A nurse is caring for a patient who is receiving oxygen therapy via non-rebreather mask at 15 L/min. The nurse should recognize that this device has which of the following advantages?(Select all that apply)
It delivers the highest concentration of oxygen among low-flow systems.
It prevents the patient from rebreathing exhaled air.
It provides consistent and precise oxygen delivery.
It allows room air to enter through exhalation ports.
It minimizes the risk of carbon dioxide retention.
Correct Answer : A,B,E
The correct answer is choice a, b, and e.
Choice A rationale:
A non-rebreather mask is designed to deliver a high concentration of oxygen, often deemed the highest among low-flow systems. It achieves this through a reservoir bag that is filled with pure oxygen, which the patient breathes in without the dilution of room air.
Choice B rationale:
This mask has one-way valves that prevent the patient from rebreathing exhaled carbon dioxide. The exhaled air exits through side ports, ensuring that only oxygen from the reservoir is inhaled.
Choice C rationale:
While a non-rebreather mask delivers a high concentration of oxygen, it does not provide a consistent and precise oxygen delivery compared to devices like a Venturi mask, which are designed to deliver a specific and constant oxygen concentration.
Choice D rationale:
The design of a non-rebreather mask does not allow room air to enter through the exhalation ports. The one-way valves are there to ensure that exhaled air does not enter the reservoir bag and that room air does not mix with the oxygen being inhaled.
Choice E rationale:
By delivering a high concentration of oxygen and preventing the rebreathing of exhaled gases, a non-rebreather mask minimizes the risk of carbon dioxide retention, which can be a concern with other oxygen delivery systems that allow for the rebreathing of a portion of exhaled air.
In summary, the non-rebreather mask is advantageous for its ability to deliver a high concentration of oxygen and prevent the rebreathing of exhaled air, which also minimizes the risk of carbon dioxide retention. It is not designed for precise oxygen delivery, nor does it allow the mixing of room air during inhalation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice a. PaO2 80 mmHg.
Choice A rationale:
PaO2 (partial pressure of oxygen in arterial blood) of 80 mmHg indicates that the oxygen therapy has been effective. Normal PaO2 levels range from 75 to 100 mmHg, so a value of 80 mmHg suggests adequate oxygenation.
Choice B rationale:
SaO2 (arterial oxygen saturation) of 88% is below the normal range (typically 95-100%) and indicates hypoxemia, suggesting that the oxygen therapy has not been fully effective.
Choice C rationale:
A respiratory rate (RR) of 32 breaths per minute is significantly higher than the normal range (12-20 breaths per minute) and indicates respiratory distress, suggesting that the oxygen therapy has not been effective.
Choice D rationale:
Blood pressure (BP) of 160/90 mmHg is elevated and indicates hypertension, which is not a direct measure of the effectiveness of oxygen therapy. This finding does not provide information about the patient’s oxygenation status.
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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