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Renal stone disease: Causes, evaluation and medical treatment Heilberg IP; Schor NArq Bras Endocrinol Metabol 2006[Aug]; 50 (4): 823-31The purpose of the present review is to provide an update about the most common risk factors or medical conditions associated with renal stone formation, the current methods available for metabolic investigation, dietary recommendations and medical treatment. Laboratory investigation of hypercalciuria, hyperuricosuria, hyperoxaluria, cystinuria, hypocitraturia, renal tubular acidosis, urinary tract infection and reduction of urinary volume is based on the results of 24-hr urine collection and a spot urine for urinary sediment, culture and pH. Blood analysis for creatinine, calcium and uric acid must be obtained. Bone mineral density has to be determined mainly among hypercalciurics and primary hyperparathyroidism has to be ruled out. Current knowledge does not support calcium restriction recommendation because it can lead to secondary hyperoxaluria and bone demineralization. Reduction of animal protein and salt intake, higher fluid intake and potassium consumption should be implemented. Medical treatments involve the use of thiazides, allopurinol, potassium citrate or other drugs according to the metabolic disturbances. The correction of those metabolic abnormalities is the basic tool for prevention or reduction of recurrent stone formation.|Calcium Oxalate/analysis[MESH]|Calcium/urine[MESH]|Diet[MESH]|Humans[MESH]|Hydrogen-Ion Concentration[MESH]|Hypercalciuria/diagnosis[MESH]|Kidney Calculi/*etiology/metabolism/therapy[MESH]|Risk Factors[MESH] |
