Comparison of stone-free rates after ureteroscopic pneumatic lithotripsy in impacted vs non-impacted upper ureteral stones

Document Type : Original Article


1 Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran

2 Departemnt of Urology, AJA University of Medical Sciences, Tehran, Iran



Introduction: Stone impaction in ureteral is defined as an unchanged stone location for at least 2 months or an inability to pass guidewire up to the stone intraoperatively. The aim of this study is evaluating the effect of stone impaction on pneumatic transurethral lithotripsy in upper ureteral stones. And to assess if stone impaction could be a factor that prevents retropulsion of upper ureteral stones
Methods: In this retrospective cohort study, patients referred with upper ureteral stone to the urology clinic of Sina hospital between May 2014 to May 2018 were evaluated. The patients were divided into two groups: those with stone impaction (group A) and without impaction of stone (group B). Transurethral lithotripsy (TUL) procedure with pneumatic lithotripter was performed in all patients. The data were extracted from patients’ documents and files retrospectively and analyzed. Quantitate data were shown by the number (%) and they compared by chi-square test. The values of p < /p>