NCLEX-RN Exam Practice

Category - Substance Abuse

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You are caring for a patient with a phosphorus level of 2.0 mg/dL. What condition would cause a patient's phosphorus level to be so low?

Alcoholism
Hypoparathyroidism
Tumor lysis syndrome
Renal insufficiency

Explanation

Answer: A - Alcoholism is most likely to cause 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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