An experimental model for rectourethral studies in the posterior urethra of the male canine / 中华泌尿外科杂志

Objective Objective To explore the best dog urethra rectum fistula operation method.Methods In June 2016 to October 2016,15 healthy male dogs were selected as research objects,aged 2-3 years (mean 2.5 years),with a body mass of 12-15 kg (mean 13.5 kg).They were randomly divided into three groups,each group of five.5 male dogs were cut through the rectum.5 male dogs were cut through the perineum.5 male dogs were cut through the rectal sphincter of the anus.Postoperative retrograde urethrectomy rectum angiography,the urethral pressure injection of methylene blue white gauze aizen rectum fistula and histologic evaluation of each group were compared 1,2,3 moths after the operation.Results Anal rectum drag cold knife cut group,1,2,3 moths after the operation,postoperative indicated the exist of orificium fistulae.The urethral pressure injection of methylene blue could observe rectum white gauze aizen,and pathological histology suggested the mucosal lamina propria disorder.There were a large number of inflammatory cells,5 dogs models were successfully built.Abdominal perineal pathway group:1 dog was killed by itself.1 dog one month after operation in anus at 2 cm below diameter about 3 cm appeared in a mixture of urine fistula and urethral orifice outflow,no urine outflow.More than 3 dogs after a week in the edge of serious infection,a canine model of severe dysuria,1,2,3 moths after the operation,postoperative indicated the exist of orificium fistulae.The urethral pressure injection of methylene blue could observe rectum white gauze aizen.3 dogs models were built.Through anal sphincter incision group:five dogs of the urethral fistula were successful,and one dog was incontinent with fecal incontinence.Conclusions The rectal rectum could successfully produce the animal model of the urethral rectal fistula and provide the experimental subjects for the treatment of iatrogenic urethral fistula.

Transurethral Electro-Resection of Renal Pelvic Tumor:Report of 11 cases / 中国微创外科杂志

Objective To study the value of transurethral electro-resection for renal pelvic tumor.Methods Transurethral electro-resection was performed on 11 patients after resection of the kidney.A F8 catheter was inserted into the bladder via the distal end of the ureter.The mucosal tissues around the ureter were then cut,and the ureter was fixed to the catheter and removed by pulling out the catheter.Results The operation was completed in all of the cases with a mean operation time of 115 min(65 to 170 min).None of the patients developed infection or hemorrhage after the surgery.11 patients were followed up for 6 to 18 months(mean,11 months),and no one died during the period.No tumor implantation or other intra-bladder masses were found.ConclusionsTransurethral electro-resection is feasible and safe for renal pelvic tumor.