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  • Title: [Comparison of calcium oxalate values as indicators of risk for calcium oxalate calcinosis and the degree of urine saturation in patients with calcium urolithiasis and in healthy patients].
    Author: Głuszek J, Boruczkowska A, Kosicka T, Raszeja-Wanic B.
    Journal: Pol Tyg Lek; 1989 Feb 27; 44(9):220-2. PubMed ID: 2813183.
    Abstract:
    Daily excretion of calcium, magnesium, oxalates, and citrates together with daily urine output were determined in 37 patients with calcium urolithiasis and in 25 healthy individuals. Basing on the obtained values, a degree of urine saturation with calcium oxalate with Marshall and Robertson technique and a value of risk factor with Tiselius technique were calculated. It was found that daily diuresis and excretion of calcium with the urine are significantly higher in patients with urolithiasis where as daily excretion of citrates with the urine is significantly lower than in healthy individuals. Risk index proved two-fold higher in the examined patients than in the healthy individuals (p greater than 0.001) while the degree of urine saturation with calcium oxalate did not differ significantly in both groups. The authors, discussing causes of seemingly different changes in both tested parameters, stressed diagnostic value of risk index which includes excretion of crystallization inhibitors (magnesium, citrates) and contrary to the degree of urine saturation is independent of daily urine output.
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