The Use of Botulinum Toxin A Injection for the Management of External Sphincter Dyssynergia in Neurologically Normal Children
2007
Purpose: Botulinum toxin A has previously been used for neurogenic and nonneurogenic urgency and urge incontinence. We evaluated the effects of sphincteric botulinum toxin A injection in a series of neurologically normal children with evidence of external sphincter dyssynergia with various voiding problems documented by abnormal voiding electromyography as well as voiding cystourethrography to assess its effectiveness for eliminating post-void residual urine.Materials and Methods: We retrospectively reviewed the charts of 16 dysfunctional voiders who underwent botulinum toxin A injection to the external sphincter between 2002 and 2006, including 1 to 3 injections in 14, 1 and 1, respectively. Of 19 injections 17 were performed with 300 U to the sphincter, while 2 of 19 were done with 200 U. Two patients also received 100 U injected into the detrusor. Mean patient age at surgery was 9.0 years (range 6 to 16). Preoperative clinical data were recorded, including medications, electromyography, uroflowmetry wi...
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