Stone-forming properties and epytaxy of urine
The purpose of research was studying of urine epitaxy. A study of 254 patients cases based on investigation of physicochemical parameters of 24-hour urine. Source data for the calculation of equilibrium composition and performance of saturation: pH, NH4, SO4, Mg, Ox (oxalate), Cit (citrate), P (phosphate), Ca, Cl, Na, k, HUR (uric acid), SO2. Calculation of degree of saturation (SN) urine main stone-forming compounds, the sequence of deposition and determination of seed crystallization compound made on the original program of calculating equilibrium of two-phase multicomponent systems and mathematical model of urine developed on department of urology of Military-medical academy named after S.M. Kirov, based on the biochemical composition of 24-hour urine. As a result of research it was proved, that among different stone-forming compounds phosphates are the most practicable to form stone nucleus. Its next growth is possible due to urine supersaturation by calcium oxalate, hydroxyapatite and ammonium urаte.