Abstract

ObjectiveTo evaluate the efficacy of urethral bulking agents for stress urinary incontinence (SUI) in the setting of prior failed sling. MethodsThis is a retrospective review of patients who underwent urethral bulking agent injections for a primary complaint of SUI following prior failed sling surgery. The outcomes assessed were patient reported improvement, need for further interventions for incontinence and validated questionnaires. Values for questionnaires were obtained from the patient's preprocedure visit, at the first visit following their last injection and at their most recent visit within our system. ResultsOver the study period, 73 patients underwent urethral bulking agent injection following failed sling. Thirty-eight patients received Macroplastique injections and 35 had collagen injections. On average, patients underwent 2.6 injections. Seventy-one percent of patient reported at least partial symptom resolution at first postinjection follow-up. Validated questionnaire responses also improved at short-term follow-up (mean difference in American Urological Association Symptom Index-3.8, Michigan Incontinence Symptom Index-5.1, P <.01). Forty patients had long-term follow-up data available (mean 39.6 months postinjection). Statistically significant improvement persisted on the stress incontinence and quality of life domains of the validated questionnaires. ConclusionIn our cohort of patients with persistent or recurrent SUI following urethral sling procedure, 71% experienced short-term improvement or resolution of symptoms following urethral bulking agent injections, with SUI-specific improvement persisting at an average of 35 months in patients with available data.

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