Objective:To compare clinical effects between ultrasound-guided obturator nerve block(ONB)spinal-epidural anesthesia(CSEA)and only CSEA on patients with bladder tumors on the lateral wall and trigone undergoing transurethral plasmakinetic resection of bladder tumor(TUPKR-Bt).Method:Forty-eight patients underwent TUPKR-Bt under only CSEA(Group CSEA)and other 50 patients under CSEA plus ultrasound-guided ONB(Group CSEA+O)from January 1st,2012 to October 31 st,2015in the study center were reviewed retrospectiv...