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[The prognosis of the efficacy of extracorporeal shockwave lithotripsy of the kidneys and ureters].

A retrospective analysis of the data on 300 patients revealed a relationship between basic clinical and history evidence, location of the concrement and efficacy of a single lithotripsy. The author presents factors influencing concrement disintegration. Basing on the relations between efficacy of lithotripsy and clinical signs three-score system for estimation of each sign is proposed. The highest effect of the concrement fragmentation occurred within 10 scores (in 97.1% of the patients). The score above 16 is indicative of lowering efficacy of lithotripsy. This system of calculation is efficient in prognostication of efficacy of extracorporeal impulse lithotripsy of the kidneys and ureters.