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  • Title: Collagen injection for treatment of urinary incontinence in children.
    Author: Kassouf W, Capolicchio G, Berardinucci G, Corcos J.
    Journal: J Urol; 2001 May; 165(5):1666-8. PubMed ID: 11342951.
    Abstract:
    PURPOSE: We assess the success rate of periurethral collagen injection in children with neurogenic bladder dysfunction secondary to myelomeningocele. MATERIALS AND METHODS: From 1992 to 1998, 15 male and 5 female patients with spina bifida (age 13.3 +/- 3.8 years) underwent endoscopic collagen injection for the treatment of urinary incontinence secondary to sphincter deficiency. Mean followup was 4.2 years. Pretreatment urodynamic study showed a stable compliant bladder with an average leak point pressure of 52 cm. H2O (range 23 to 100). Concurrent medical management included anticholinergics in 15 cases, agonists in 3, and clean intermittent catheterization in 16. Five patients had undergone previous ileocystoplasty. RESULTS: Collagen injections were given with the patient under general anesthesia. The number of injections was 1 in 5 cases, 2 in 11, 3 in 3, and 4 in 1. Average collagen volume injected per treatment was 6.6 cc (range 2 to 13). All patients were evaluated on a subjective continence scale of no change (wet), improved or completely dry at the time of assessment. Of the 20 patients, 16 had no change, 3 showed improvement and 1 was dry. Initial improvement in the first 2 months after injection deteriorated thereafter in 16 cases. CONCLUSIONS: The previously reported high success rate of collagen injection is not supported by this study. With long-term followup collagen injection is rarely effective for treating urinary incontinence in children with neurogenic sphincter deficiency.
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