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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
At a flow rate of 4 L/min, oxygen therapy through a nasal cannula can increase the risk of oxygen toxicity, especially if used for prolonged periods. Oxygen toxicity can cause damage to the lungs and other organs.
Choice B rationale:
Carbon dioxide retention is not a common complication at this flow rate. It may occur in patients with severe chronic obstructive pulmonary disease (COPD) at higher oxygen flow rates.
Choice C rationale:
Nasal dryness is a common but relatively minor complication of oxygen therapy via nasal cannula. It can cause discomfort but is not a severe concern.
Choice D rationale:
Fire hazard is not directly related to the use of a nasal cannula but rather to the use of oxygen in the presence of flammable materials or near open flames. It is a concern for all oxygen delivery devices, not specific to nasal cannulas.
Correct Answer is B
Explanation
Choice A rationale:
Although a tracheostomy collar provides oxygen directly to the trachea, the advantage specified in the question is related to the ability to breathe room air when disconnected from the oxygen source.
Choice B rationale:
This is the correct answer because a tracheostomy collar has an opening that allows the patient to breathe room air when the oxygen source is disconnected. This feature enables the patient to participate in activities without continuous oxygen delivery, promoting mobility and reducing the feeling of being tethered to an oxygen supply.
Choice C rationale:
A tracheostomy collar does not provide the highest fraction of inspired oxygen (FiO2) among low-flow systems. High-flow systems, such as non-rebreather masks or venturi masks, typically provide the highest FiO2.
Choice D rationale:
A tracheostomy collar does not deliver a fixed amount of oxygen independent of the patient's breathing pattern. Instead, it provides supplemental oxygen in response to the patient's inspiratory effort, which is a characteristic of low-flow oxygen delivery systems.
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