A nurse is reviewing the laboratory results of a client who takes furosemide. Which of the following results should the nurse identify as the priority finding?
Phosphorus 4.5 mEq/L.
Potassium 2.9 mEq/L.
Calcium 8.2 mg/dL.
Sodium 145 mEq/L.
The Correct Answer is B
Choice A rationale:
A phosphorus level of 4.5 mEq/L falls within the normal range, which is typically between 2.5 to 4.5 mEq/L. Although it's essential to monitor phosphorus levels, it is not the priority finding in this scenario.
Choice B rationale:
A potassium level of 2.9 mEq/L is the priority finding. The normal range for potassium is typically between 3.5 to 5.0 mEq/L. A potassium level of 2.9 mEq/L indicates severe hypokalemia, which can lead to life-threatening cardiac arrhythmias and muscle weakness. Immediate intervention is necessary to address the potassium imbalance.
Choice C rationale:
A calcium level of 8.2 mg/dL falls within the normal range (typically 8.5 to 10.2 mg/dL). While calcium levels are essential to monitor, they do not take precedence over the critically low potassium level in this situation.
Choice D rationale:
A sodium level of 145 mEq/L falls within the normal range, which is usually around 135 to 145 mEq/L. Although monitoring sodium levels is important, it is not the priority finding when compared to the critically low potassium level.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Narcotics are not known to directly cause hypokalemia. Their main effects are related to pain relief and central nervous system depression.
Choice B rationale:
Thiazide diuretics can cause potassium loss in the urine, leading to hypokalemia. These diuretics work by inhibiting sodium reabsorption in the distal convoluted tubule, which can lead to potassium excretion as well.
Choice C rationale:
Corticosteroids can cause sodium and water retention but are not typically associated with significant potassium abnormalities.
Choice D rationale:
Muscle relaxers are not known to cause hypokalemia. They primarily act on the neuromuscular junction and do not directly impact potassium levels.
Correct Answer is {"dropdown-group-1":"C"}
Explanation
Choice A rationale:
Target conditions are not mentioned in the sentence, and there is no context to suggest their relevance to the client's situation.
Choice B rationale:
Hyperactive reflexes are not commonly associated with a urinary tract infection or the prescribed medications.
Choice C rationale:
The client with a urinary tract infection and the medications mentioned (Furosemide and Trimethoprim/sulfamethoxazole) are at an increased risk of hypokalemia (low potassium levels) due to Furosemide's diuretic effect, fluid volume deficit (dehydration) from the infection, and hypertension (high blood pressure) as a potential side effect of Trimethoprim/sulfamethoxazole.
Choice D rationale:
Urinary retention is not expected in a client with a urinary tract infection; it is more commonly associated with urinary obstruction or other urinary conditions unrelated to an infection.
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