2019 Volume 32 Issue 1 Pages 111-115
Purpose : To elucidate the association between the operative time and stone volume using different access sheath diameters during ureteroscopic lithotripsy.
Method : A total of 43 patients who underwent ureteroscopic lithotripsy from October 2014 to September 2017 for upper urinary stones were retrospectively analyzed regarding their operative time, stone volume, ureteral access sheath diameter, and complications.
Results : Operative times were 45-350 minutes. Stone volumes calculated from the three dimensional stone diameter by CT were 45-1440 mm3. Stone residue were not present in any cases. Linear regression analysis revealed that there were no significant differences in operative time according to differences in the access sheath diameter.
Conclusions : There were no significant differences in the operative time according to differences in the access sheath diameter.