Which of the following oxygen delivery devices provides the most precise and consistent fraction of inspired oxygen (FiO2) regardless of the patient's breathing pattern?
Nasal cannula.
Simple face mask.
Venturi mask.
Non-rebreather mask.
The Correct Answer is C
Choice A rationale:
Nasal cannula delivers oxygen through two small prongs placed in the patient's nostrils. While it is a commonly used and well-tolerated device, the FiO2 delivered can vary significantly depending on the patient's breathing pattern and respiratory rate. Thus, it does not provide the most precise and consistent FiO2.
Choice B rationale:
Simple face masks cover the nose and mouth and can provide higher FiO2 levels compared to nasal cannulas. However, the FiO2 delivered still depends on the patient's breathing pattern and the mask's fit, making it less precise and consistent than other options.
Choice C rationale:
Venturi masks are designed to deliver a specific and accurate FiO2, regardless of the patient's breathing pattern. These masks have adjustable ports to control the mix of air and oxygen, providing precise oxygen concentrations.
Choice D rationale:
Non-rebreather masks have one-way valves and a reservoir bag to deliver higher concentrations of oxygen. Although they can provide high FiO2 levels, the delivered concentration can vary based on the patient's breathing pattern and the mask's fit.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
Choice A rationale:
Venturi masks are not typically used with tracheostomy patients, as they are more suitable for patients with intact upper airways.
Choice B rationale:
Tracheostomy collars are specifically designed for patients with tracheostomies. They provide oxygen directly to the tracheostomy tube, making them appropriate for weaning tracheostomized patients from mechanical ventilation.
Choice C rationale:
T-piece adapters are commonly used for patients with tracheostomies to deliver oxygen. They are simple devices that deliver oxygen directly to the tracheostomy tube.
Choice D rationale:
Aerosol masks are not specifically designed for tracheostomy patients and may not provide adequate oxygen delivery for them.
Choice E rationale:
Mechanical ventilators are not an oxygen delivery device; instead, they are used to provide mechanical ventilation support to the patient and can incorporate various oxygen delivery systems.
Correct Answer is D
Explanation
Choice A rationale:
Monitoring the patient's respiratory rate, depth, rhythm, and effort is crucial for assessing the effectiveness of oxygen therapy and ensuring proper oxygenation through the tracheostomy collar.
Choice B rationale:
Educating the patient on how to use and care for the tracheostomy collar is essential to ensure the patient's safety and compliance with the therapy.
Choice C rationale:
Implementing safety measures to prevent fire hazards from the oxygen source is crucial, especially when oxygen is delivered via tracheostomy collar, which may have increased oxygen flow rates.
Choice D rationale:
This is the correct choice. All the provided interventions (monitoring respiratory parameters, patient education, and safety measures) are essential components of the plan of care for a patient with a tracheostomy who requires oxygen therapy.
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