Practice Quiz

CEN Practice Exam (Certified Emergency Nurse)

Category - Substance Abuse

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You are caring for a patient with a phosphorus level of 2.0 mg/dL. What condition do you know would cause the phosphorus level to be so low?
  1. Alcoholism
  2. Hypoparathyroidism
  3. Tumor lysis syndrome
  4. Renal insufficiency
Explanation
Answer: A - Of the above listed conditions, the patient with alcoholism would be most likely to have a phosphorus level of 2.0 mg/dL. A normal phosphorus level is 2.7 to 4.5 mg/dL. Malnutrition or starvation and the use of aluminum hydroxide-based antacids can also be causes of low phosphorus levels. The other three conditions are more likely to cause hyperphosphatemia.
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