title: [Determining factors of effectiveness of extracorporeal shock wave lithotripsy in ureteral stones: results of own investigation].
abstract: The purpose of the present study is to investigate main determining factors of effectiveness of extracorporeal shock wave lithotripsy (ESWL) in urethral stones and the influence of these factors on the number of necessary sessions of ESWL procedure. The problem presents a special interest for insurance medicine, as the number of sessions has a direct impact on the cost and length of treatment. The present investigation included 162 patients with urolithiasis having stones in urethra. To find out determining factors of effectiveness of ESWL in urethral stones the following factors were considered: size, localization, radioopacity of stone, its duration of stay in urethra, the degree of dilation of upper urinary tract. The influence of mentioned factors on the number of necessary ESWL sessions was investigated. On the basis of the present study a conclusion can be made that the principal factors determining the clinical efficacy of ESWL in urethral stones are the stone size, condition of upper urinary tract and radioopacity of stone. The level of localization of the stone in urethra has no influence on ESWL efficacy. Therefore in case of large size stones, their long stay in urethra and significant disorders of urodynamics in upper urinary tract, in marked radioopacity of stones more than one session of ESWL is required. In such cases, we recommend to consider other less invasive methods of treatment of urethral stones (ureterorenoscopy or percutaneous urethra lithotripsy).
authors.forename: M V
authors.initials: MV
authors.lastname: Manukian
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007348:Insurance, Health; D008096:Lithotripsy; D008297:Male; D016896:Treatment Outcome; D053039:Ureterolithiasis / Q000628:therapy*