A patient requires a precise concentration of 40% oxygen. Which of the following devices would best allow for this?
A nonrebreather mask
A simple face mask
A Venturi mask
A partial rebreathing mask
The Correct Answer is C
A. A nonrebreather mask: This provides high concentrations of oxygen (60% to 100%) and lacks precise control over oxygen delivery.
B. A simple face mask: Delivers oxygen concentrations between 40% and 60%, but the oxygen concentration varies depending on the client's breathing pattern.
C. A Venturi mask: Provides precise and consistent oxygen delivery, making it the best choice for clients needing an exact concentration of 40% oxygen.
D. A partial rebreathing mask: Delivers concentrations between 50% and 75% without precise control.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 25 and 50 mm Hg: This pressure is insufficient to effectively clear oral secretions.
B. 80 and 120 mm Hg: Recommended for safe and effective oral suctioning to prevent mucosal trauma while adequately clearing secretions.
C. 120 and 180 mm Hg: Excessive pressure can cause mucosal damage and trauma.
D. 50 and 75 mm Hg: This pressure is too low to be effective for adult oral suctioning.
Correct Answer is B
Explanation
A. Food: More common in conscious individuals who are eating.
B. Tongue: The tongue can fall back and block the airway in an unconscious person.
C. Foreign object: Possible but less common than the tongue in unconscious individuals.
D. Medication in pill form: Rare cause of airway obstruction.
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