electrical stimulation of the urethra evokes bladder contractions and emptying in spinal cord injury men case studies objective electrical stimulation of the urethra can evoke bladder contractions in persons with spinal cord injury sci the objective of this study was to determine whether electrical stimulation of the urethra could evoke bladder contractions that empty the bladdermethods the first patient was a 45yearold man with a t6 asia a sci secondary to a gunshot wound 15 years prior the second patient was a 51yearold man with a t2 asia a sci secondary to a fall from scaffolding 2 years prior both patients demonstrated neurogenic detrusor overactivity on urodynamics and managed their bladder with clean intermittent catheterization and oxybutynin medication following informed consent each patient discontinued oxybutynin 2 days prior to urodynamic testing urodynamics were performed with a custom 12 french balloon catheter mounted with ringshaped electrodes 3 mm positioned in the prostatic urethra after filling the bladder to approximately threefourth of capacity at a rate of 25 mlminute the urethra was stimulated with a range of parameters to determine whether electrical stimulation could evoke a bladder contraction and empty the bladderresults electrical stimulation of the prostatic urethra evoked bladder contractions peak detrusor pressures of 6080 cm h2o that emptied the bladder in both subjects in the first subject stimulation 912 ma 20 hz emptied 6475 leaving postvoid residual volumes pvrs of 4120 ml in the second subject stimulation 20 ma 20 hz emptied 6877 leaving pvrs of 5645 mlconclusion urethral stimulation evoked bladder emptying in persons with sci