A 10-year-old child with pneumonia is receiving oxygen at 5 L/minute via a nasal cannula.
When planning care for this child, what principle of oxygen administration should the nurse keep in mind?
Avoid administering oxygen at high levels for extended periods.
Increase the oxygen rate during sleep to compensate for a slower respiratory rate.
Taking a sedative at bedtime slows the respiratory rate, which decreases oxygen needs.
Oxygen is less toxic when it is humidified with a hydration source.
The Correct Answer is A
Choice A rationale
Oxygen therapy is a crucial part of the management for patients with severe pneumonia. However, prolonged administration of high concentrations of oxygen can potentially lead to oxygen toxicity, resulting in damage to the cells of the lungs. This is due to the production of
reactive oxygen species which can damage cell structures. Therefore, it is important to avoid administering oxygen at high levels for extended periods.
Choice B rationale
While it might seem logical to increase the oxygen rate during sleep due to a slower respiratory rate, this is not typically recommended. The body’s oxygen requirements do not significantly change during sleep and increasing the oxygen rate could potentially lead to hyperoxia.
Choice C rationale
Sedatives can indeed slow the respiratory rate, but this does not decrease oxygen needs. In fact, it could potentially lead to respiratory depression and hypoxia, especially in a patient with a respiratory illness like pneumonia.
Choice D rationale
Humidification of oxygen can improve patient comfort, especially with high flow rates, by preventing dryness in the nasal passages. However, it does not make oxygen less toxic.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Activating the synchronization mode is important during cardioversion to avoid delivering a shock during the vulnerable period of cardiac repolarization, which could potentially cause a life-threatening arrhythmia. However, it is not the most crucial action.
Choice B rationale
Choosing a monitor lead with a tall R wave can help ensure that the cardioverter-defibrillator can sense the patient’s intrinsic cardiac activity. However, this is not the most crucial action.
Choice C rationale
Administering the prescribed sedative is the most crucial action before initiating cardioversion. Sedation is necessary to ensure patient comfort and cooperation during the procedure, as cardioversion can be painful.
Choice D rationale
Verifying the prothrombin time (PT) is important in patients receiving anticoagulation therapy, as atrial fibrillation increases the risk of thrombus formation. However, it is not the most crucial action before initiating cardioversion.
Correct Answer is D
Explanation
Choice A rationale
Administering the medication at 1000, 1600, 2200, and 0400 would not be the best schedule because it does not evenly distribute the doses throughout the day. This could lead to periods of subtherapeutic medication levels and periods of potential toxicity.
Choice B rationale
Administering the medication with meals and a bedtime snack is not the best schedule for this medication. While some medications need to be administered with food, there is no indication
that this medication needs to be. Furthermore, this schedule could lead to uneven distribution of the medication throughout the day.
Choice C rationale
Giving the medication in equally divided doses during waking hours is not the best schedule because it does not take into account the half-life of the medication or the patient’s sleep schedule. This could lead to subtherapeutic levels of the medication during the night.
Choice D rationale
Administering the medication at 0800, 1200, 1600, and 2000 is the best schedule for this medication. It evenly distributes the doses throughout the day, which can help maintain a therapeutic level of the medication and reduce the risk of toxicity.
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