[Non-medicamentous prevention of calcium oxalate urinary calculi]

In a prospective study the efficacy and actual outcome of non-medicamentous preventive measures with metabolically unremarkable calcium-oxalate urolithiasis were investigated in 49 idiopathic calcium-oxalate stone formers. Overnight urine excretion was not increased. The mean concentration and excretion of essential parameters in terms of lithogenesis were hardly influenced. The obvious reduction of the pelvi-calyceal area in both lithogenous and non-lithogenous kidneys after one year of calculus prophylaxis was striking. By means of a discriminant function including morphological parameters and high-molecular urine components some developments may be verified in the discriminant space suggesting a good prophylactic result in many patients.