Related Experiment Videos
Periurethral collagen injection: a long-term follow-up study.
BJU International
|November 26, 1999
Summary
Long-term success of periurethral collagen injections for genuine stress incontinence is disappointing, with only 26% of women reporting improvement. Factors like urethral closure pressure and duration of incontinence influenced outcomes, but overall efficacy remains limited.
Area of Science:
- Urology
- Gynecology
- Pelvic Floor Medicine
Background:
- Genuine stress urinary incontinence (SUI) significantly impacts women's quality of life.
- Periurethral bulking agents, such as collagen, have been used to treat SUI.
- Long-term efficacy data for collagen injections in SUI are crucial for clinical decision-making.
Purpose of the Study:
- To evaluate the long-term success of periurethral collagen injections for genuine stress incontinence.
- To identify predictors of long-term success or failure following collagen injection therapy.
Main Methods:
- A cohort of 61 women with SUI received periurethral collagen injections between 1990 and 1992.
- Patients were assessed at multiple intervals up to 24 months post-injection.
- Long-term outcomes were reviewed in 1998 via medical records and questionnaires for 46 women.
Main Results:
- After a minimum of 5 years, 26% of 53 women reported subjective improvement in SUI.
- Higher maximum urethral closure pressure (>20 cmH2O) and shorter incontinence duration (<10 years) predicted better outcomes.
- No correlation was found with BMI, age, pad usage, number of injections, or volume injected.
Conclusions:
- Long-term results of periurethral collagen injections for SUI are disappointing.
- Collagen injections showed a higher failure rate in women with intrinsic sphincter deficiency compared to those with hypermobility.
- Development of durable, non-immunogenic, and minimally inflammatory bulking agents is essential.