A nurse is caring for a patient who requires oxygen therapy due to hypoxia. What is the goal of oxygen therapy for this patient?

To provide the highest fraction of inspired oxygen (FiO2) possible.

To use the lowest FiO2 that achieves an acceptable blood oxygen level without harmful side effects.

To maintain a constant FiO2 regardless of the patient's breathing pattern.

To deliver a fixed amount of oxygen that is independent of the patient's condition.

Answer and Explanation

The Correct Answer is B

Choice A rationale:

The goal of oxygen therapy is not to provide the highest fraction of inspired oxygen (FiO2) possible. This approach can be harmful because excessively high FiO2 levels can lead to oxygen toxicity and other side effects, especially in patients with certain conditions like chronic obstructive pulmonary disease (COPD).

Choice B rationale:

The goal of oxygen therapy is to use the lowest FiO2 that achieves an acceptable blood oxygen level without harmful side effects. This approach is known as titrating the oxygen therapy to the patient's needs and helps prevent potential complications associated with excessive oxygen administration.

Choice C rationale:

Maintaining a constant FiO2 regardless of the patient's breathing pattern is not the goal of oxygen therapy. In some cases, patients may require varying FiO2 levels based on their respiratory status, so it is essential to adjust the oxygen delivery accordingly.

Choice D rationale:

Delivering a fixed amount of oxygen that is independent of the patient's condition is not the goal of oxygen therapy. Oxygen therapy should be individualized and tailored to the patient's specific needs to optimize its effectiveness and safety.

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Correct Answer is C

Explanation

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.

A. Nasal cannula. B. Simple face mask. C. Venturi mask. D. Non-rebreather mask.

Correct Answer is ["A","B","D"]

Explanation

Choice A: Nasal cannula is a low-flow oxygen delivery system. It delivers a variable oxygen concentration depending on the patient's breathing pattern.

Choice B: Simple face mask is also a low-flow oxygen delivery system. It provides a variable oxygen concentration based on the patient's respiratory rate and tidal volume.

Choice C: Venturi mask is not a low-flow system. It is a high-flow oxygen delivery device that provides a fixed oxygen concentration by mixing oxygen with room air.

Choice D: Non-rebreather mask is considered a low-flow oxygen delivery system. It provides a high concentration of oxygen but does not ensure a precise oxygen concentration due to varying patient ventilation.

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A nurse is caring for a patient who requires oxygen therapy due to hypoxia. What is the goal of oxygen therapy for this patient?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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?

Correct Answer is C

Explanation

(Select all that apply): A nurse is educating a group of patients about different oxygen delivery devices. Which of the following are examples of low-flow oxygen delivery systems?

Correct Answer is ["A","B","D"]

Explanation

A nurse is caring for a patient who requires oxygen therapy due to hypoxia. What is the goal of oxygen therapy for this patient?

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