Comparison of 2 μm continuous-wave laser resection and transurethral resection of bladder tumor for nonmuscle-invasive bladder tumor

Abstract

Objective To compare the safety and efficacy between RevoLix 2 μ m continuous-wave (CW) laser resection of bladder tumor and transurethral resection of bladder tumor (TURBT) in patients with non-muscle-invasive bladder tumor, and to evaluate clinical value of 2 μ m CW laser resection for nonmuscle-invasive bladder tumor. Methods 62 patients with non-muscle-invasive bladder tumor were divided into 2 groups including 2 μ m CW laser resection group (32 cases) and TURBT group (30 cases) according to the random number table.The intravesical instillation of pirarubicin was performed regularly. The operative time,drop in hemoglobin,indwelling catheterization time,and operative complications were analyzed.Results All cases were completed successfully. The mean operative times of 2 μm CW laser resection group and TURBT group were 32.5±10.5 min and 31.3± 9.8 min, respectively, and no statistical difference could be found between both groups (t =0.364,P=0.674).3 cases were found to have obturator nerve reflex in TURBT group,but no obturator nerve reflex was found in 2 μn CW laser resection group.Bladder irrigation time of 2 μm laser resection group was statistically shorter than that of TURBT group [ (6.2±2.6)h vs (23.8±6.5)h,t =8.294,P=0.006]. There was also no significant difference in postoperative catheterization time between both groups [(4.2±1.5)d vs (5.2±1.8)d,t=1.468,P=0.103 ]. Postoperative hospitalization time of the two groups was not shown significant difference [ (5.3± 1.5) d vs (5.8±2.8) d,t =0.627,P =0.531 ].All cases were followed up for 6～18 months,and there were no significant difference in the recurrence rate between both groups (x2=0.481,P =0.562). Conclusion 2 μm CW laser resection is a novel excellent treatment for non-muscle-invasive bladder tumor and has the similar effect as TURBT with the advantage of significantly less blood loss and rapid recovery after surgery. Key words: Urinary bladder neoplasms; Laser; Transurethral resection of bladder tumor