Which of the following causes a decrease in renal $\mathrm{Ca}^{2+}$ clearance?

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[Table 5.11]. Thiazide diuretics have a unique effect on the distal tubule; they increase $\mathrm{Ca}^{2+}$ reabsorption, thereby decreasing $\mathrm{Ca}^{2+}$ excretion and clearance. Because parathyroid hormone (PTH) increases $\mathrm{Ca}^{2+}$ reabsorption, the lack of PTH will cause an increase in $\mathrm{Ca}^{2+}$ clearance. Furosemide inhibits $\mathrm{Na}^{+}$reabsorption in the thick ascending limb, and extracellular fluid (ECF) volume expansion inhibits $\mathrm{Na}^{+}$reabsorption in the proximal tubule. At these sites, $\mathrm{Ca}^{2+}$ reabsorption is linked to $\mathrm{Na}^{+}$reabsorption, and $\mathrm{Ca}^{2+}$ clearance would be increased. Because $\mathrm{Mg}^{2+}$ competes with $\mathrm{Ca}^{2+}$ for reabsorption in the thick ascending limb, hypermagnesemia will cause increased $\mathrm{Ca}^{2+}$ clearance.

Which of the Following Causes a Decrease in Renal Ca2+\mathrm{Ca}^{2+}Ca2+ Clearance? A) Hypoparathyroidism B) Treatment with Chlorothiazide C) Treatment with Clearance

Which of the Following Causes a Decrease in Renal $\mathrm{Ca}^{2+}$ Clearance?
A) Hypoparathyroidism
B) Treatment with Chlorothiazide
C) Treatment with Clearance