Clinical effectiveness of modified single pigtail fishtail stent on preoperative stenting and postoperative stenting during flexible ureteroscopic lithotripsy

Abstract

Abstract In order to evaluated the clinical effectiveness of modified single pigtail fishtail stent(MSPF) on preoperative stenting and postoperative stenting during flexible ureteroscopic lithotripsy (FURS), a total of 160 patients who underwent ureteral stent placement before and after FURS for unilateral symptomatic ureteral or renal stones were randomized prospectively into two groups. There were 79 patients used modified single pigtail fishtail stent (MSPF group), and 81 patients used double pigtail ureteral stent (DPUS group) . The questionnaires were conducted on the day of 2 weeks after preoperative stenting（T1）and 2 weeks after postoperative stenting（T2）and 4 weeks after stent removal (T3). All 160 patients completed the study. Compared with the DPUS group, the urinary tract symptoms and somatic pain symptoms of the MSPF group were significantly lower than those of the DPUS group in T1 (25.0vs.31.1, P<0.001 and 16.7vs.17.8, P= 0.042) and T2(23.8vs.31.2, P<0.001 and 16.8vs.18.5, P<0.001). The results showed that, compared with conventional double pigtail ureteral stent, the using of MSPF during the stage of preoperative and postoperative stenting in URSL significantly reduced SRS, especially urinary tract symptoms and body pain, meanwhile showed a good safety profile.