Twelve subjects experiencing stress urinary incontinence caused by spinal injury or myelomeningocele were treated by periurethral injection of a bulking agent, glutaraldehyde cross-linked (GAX) collagen. Of the 11 subjects who completed the program, seven were either cured or improved and four were only slightly improved or no better following injection. The valsalva (abdominal) leak point pressure (LPP) rose an average of 57 cm H2O (pre-treatment mean of 60 cm H2O versus post-treatment mean of 117 cm H2O) and none of the patients experienced significant complications during the mean follow-up period of 24 months. Every subject injected was able to maintain an intermittent catheterization program after treatment. These data support the use of GAX collagen as an alternative or adjunct therapy to pharmacotherapy, surgical reconstruction or implantation of a prosthesis in the management of stress urinary incontinence in the neuropathic urethra.
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