The nurse is reviewing lab results of a 43-year-old with hyperparathyroidism. Which of the following abnormalities would the nurse expect?


• Excess parathyroid hormone secretion results in hypercalcemia by removing calcium from the bone.

• The most common clinical presentation is asymptomatic hypercalcemia.

• Hyperparathyroidism results from oversecretion due to a parathyroid tumor (primary hyperparathyroidism) or in response to hypocalcemia (secondary hyperparathyroidism).

• Hyperparathyroidism causes an increase in phosphate excretion, leading to hyperphosphaturia.

• Hypophosphatemia results from increased phosphate excretion, but is usually on the lower end of normal, occurring in less than half of all cases.

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