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 ["A","C"]
Explanation
A. Raise the head of the bed to high Fowler's position: This promotes optimal lung expansion and drainage, reduces aspiration risk, and facilitates easier tracheostomy care.
B. Remove the inner cannula with the ungloved hand: Sterile technique is required when handling the inner cannula to prevent infection.
C. Suction tracheostomy before beginning care: Suctioning clears secretions and ensures better visibility for care, reducing the risk of aspiration during the procedure.
D. Clean cannula with gauze and replace and lock: The inner cannula should be cleaned per protocol using sterile saline and replaced securely.
Correct Answer is D
Explanation
A. Perform tracheostomy care for the client every 4 hr: Tracheostomy care is performed based on the assessment of the need for cleaning and secretion management rather than a fixed time schedule.
B. Place the client in a lateral recumbent position prior to tracheostomy care: This position does not facilitate optimal visualization of the tracheostomy site. The Fowler's or semi-Fowler's position is preferred.
C. Clean the tracheostomy stoma with a chlorhexidine solution: Chlorhexidine is too harsh for mucosal surfaces and can cause irritation. Normal saline is recommended for cleaning.
D. Preoxygenate the client for 10 seconds prior to tracheostomy care: Preoxygenation for at least 30 to 60 seconds is recommended to prevent hypoxia during suctioning.
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