Modification of estimation of the urinary ion-activity products of calcium oxalate and calcium phosphate.
نویسنده
چکیده
Tiselius proposed simplified estimates of the ion-activity products of calcium oxalate, calcium phosphate, and brushite as the AP(CaOx) index, the AP(CaP) index, and the AP(Bru) index, respectively, which allowed assessment of the urinary saturation levels of these lithogenic substances. A number of urinary variables (calcium, magnesium, oxalate, phosphate, citrate, urine volume, and pH) are necessary to derive these indices. In addition, these three indices have correction factors corresponding to the urinary collection periods, although these periods were originally quite limited. In this study, the factors were shown to vary as a function of time. Therefore, they were incorporated into these indices after proper calculation so as to be usable for any collection period less than 24 hours. This means that the factors will now prove more useful in evaluating the urinary saturation levels after short-term collections.
منابع مشابه
Title Modification of estimation of the urinary ion-activity products of calcium oxalate and calcium phosphate
متن کامل
Circadian rhythms of urinary saturation levels of calcium oxalate and calcium phosphate in normal male individuals.
The circadian rhythms of the calcium oxalate, calcium phosphate, and brushite saturation levels as estimated by the AP(CaOx), AP(CaP), and AP(Bru) indices (Tiselius), respectively, were studied in 5 healthy males on three different occasions. These indices were calculated from the data of urinary specimens collected in 2.5-hour fractions except during sleep. The calcium oxalate and brushite sat...
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ورودعنوان ژورنال:
- Hinyokika kiyo. Acta urologica Japonica
دوره 39 5 شماره
صفحات -
تاریخ انتشار 1993