Clinical comparison on nexible ureteroscope one-step treat and step-by-step treat for impacted upper ureteric calculi

Abstract

Objective \nTo evaluate the effect on nexible ureteroscope one-step treat and step-by-step treat for impacted upper ureteral calculi. \n \n \nMethods \nThe clinical data of 98 cases of impacted upper ureteral calculi were retrospectivelv analvzed between January 2016 and January 2018. The one-step nexible ureteroscopic lithotripsy was used in 48 cases (observation group), and the step-by-step nexible ureteroscopic lithotripsy was used in 50 cases (control group). During the one-step nexible ureteroscopic lithotripsy, only flexible ureteroscope was used to crush the stone, no matter whether the stone located in the ureter or returned to the renal pelvis. During step-by-step nexible ureteroscopic lithotripsy, the rigid ureteroscopy was firstly used for crushing the stone in the ureter. When the stone returned to the renal pelvis, the rigid ureteroscopy was changed into nexible uretemscope for continuous crushing the stone. Operating time, 2 weeks stone clearance rate and the cases of fever after operation were compared between two groups. \n \n \nResults \nCompared with that of the control group, the operation time of the observation group was significantly shortened [(38.3 ± 10.5) min vs. (55.1 ± 12.7) min, t = - 6.415], and the proportion of postoperative body temperature ≥ 38.5 ℃ was also reduced [(4.2% (2/48) vs. 22.0% (11/50), χ2=5.276]. The differences between the two groups were statistically significant (P 0.05). \n \n \nConclusions \nFlexible ureteroscope one-step method is a safe and effective alternation for incarcerated upper ureteral calculi. \n \n \nKey words: \nUreteral calculi;\xa0Lithotripsy, laser;\xa0Ureteroscopy;\xa0Comparative study