Shock Wave Lithotripsy in Ureteral Stones: Evaluation of Patient and Stone Related Predictive Factors

Bibliographic Details
Title: Shock Wave Lithotripsy in Ureteral Stones: Evaluation of Patient and Stone Related Predictive Factors
Authors: Yazici, Ozgur, Tuncer, Murat, Sahin, Cahit, Demirkol, Mehmet K., Kafkasli, Alper, Sarica, Kemal
Source: International braz j urol. August 2015 41(4)
Publisher Information: Sociedade Brasileira de Urologia, 2015.
Publication Year: 2015
Subject Terms: Ureteral Calculi, Lithotripsy, Body Mass Index
More Details: urpose:To evaluate the patient and stone related factors which may influence the final outcome of SWL in the management of ureteral stones.Materials and Methods:Between October 2011 and October 2013, a total of 204 adult patients undergoing SWL for single ureteral stone sizing 5 to 15 mm were included into the study program. The impact of both patient (age, sex, BMI,) and stone related factors (laterality, location, longest diameter and density as CT HU) along with BUN and lastly SSD (skin to stone distance) on fragmentation were analysed by univariate and multivariate analyses. Results: Stone free rates for proximal and distal ureteral stones were 68.8% and 72.7%, respectively with no statistically significant difference between two groups (p=0.7). According to univariate and multivariate analyses, while higher BMI (mean: 26.8 and 28.1, p=0.048) and stone density values (mean: 702 HU and 930 HU, p<0.0001) were detected as statistically significant independent predictors of treatment failure for proximal ureteral stones, the only statistically significant predicting parameter for the success rates of SWL in distal ureteral stones was the higher SSD value (median: 114 and 90, p=0.012).Conclusions:Our findings have clearly shown that while higher BMI and increased stone attenuation values detected by NCCT were significant factors influencing the final outcome of SWL treatment in proximal ureteral stones; opposite to the literature, high SSD was the only independent predictor of success for the SWL treatment of distal ureteral stones.
Document Type: article
File Description: text/html
Language: English
ISSN: 1677-5538
DOI: 10.1590/S1677-5538.IBJU.2014.0330
Access URL: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-55382015000400676
Rights: info:eu-repo/semantics/openAccess
Accession Number: edssci.S1677.55382015000400676
Database: SciELO
More Details
ISSN:16775538
DOI:10.1590/S1677-5538.IBJU.2014.0330
Published in:International braz j urol
Language:English