Which oxygen delivery device provides a precise, fixed fraction of inspired oxygen and is useful when controlled oxygen concentration is required?
Correct answer: D. Venturi mask
- A. Nasal cannula
- B. Simple face mask
- C. Non-rebreather mask
- D. Venturi mask
Explanation
A Venturi mask uses interchangeable adapters to deliver a fixed oxygen concentration. A nasal cannula and simple mask provide less precise concentrations, while a non-rebreather mask is designed for a high oxygen concentration rather than precise control.
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About Oxygen Therapy and Airway Care
Airway care includes positioning, suctioning, coughing and deep-breathing exercises, incentive spirometry, oxygen delivery devices and humidification. Questions address indications, flow rates, safety precautions and monitoring for hypoxia or oxygen toxicity, while distinguishing nasal cannula, simple mask, non-rebreather mask and Venturi mask use.
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