What are the fluid intake recommendations for the treatment of hypercalciuria?

Updated: Jun 02, 2021
  • Author: Stephen W Leslie, MD, FACS; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Several studies have shown that on average, stone formers have a lower overall fluid intake than do non–stone formers. Not surprisingly, the highest incidence of kidney stone formation was in the group with the lowest overall fluid intake.

The need for a high fluid intake to increase urinary fluid volume seems obvious, because extra water decreases urinary concentration and reduces the likelihood of stones, even if the total calcium excretion is unchanged. The amount of extra water to be consumed is variable. In general, the author suggests an amount of water that produces a 24-hour urinary volume of 2000 mL or more. This amount may need to be increased in selected cases.

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