Fluid intake and epidemiology of urolithiasis


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Abstract

A low urine volume is an important risk factor in urinary stone formation. The present article summarizes available data from epidemiological and clinical studies to elucidate the impact of fluid intake and urine volume on the risk of urinary stone formation and the prevention of stone recurrence. A review of the literature shows that an increased urine volume achieved by a high fluid intake exerts an efficacious preventive effect on the onset and recurrence of urinary stones. A high water intake and urine dilution results in a marked reduction in saturation of lithogenous salts. The type of fluids should be carefully selected to achieve the appropriate change of urine composition depending on stone composition. A sufficient intake of fluid is one of the most important preventive measures for stone recurrence.

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