Efficacy Analysis of Intelligent Pressure-Controlled Ureteral Pressure-Measuring Guide Sheath and Flexible Ureteral Guide Sheath at the Head End in Ureteroscopic Lithotripsy
Gong Yi
Yang Feng
Abstract：Objective:To analyze the efficacy of the intelligent pressure-controlled ureteral manometry access sheath and the tip-flexible ureteral access sheath in flexible ureteroscopic lithotripsy.Methods:A prospective study was conducted on 122 patients with ureteral calculi(calculus diameter:1-3 cm)admitted to the Department of Urology,Tongliang Hospital of the First Affiliated Hospital of Chongqing Medical University,from October 2023 to October 2024.All patients were ran-domly divided into two groups and received different treatments:Group A(69 cases)used a pressure-measurable flexible ure-teroscopic suction sheath,and Group B(53 cases)used a tip-flexible negative-pressure suction sheath.Intraoperative indica-tors(operation time,intraoperative blood loss,injury status)and postoperative complications(fever,urosepsis,residual cal-culi,etc.)were recorded and compared.Data were analyzed using SPSS 26.0,with chi-square test and t-test applied for statis-tical analysis.Results:Compared with Group B,Group A had less intraoperative blood loss and shorter operation time,with statistically significant differences(P<0.05).Postoperatively,the fever rate and urosepsis-related indicators(white blood cell count and C-reactive protein level)in Group A were lower than those in Group B,with statistically significant differences(P<0.05).Regarding postoperative residual calculi,the calculus diameter in Group A at 24 hours and 3 months after surgery was significantly smaller than that in Group B,with statistically significant differences(P<0.05).There were no statistically significant differences in the complete stone clearance rate and residual stone rate between the two groups(P>0.05).The in-cidence of ureteral stricture and calculus recurrence in Group A at 6 and 12 months after surgery was lower than that in Group B(P<0.05).Conclusion:Compared with the tip-flexible negative-pressure suction sheath,the pressure-measurable flexible ureteroscopic suction sheath has obvious advantages in operation time and blood loss,causes less injury during surgery,and is free from postoperative fever and urosepsis.These findings suggest that it is safer and more effective in the treatment of 1-3 cm ureteral calculi.
Keywords：ureteral calculisuction sheathsurgical effectintelligent pressure-controlled ureter
Publication Date：2025-08-28
Online Publishing Date：2025-10-22(First online date of this platform, not the publication date of the document)
Pages：6( 250-255 )