therapy and Respiratory Support Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 Oxygen Therapy and Respiratory Support, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

True or false: Oxygen by itself corrects inadequate ventilation and removes carbon dioxide.

A
True
B
False

Fill in the blank

1 point

Oxygen supports , so ignition sources must be kept away from oxygen equipment.

Choose one

1 point

A patient needs short-term oxygen delivery by simple face mask. Which flow-setting approach helps reduce rebreathing of exhaled gas?

A
Set it to 2 L/min because a low flow reduces rebreathing.
B
Use a flow of at least 5 L/min, as commonly required for this device.
C
Use any flow setting because the mask concentration is fixed.
D
Set it below 1 L/min unless the patient is eating.

Written response

1 point

For most acutely ill adults receiving oxygen, the recommended SpO₂ target range is 94–98%. What is the lower bound of that range?

Fill in the blank

1 point

For a patient with COPD or known risk of hypercapnic respiratory failure, a common initial SpO₂ target while blood-gas results are obtained is .

True or false

1 point

True or false: If a patient is failing on high-flow nasal cannula, it is appropriate to continue it for an extended trial even when intubation is necessary.

A
True
B
False

Choose all

1 point

A patient has just started oxygen. Which findings should be assessed to evaluate the patient and the reliability of the saturation reading? Select all that apply.

A
Work of breathing
B
The oxygen device’s brand color
C
Mental status
D
Whether the pulse-oximeter signal is reliable
E
The patient’s preferred meal

Choose one

1 point

A patient has severe hypoxemia and needs rapid, high-concentration oxygen during initial stabilization. Which device and setup best match this need?

A
Nasal cannula, with flow selected mainly for comfort
B
Reservoir (non-rebreather) mask, with enough flow to keep the bag inflated during inspiration
C
Venturi mask, using any adapter and flow setting
D
Simple face mask, set below its required minimum flow

Choose all

1 point

A patient receiving respiratory support is deteriorating. Which findings are reasons to call for emergency or critical-care assistance? Select all that apply.

A
Severe or rapidly increasing work of breathing
B
Exhaustion
C
Stable ability to speak with no distress
D
Inability to protect the airway
E
Reduced consciousness
F
A reliable pulse-oximeter signal by itself

Choose one

1 point

An adult with a COPD exacerbation has an SpO₂ of 84%. Which response is most appropriate?

A
Withhold oxygen until carbon dioxide retention has been ruled out.
B
Aim for an SpO₂ of 100% before checking the patient again.
C
Start oxygen promptly, titrate toward the prescribed target, and obtain blood gases when indicated.
D
Use oxygen without monitoring because the initial saturation is low.

Open ended

1 point

A patient with acute hypoxemic respiratory failure is not maintaining the prescribed target on conventional oxygen. Explain a possible next respiratory-support step and the key safety consideration if the patient worsens or fails to improve.

Written response

1 point

A patient is receiving oxygen through a simple face mask. What is the commonly used minimum flow to reduce rebreathing of exhaled gas?

True or false

1 point

True or false: A reliable SpO₂ reading can show whether a patient is retaining carbon dioxide.

A
True
B
False

Choose one

1 point

An acutely ill adult with COPD is receiving oxygen while blood-gas results are awaited. Which is a common initial SpO₂ target range, unless the prescribed target or local protocol specifies otherwise?

A
94–98%
B
88–92%
C
98–100%
D
80–84%

Written response

1 point

Above what oxygen flow rate may humidification be considered for comfort, according to local practice?

Choose one

1 point

A patient uses oxygen at home. Which safety instruction best reduces fire risk around the equipment?

A
Allow vaping if the oxygen flow is low.
B
Keep a lit candle several metres from the equipment.
C
Keep smoking, vaping, flames, and sparks away from oxygen equipment.
D
Store oxygen beside flammable products as long as the cylinder is secured.

Choose one

1 point

A patient needs controlled oxygen at a specified concentration. Which device is designed for this purpose when set up correctly?

A
A nasal cannula, because its delivered oxygen concentration is consistent regardless of breathing pattern.
B
A Venturi mask, using the correct adapter and flow setting.
C
A simple face mask, because it provides an exact concentration at any flow.
D
A reservoir mask, because its concentration is fixed by the reservoir size.

Choose one

1 point

A patient on oxygen becomes less alert, and hypercapnia is suspected despite a usable SpO₂ signal. What is the most appropriate assessment approach?

A
Increase oxygen until SpO₂ reaches 100%, then reassess the next day.
B
Rely on the pulse-oximeter reading if its signal is reliable.
C
Assess the patient and obtain blood gases when indicated to evaluate hypercapnia or respiratory acidosis.
D
Stop oxygen because it cannot affect ventilation.

Choose one

1 point

A patient with a COPD exacerbation has acute hypercapnic respiratory failure with acidosis. When appropriate and with close supervision, which support is commonly used to assist ventilation?

A
Use closely supervised NIV when appropriate for acute hypercapnic respiratory failure with acidosis.
B
Use a nasal cannula as definitive ventilatory support.
C
Use HFNC without monitoring because it replaces ventilation in all cases.
D
Withhold all respiratory support until carbon dioxide levels normalize.

Written response

1 point

Name one of the two airway routes through which a ventilator may provide invasive breathing support.