Parathyroid Disorders and Calcium Balance · NCLEX Exam

In Secondary hyperparathyroidism, which of the following is often the underlying cause?

  1. Hypercalcemia caused by a parathyroid adenoma
  2. Chronic kidney disease with low vitamin D and hypocalcemia
  3. Excessive vitamin D intake raising serum calcium
  4. A primary parathyroid carcinoma secreting PTH
Show answer and explanation

Correct answer: Chronic kidney disease with low vitamin D and hypocalcemia

Secondary hyperparathyroidism is a reactive over-secretion of PTH due to low serum calcium, often from chronic kidney disease and/or vitamin D deficiency.

Difficulty: Medium Question 13 of 19

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