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  • Title: Sacral neuromodulation for refractory detrusor overactivity in women with an artificial urinary sphincter.
    Author: Roupret M, Chartier-Kastler E, Almeras C, Ayoub N, Haertig A, Richard F.
    Journal: J Urol; 2004 Jul; 172(1):236-9. PubMed ID: 15201782.
    Abstract:
    PURPOSE: We assessed the efficacy of sacral neuromodulation as an alternative therapeutic option in women with an artificial urinary sphincter (AUS) who had de novo irritative urinary symptoms (urgency/frequency) refractory to conventional treatment. MATERIALS AND METHODS: Between 1984 and 2002 we implanted an AUS in 350 women and detrusor overactivity developed in 14. Six of the 14 patients responding positively to a percutaneous nerve evaluation test (greater than 50% subjective/objective improvement) were implanted with an S3 neuromodulator within 42.8 weeks (range 21 to 106) of AUS implantation. Followup included analysis of the voiding diary, a pad test and urodynamic assessment. RESULTS: After 30.5 months followup (range 14 to 40) 1 patient was dry, 4 were improved and treatment failed in 1. At 12 months mean voiding frequency daily had decreased from 17 (range 12 to 23) to 8 (range 4 to 12) and the mean number of leakages episodes daily had decreased from 14.7 (range 8.5 to 17) to 6 (range 4 to 10). Mean voided volume had increased from 121.7 (range 90 to 170) to 180 ml (range 120 to 225), mean first desire to void volume had increased from 117 (range 88 to 190) to 183 ml (range 130 to 275) and mean functional bladder capacity had increased from 325 (range 200 to 530) to 372 ml (range 250 to 580). Uninhibited bladder contractions had resolved in 4 of 5 patients. CONCLUSIONS: In women who already have an AUS with urge incontinence sacral neuromodulation can help resolve symptoms. Because this therapy does not compromise the potential for future treatment, it appears to be an alternative option in these patients. It can postpone or avoid more mutilating surgery and self-catheterization.
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