A nurse is collecting data on a patient who is experiencing oxygen toxicity.
What symptoms should the nurse anticipate?
Muscle twitching
Redness of the face
Swelling around the eyes
A metallic taste in the mouth
The Correct Answer is A
Choice A rationale:
Muscle twitching is a symptom of oxygen toxicity. Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen (O2) at increased partial pressures. Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and eyes. Central nervous system symptoms can include muscle twitching.

Choice B rationale:
Redness of the face is not typically associated with oxygen toxicity. Oxygen toxicity primarily affects the central nervous system, lungs, and eyes. It does not typically cause redness of the face.
Choice C rationale:
Swelling around the eyes is not a common symptom of oxygen toxicity. The primary effects of oxygen toxicity are seen in the central nervous system, lungs, and eyes. However, this does not typically manifest as swelling around the eyes.
Choice D rationale:
A metallic taste in the mouth is not a known symptom of oxygen toxicity. Oxygen toxicity is a condition that results from the harmful effects of breathing molecular oxygen (O2) at increased partial pressures. It primarily affects the central nervous system, lungs, and eyes, but a metallic taste in the mouth is not a recognized symptom.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
A respiratory rate of 28/min is not an indication that the intervention was effective. A normal respiratory rate for an adult at rest is between 12 and 20 breaths per minute. A respiratory rate of 28/min is considered tachypnea, which could be a sign of respiratory distress, not an improvement.
Choice B rationale:
Pink mucous membranes are a good sign. They indicate effective oxygenation and perfusion. When the body is receiving an adequate amount of oxygen, the skin, lips, and mucous membranes can appear pink. This is a positive outcome of oxygen therapy for hypoxia.
Choice C rationale:
A heart rate of 110/min is not an indication that the intervention was effective. A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate of 110/min is considered tachycardia, which could be a sign of distress or compensation for hypoxia, not an improvement.
Choice D rationale:
Restlessness is not an indication that the intervention was effective. On the contrary, restlessness can be a sign of inadequate oxygenation. When the brain does not receive enough oxygen, a patient can become restless or anxious. Therefore, restlessness is not a positive outcome of oxygen therapy for hypoxia.
Correct Answer is C
Explanation
Choice A rationale:
Hypertension is not typically a sign of hypokalemia. Hypokalemia, or low potassium levels, can cause symptoms like fatigue, muscle weakness, digestive problems, and frequent urination. Hypertension, or high blood pressure, is not commonly associated with hypokalemia.
Choice B rationale:
Cerebral edema, or swelling in the brain, is not a common symptom of hypokalemia. Hypokalemia is more likely to cause symptoms related to muscle function and digestion, as potassium is an essential mineral that helps regulate muscle contractions, maintain healthy nerve function, and regulate fluid balance.
Choice C rationale:
Muscle weakness is a common symptom of hypokalemia. Potassium helps regulate muscle contractions. When blood potassium levels are low, your muscles produce weaker contractions. This can result in symptoms like muscle weakness and fatigue.
Choice D rationale:
Hyperactive bowel sounds are not typically associated with hypokalemia. Hypokalemia can cause digestive problems, but these are more likely to be issues like constipation rather than increased bowel sounds.
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