It narrated the complications of patients with detaining double-J-tube including aversion and regurgitation of stent tube,infection,irritative symptoms of bladder,formation of scaling and calculus,blood urine,ineffective drainage of double-J-tube and overtime detaining of double-J-tube.

Influence of ketamine premedication on patients with urinary catheter before general anesthesia decreases the severity of catheter related bladder discomfort;

Values of suprapubic bladder puncture in urodynamic examination in BPH;

Methods:Transurethral resection of the prostate(TURP)was performed after the suprapubic bladder puncture with our modification under the monitoring of TUR display.