title: High fluid-low calcium intake: not all renal stone formers adhere to this simple treatment.
abstract: FActors predisposing to renal stone formation have been studied in 309 patients. Dehydration before diagnosis of urolithiasis was due in 12% of the cases to frequent diarrhea and in 36% to bad working conditions. Daily fluid intake was less than 1 liter in 25% of the patients before stone formation and was persistently low in 11% after stone discovery. 41% of the patients drank irregularly over the day, before stone formation, and 11% continued to do so after its detection. Immobilization was present in the patient's history in over 20% of the cases. Normocalcemic hypercalciuria was found in 26% of the patients. 24% of the patients drank water with a calcium concentration of 100--500 mg/l before the lithiasis was diagnosed; 21% continued to do so after stone discovery or paradoxically even drank harder water than before stone detection.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002118:Calcium / Q000652:urine; D002136:Calcium, Dietary / Q000627:therapeutic use; D003681:Dehydration / Q000209:etiology; D003967:Diarrhea / Q000150:complications; D005260:Female; D005440:Fluid Therapy; D006801:Humans; D007103:Immobilization; D007669:Kidney Calculi / Q000178:diet therapy / Q000209:etiology* / Q000652:urine; D008297:Male; D008875:Middle Aged; D013696:Temperature
chemical_list: D002136:Calcium, Dietary; D002118:Calcium