Ocena ciężaru właściwego moczu pacjentów z kamicą dróg moczowych*

© Borgis - Medycyna Rodzinna 2/2014, s. 39-41

Agnieszka Majda, Dariusz Moczulski

Summary
Introduction. Frequency of nephrolithiasis is about 10-12% in men and about 5% in the women. Most often stones are formed by calcium compounds (oxalate and phosphate). In each type of nephrolithiasis it is recommended to enlarge fluids intake, which directly results in the lower level of urine specific gravity. USG of each urine sample in nephrolithiasis patients should be under 1.015 g/ml.
Aim. The aim of this study was to evaluate the urine specific gravity in nephrolithiasis patients.
Material and methods. The research group was composed of 20 adult patients with nephrolithiasis compared with twenty persons without nephrolithiasis. Urine specific gravity of all patients was measured for three consecutive days in pattern: each of the morning sample and each of the urine sample passed between 5-9 pm. USG was measured by means of a clinical refractometer PAL-10S ATAGO.
Results. Urine specific gravity in nephrolithiasis patients below 1.015 g/ml was 35% among morning urine samples and 15% among afternoon samples and in non-nephrolithiasis: 20 and 10% respectively. Patients with nephrolithiasis had relatively lower USG than non-nephrolithiasis (the average of three days, p = 0.031).
Conclusions. In comparison with non-nephrolithiasis patients, relatively lower urine specific gravity is observed in patients with nephrolithiasis – especially in morning urine sample. We should pay special attention to more effective prevention of forming stones. Furthermore, it will be desirable to enforce our recommendations fully.

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