Objective: To assess the effect of the gravity related radiographic features on the success rate of ESWL in patients with renal pelvis stones.

Material and Methods: Total of 79 patients (mean age: 47.34+12.9 year) who underwent ESWL due to renal pelvis stones (mean area:162.58+130.31mm²) between 2005-2008 were enrolled. Three  angles on the pretreatment excretory urography were measured; the inner angle between the axis of the lower pole infundibular and ureteropelvic axis (angle 1), lower pole infundibular axis and main axis of pelvis-U-P junction point (angle 2) and, lower pole  infundibular axis and perpendicular line (angle 3). Ages, sessions number, stones burden, numbers of shock waves and presence of hydronephrosis were defined for all patients. The significant predictors of stone free rate after the application of ESWL were defined.

Results: The success rate was %53.2. All angles, sessions number, stones burden and total shock waves number were found to be  a significant predictors of stone free rate. However sex, age and the presences of hydronephrosis did not show similar effects. The cut off values for the statistically significant factors of success were determined.

Conclusions: Gravity related factors have significant role in determining the stone –free rate following satisfactory fragmentation of renal pelvis stones with ESWL. Using these radiographic parameters, ESWL can be selected as a treatment modality for a predictably favorable out comes in individual cases.

Conference Title

Istanbul Urolitiyasiz Günleri, oral presentation, Congress abstract book, İstanbul. 11-12 December,2009.

Conference Country

Palestine

Conference Date

Jan. 1, 2009 - Jan. 1, 2009

Conference Sponsor

Turkish association of urology