[Female stress urinary incontinence. Treatment with collagen infiltration in the urethra].

OBJECTIVES

To present the results obtained in patients with stress urinary incontinence treated with periurethral collagen injection.

METHODS

26 female patients with stress urinary incontinence were treated with bovine collagen injection; mean volume 10.8 cc. The results achieved by this therapeutic modality are described herein.

RESULTS

Control evaluations performed during a period of one year showed highly satisfactory results had been achieved initially and the success rate gradually increased over the 12 months follow-up. Overall the final results showed a success rate of 34.6%, 38.4% showed frank improvement and 26.9% had a failed procedure. There were no significant differences in the results for both types of stress urinary incontinence. The results correlated with the severity of incontinence; the success rate was higher in the patients with low grade incontinence.

CONCLUSIONS

Periurethral collagen injection is indicated in patients with type I and type III stress urinary incontinence who cannot benefit from surgery. Patients with type II stress urinary incontinence, however, do not benefit from this therapeutic modality.