Patient Data
What is the rationale for the order of supplemental oxygen 10 L/min via nasal cannula? Select the best answer.
To prevent hypoxia and tissue damage due to pneumonia.
To lower the blood pressure and reduce the workload of the heart.
To increase the oxygen saturation and improve the respiratory function.
To dilate the bronchioles and decrease the inflammation of the lungs.
The Correct Answer is A
Choice A rationale:
Supplemental oxygen is given to the patient to prevent hypoxia and tissue damage due to pneumonia. Pneumonia is an infection that inflames the air sacs in one or both lungs, which may fill with fluid or pus, causing cough with phlegm or pus, fever, chills, and difficulty breathing. Hypoxia occurs when the body or a region of the body is deprived of adequate oxygen supply at the tissue level. It can cause serious damage to your heart, brain, and other organs. Hence, supplemental oxygen is administered to ensure that the patient’s tissues receive adequate oxygen.
Choice B rationale:
While supplemental oxygen can indirectly help lower blood pressure by improving oxygen supply and reducing strain on the heart, it is not primarily used for this purpose. Enalapril, which the patient is already taking, is an angiotensin-converting enzyme (ACE) inhibitor that is commonly used to lower blood pressure and reduce the workload of the heart.
Choice C rationale:
Supplemental oxygen does increase the oxygen saturation and improve respiratory function. However, this is a more general rationale for providing supplemental oxygen and not specific to this patient’s condition of pneumonia.
Choice D rationale:
Supplemental oxygen does not directly dilate the bronchioles or decrease inflammation in the lungs. Medications such as bronchodilators and corticosteroids are typically used for these purposes. In this case, supplemental oxygen is being used to prevent hypoxia and tissue damage due to pneumonia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Increasing the supplemental oxygen to 15 L/min via nasal cannula may seem like a logical step given the client’s low oxygen saturation. However, it’s important to note that oxygen therapy should be titrated carefully. Too much oxygen can lead to oxygen toxicity, which can cause cellular damage and worsen the client’s condition. Therefore, this is not the priority action.
Choice B rationale:
Notifying the health care provider of the client’s condition is the priority action. The client’s oxygen saturation is 88% on room air, which is below the normal range of 95% to 100%. This indicates that the client is not getting enough oxygen, which can lead to hypoxia and other serious complications. The health care provider needs to be informed immediately so that appropriate interventions can be initiated.
Choice C rationale:
Administering ibuprofen as ordered for fever is important, but it’s not the priority in this situation. While fever can indicate an infection, which could be contributing to the client’s low oxygen saturation, addressing the immediate issue of hypoxia is more critical.
Choice D rationale:
Obtaining a sputum culture from the client could provide valuable information about the type of bacteria causing the pneumonia and guide antibiotic therapy. However, this is not an immediate priority compared to addressing the client’s low oxygen saturation. In summary, while all these actions are important in caring for a client with pneumonia, the nurse must prioritize interventions based on their urgency and potential impact on the client’s health status. In this case, notifying the health care provider of the client’s condition is the most critical action.
Correct Answer is C
Explanation
The correct answer is choice C: Increase rate of ventilation.
Choice A rationale:
Decreasing expiratory flow time would not directly address the elevated PaCO2 levels. This intervention is more related to managing expiratory phase issues rather than correcting respiratory acidosis.
Choice B rationale:
Decreasing expiratory pressure might help with certain ventilation issues, but it does not specifically target the elevated PaCO2 and resulting acidosis.
Choice C rationale:
Increasing the rate of ventilation helps to blow off more CO2, thereby reducing PaCO2 levels and correcting the respiratory acidosis indicated by the pH of 7.26 and PaCO2 of 68 mm Hg.
Choice D rationale:
Increasing the ventilator tidal volume could also help reduce PaCO2 by increasing the amount of air exchanged with each breath. However, increasing the rate of ventilation is generally a more immediate and effective intervention for acute respiratory acidosis.
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