Objective:To explore the predictive value of uretheral wall thickness for stone-free rate after extracorporeal shockwave lithotripsy(ESWL).Methods: Patients who diagnosed as uretheral calculi and treated with ESWL from January 2018 to December 2019 in our hospital were selected as the research subjects. According to the stone-free rate after ESWL, they were divided into stone clearance group and stone remains group. To compare between the preoperative clinical data and postoperative complications of the two groups, the clinical predictors of stone-free rate was assessed using multivariate analyses. ROC curve was used to evaluate the accuracy and cutoff value.Results:Among the 151 patients, 113 (74.83%) excluded their stones after ESWL. There was no significant difference in gender, body mass index (BMI), stone size and location between the two groups, but there was a significant difference in age, visual analog score (VAS), stone course, stone CT value and UWT (P<0.05). Multivariate analysis showed that stone CT value and UWT could be used as independent predictors of ESWL. ROC analysis showed that 3.05 mm was the optimal cut-off value for UWT, with a predictive accuracy of 0.918. In addition, low UWT had a significantly lower non-anticipated emergency surgery rate than high UWT (P<0.05).Conclusion:Stone CT value and UWT are independent predictors of stone clearance rate after ESWL. UWT has a better predictive value for ESWL.
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