Question 1

A patient is admitted with an acute exacerbation of COPD. Which oxygen delivery device is most appropriate to avoid the risk of hypercapnia, and why?

Accepted Answer

Venturi mask, because it allows precise control of FiO2 to avoid over-oxygenation.

Question 2

Which of the following is the correct target oxygen saturation range for most acutely ill patients, according to best practice guidelines?

Accepted Answer

$$94\% - 98\%$$

Question 3

A patient is receiving oxygen via nasal cannula at 4 L/min. What is a potential complication of this flow rate?

Accepted Answer

Nasal dryness and discomfort due to drying of the mucosa.

Question 4

Which airway maneuver is depicted in the fourth image, and what is its primary purpose?

Accepted Answer

Head tilt-chin lift; to relieve airway obstruction by moving the tongue away from the posterior pharynx.

Question 5

A non-rebreather mask (shown in the third image) is used in which clinical scenario?

Accepted Answer

For acutely unwell patients needing high concentration oxygen.

Question 6

What is the main risk associated with using a simple face mask (Hudson mask) for oxygen delivery?

Accepted Answer

It does not allow close control of FiO2 and there is a risk of aspiration if the patient vomits.

Question 7

Which of the following statements about oxygen therapy is TRUE?

Accepted Answer

Oxygen is a treatment for hypoxaemia, not for the sensation of breathlessness in non-hypoxaemic patients.

Question 8

A patient with a swollen tongue (as shown in the sixth image) is at risk for which airway complication?

Accepted Answer

Obstructive airway compromise due to mechanical blockage

Question 9

Which device is shown in the second image, and what is its key advantage?

Accepted Answer

Venturi mask; delivers a precise concentration of oxygen.

Question 10

What is the correct method for measuring the appropriate size of an oropharyngeal airway (OPA)?

Accepted Answer

Measure from the patient’s incisors to the angle of the jaw.

Question 11

Which of the following is a key step in the insertion of a nasopharyngeal airway (NPA)?

Accepted Answer

Lubricate the tube and insert gently with the curved side down, aiming towards the occiput.

Question 12

Which of the following is a potential complication of prolonged use of high-flow oxygen (e.g., 15 L/min via non-rebreather mask)?

Accepted Answer

Over-oxygenation, which can be harmful

Question 13

What is the main purpose of humidified oxygen therapy?

Accepted Answer

To reduce drying of mucous membranes and assist in clearing respiratory secretions.

Question 14

Which airway adjunct is shown in the tenth image, and what is its primary use?

Accepted Answer

Nasopharyngeal airway; used to bypass upper airway obstruction.

Question 15

A patient is found unconscious with a suspected airway obstruction. What is the first maneuver you should attempt?

Accepted Answer

Head tilt-chin lift

Question 16

Which of the following is NOT a recommended practice when administering oxygen therapy?

Accepted Answer

Leaving the patient on high-flow oxygen indefinitely without reassessment.

Question 17

Which anatomical structure is most likely to cause airway obstruction in an unconscious patient, as shown in the fifth image?

Accepted Answer

Tongue

Question 18

Which of the following is a key indication for the use of CPAP (Continuous Positive Airway Pressure)?

Accepted Answer

Acute pulmonary oedema

Question 19

What is the correct sequence for inserting an oropharyngeal airway (OPA)?

Accepted Answer

Insert with the curve facing up, then rotate 180 degrees once halfway in.

Question 20

Which of the following is the most appropriate action when a patient’s oxygen saturation falls by $$\geq 3\% or $$below their target range?

Accepted Answer

Increase the oxygen flow rate and reassess the patient promptly.

Oxygen Therapy and Airway Management: Medical Terminology Study Notes

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