A patient with severe full-thickness burns to the face, neck, and upper chest is admitted with suspected inhalation injury and hypoxemia. Which oxygen delivery method is most appropriate to ensure delivery of high-concentration, humidified oxygen in this situation?

1. A

   Nasal cannula

2. B

   Simple face mask

3. C

   Oxygen tent

4. D

   Non-rebreather mask

Appeared in: NORCET 9 Prelims-2025

Explanation

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• A non-rebreather mask is a high-flow device that delivers the highest oxygen concentration (60-95%) of any mask, which is essential for treating severe hypoxemia.
• Inhalation injury causes inflammation and fluid buildup in the lungs, severely impairing gas exchange and requiring high levels of supplemental oxygen.
• According to the ABCs (Airway, Breathing, Circulation) of emergency care, treating life-threatening hypoxemia is the immediate priority, even if it means applying a mask over facial burns.
• The device features a reservoir bag and one-way valves designed to minimize the rebreathing of exhaled air and maximize the fraction of inspired oxygen (FiO2).

Why Other Options Were Wrong

• Option A: A nasal cannula is a low-flow device that delivers a maximum of 44% oxygen, which is insufficient for a patient with severe hypoxemia and inhalation injury.
• Option B: A simple face mask delivers only a moderate oxygen concentration (35-50%), which is inadequate to correct the severe hypoxemia associated with this patient's condition.
• Option C: An oxygen tent (or face tent) cannot deliver a precise or high concentration of oxygen. While it provides good humidification and is loose-fitting, it is an open system unsuitable for treating life-threatening hypoxemia.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Selection of appropriate oxygen delivery device for a patient with severe hypoxemia and inhalation injury to guide bedside assessment, documentation, and the next nursing action.
• This scenario highlights the critical nursing principle of prioritizing interventions based on the ABCs (Airway, Breathing, Circulation). Correcting life-threatening hypoxemia (Breathing) is always a top priority.
• Nurses must be proficient in selecting the correct oxygen delivery device based on the patient's oxygenation status and underlying pathology. Using the wrong device can lead to clinical deterioration.
• In patients with facial burns, meticulous skin care and assessment are required when using a face mask. The nurse should look for ways to pad the mask and relieve pressure to prevent further injury, without compromising oxygen delivery.

How to Approach the Question

• First, identify the core clinical problem from the stem. The key phrases are 'severe full-thickness burns,' 'suspected inhalation injury,' and 'hypoxemia.' This combination points to a life-threatening respiratory emergency.
• Next, determine the goal of the intervention. The question explicitly asks for the 'most appropriate' method for 'high-concentration' oxygen.
• Evaluate each option based on its ability to deliver high-concentration oxygen. Recall the FiO2 capabilities of each device.
• Eliminate options that are low-flow or provide insufficient oxygen concentration. A nasal cannula (max ~44%) and a simple face mask (max ~50%) are inadequate for severe hypoxemia.
• Compare the remaining options. An oxygen tent provides variable, uncontrolled FiO2. A non-rebreather mask is specifically designed to deliver high FiO2 (up to 95%).
• Prioritize the interventions. The need to correct life-threatening hypoxemia outweighs the potential risk of skin irritation from the mask on the burned face. Therefore, the non-rebreather mask is the correct choice.

Concept Tested & Keywords

• Concept Tested: Selection of appropriate oxygen delivery device for a patient with severe hypoxemia and inhalation injury.
• Stem keywords: severe full-thickness burns, face, neck, upper chest, inhalation injury, hypoxemia
• Lead-in keywords: most appropriate, high-concentration, humidified oxygen
• Clinical cues: The combination of 'severe hypoxemia' and 'inhalation injury' indicates a life-threatening respiratory emergency requiring maximal oxygen support.

Question ID

QsAMrB_FSCqvTaPpTQmDzO

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Reference Book

E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 7-9

E6 Nursing Fundamentals Taylor p. 731-733

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 663-665