A patient develops hyperparathyroidism related to a benign tumor. What laboratory result should the nurse expect to see?
a. Decreased serum potassium
b. Elevated serum potassium
c. Decreased serum calcium
d. Elevated serum calcium
ANS: D
Overactivity of one or more of the parathyroid glands causes an increase in parathyroid hormone (PTH), with a subsequent increase in the serum calcium level (hypercalcemia). This is achieved through movement of calcium out of the bones and into the blood, absorption in the small intestine, and reabsorption by the kidneys. Potassium level is not affected.
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