title: [The effect of the physicochemical structural properties of urinary calculi on the results of extracorporeal shockwave lithotripsy].
abstract: The relation of chemical composition and structure of uroliths to lithotripsy effects was evaluated with regard to the concrement size, location, time of the intraureteral persistence, etc. Besides, a prognosis of the remote impulse lithotripsy (RIL) outcome was attempted by x-ray picture and crystallization alterations in the urine. 54 patients with nephroliths and 73 patients with ureteroliths (overall 137 concrements) were examined. By RIL results, the patients were divided into 2 groups: those who benefited from RIL and those who failed it. Worse results were obtained in cases of oxalate concrements with radial-concentric structure and with phosphate ones composed primarily of hydroxylapathite. RIL efficacy was found to depend on a number of interrelated factors (chemical structure, location, size of the concrement, duration of its existence in the ureter). In long-standing ureteroliths the outcomes are associated with stone structure. The denser is the concrement the more probable is its strangulation and more apparent is periureteritis. Changes in crystallization can prompt RIL prognosis as well as it is possible by x-ray picture.
authors.forename: V N
authors.initials: VN
authors.lastname: Stepanov
authors.forename: V M
authors.initials: VM
authors.lastname: Perel'man
authors.forename: V G
authors.initials: VG
authors.lastname: Istratov
authors.forename: Z A
authors.initials: ZA
authors.lastname: Kadyrov
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002852:Chromatography, Ion Exchange; D005069:Evaluation Studies as Topic; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008096:Lithotripsy / Q000295:instrumentation; D008297:Male; D008875:Middle Aged; D013054:Spectrophotometry, Atomic; D014131:Trace Elements / Q000652:urine; D014545:Urinary Calculi / Q000737:chemistry* / Q000628:therapy* / Q000652:urine
chemical_list: D014131:Trace Elements
vernacular_title: Vliianie fiziko-khimicheskikh svoĭstv struktury mochevykh kamneĭ na rezul'taty distantsionnoĭ udarnovolnovoĭ litotripsii.