Isotonic saline in hypercalcemia.

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Prepare for the Mark Klimek Electrolytes and Endocrine Test. Utilize flashcards, multiple choice questions, and detailed explanations for each query to enhance your understanding. Ace your exam!

Multiple Choice

Isotonic saline in hypercalcemia.

Explanation:
In hypercalcemia, restoring intravascular volume with isotonic saline boosts kidney perfusion and glomerular filtration rate, which increases calcium filtration and its excretion in urine. This calciuresis lowers the serum calcium level. It doesn’t raise calcium reabsorption (that would worsen hypercalcemia), nor does it decrease blood volume (it actually increases it), and it doesn’t directly inhibit PTH.

In hypercalcemia, restoring intravascular volume with isotonic saline boosts kidney perfusion and glomerular filtration rate, which increases calcium filtration and its excretion in urine. This calciuresis lowers the serum calcium level. It doesn’t raise calcium reabsorption (that would worsen hypercalcemia), nor does it decrease blood volume (it actually increases it), and it doesn’t directly inhibit PTH.

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