Adequacy of a single stone risk analysis in the medical evaluation of urolithiasis.
Adequacy of a single stone risk analysis in the medical evaluation of urolithiasis.
复制标题
单一结石风险分析在尿石症医学评估中的充分性。
DOI:
10.1097/00005392-200102000-00006
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
Poindexter,JR
中科院分区:
文献类型:
--
作者:
Pak,CY;Peterson,R;Poindexter,JR
PurposeWe tested the hypothesis that a single 24-hour urine sample for stone risk analysis would be sufficient for the simplified medical evaluation of urolithiasis.Materials and MethodsWe retrospectively analyzed stone risk profile data on 24-hour urine samples obtained during random and restricted diets in 225 patients with recurrent urolithiasis.ResultsIn 2 random samples we noted no significant difference in urinary calcium, oxalate, uric acid, citrate, pH, total volume, sodium, potassium, sulfate or phosphorus. For these risk factors there was a highly significant positive correlation in the 2 random samples (r ≥0.68, p <0.0003) and the value of each was abnormal or normal in at least 81% of patients. Urinary magnesium and ammonium were significantly lower in random sample 2 than 1, the former by 4%. After calcium, sodium and oxalate dietary restriction mean urinary calcium and sodium plus or minus standard deviation decreased significantly by 25% from 251 ± 125 to 187 ± 98 mg. daily and by 38% from 183 ± 87 to 113 ± 57 mEq. daily, respectively. Other risk factors had a slight or no significant change. Correcting random urinary calcium for the excessive urinary excretion of sodium brought urinary calcium to 210 ± 108 mg. daily, similar to the value on the restricted diet.ConclusionsThe reproducibility of urinary stone risk factors is satisfactory in repeat urine samples. A single stone risk analysis is sufficient for the simplified medical evaluation of urolithiasis.