Reversible Clinical Outcome After Sphincter Stent Removal |
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Authors: | Michael B Chancellor David A Rivas Toyohiko Watanabe James K Bennett Jenelle E Foote Bruce G Green E Wylly Killorin Robert MacMillan |
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Institution: | aFrom the Thomas Jefferson University, Philadelphia, Pennsylvania, Shepherd Spinal Center, Atlanta, Georgia and East Toronto General Hospital, Toronto, Ontario, Canada. |
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Abstract: | PurposeWe determined whether the self-expanding sphincter stent, a potential alternative to conventional external sphincterotomy for the treatment of detrusor external sphincter dyssynergia, causes a permanent effect on the lower urinary tract.Materials and MethodsFour spinal cord injured men with voiding symptoms of detrusor external sphincter dyssynergia as noted by complete urological evaluation, including a video urodynamic study, were treated with the self-expanding sphincter stent. However, the device was explanted 6 months or longer after insertion in all 4 cases due to stent migration (3) and difficulty with condom catheter urinary drainage (1).ResultsAll stents were removed completely without damage to the urethra. Mean voiding pressure decreased from 62.5 plus/minus 39.4 to 20.7 plus/minus 6.5 cm. water after sphincter stent placement. One year after stent explanation mean voiding pressure remained unchanged from preoperative values of 58.5 plus/minus 21.5 cm. water. No patient had stress urinary incontinence or endoscopically apparent urethral strictures.ConclusionsThe stent can be removed even after complete epithelialization and an extended interval without damage to external sphincter function or urethral stricture formation. The urinary sphincter stent is an effective, reversible treatment for patients with detrusor external sphincter dyssynergia. |
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