A nurse is caring for a child who is receiving oxygen. Which of the following findings indicates oxygen toxicity?
Hyperventilation
Increased blood pressure
Decreased PaCO2
Unconsciousness
The Correct Answer is D
Choice A reason: Hyperventilation can be a sign of oxygen toxicity as the body attempts to balance oxygen and carbon dioxide levels.
Choice B reason: Increased blood pressure is not typically a direct sign of oxygen toxicity; it may be related to other underlying conditions.
Choice C reason: Decreased PaCO2 can be a result of hyperventilation, which is a compensatory mechanism in response to oxygen toxicity.
Choice D reason: Unconsciousness can be a severe sign of oxygen toxicity, indicating a high level of oxygen in the blood affecting brain function.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Hypoventilation is a late sign of hypoxemia and is characterized by an abnormally slow breathing rate, reducing oxygen intake and increasing carbon dioxide in the blood.
Choice B reason: Tachypnea, or rapid breathing, is an early sign of hypoxemia as the body attempts to increase oxygen levels by breathing more quickly.
Choice C reason: A nonproductive cough is not directly related to hypoxemia, which is a deficiency in the amount of oxygen reaching the tissues.
Choice D reason: Nasal stuffiness is not a specific indicator of hypoxemia and can be associated with various conditions.
Correct Answer is B
Explanation
Choice A reason: Bed rest is not a specific treatment for Hirschsprung's disease. While rest may be part of preoperative care, it does not address the underlying issue of the disease⁹.
Choice B reason: Surgery is the definitive treatment for Hirschsprung's disease. The pull-through procedure is commonly used to remove the affected section of the colon and connect the healthy part to the anus⁷.
Choice C reason: An NG tube may be used for decompression if there is a bowel obstruction, but it is not a treatment for Hirschsprung's disease itself. Surgery is required to correct the absence of nerve cells in the colon⁹.
Choice D reason: A high-fiber diet is not recommended before surgery as it may increase the risk of enterocolitis and bowel obstruction in patients with Hirschsprung's disease⁹.
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