Fractional CO2 laser treatment for women with stress predominant urinary incontinence: a randomized controlled trial

Vaginal Erbium Laser Versus Pelvic Floor Muscle Training for Stress Urinary Incontinence: A Randomised Controlled Trial

INTRODUCTION AND HYPOTHESIS

Current studies on vaginal laser therapy for the management of stress urinary incontinence (SUI) are inconclusive, and many lack comparison with another conservative treatment. Therefore, we compared the efficacy of Er:YAG laser for SUI with that of pelvic floor muscle training (PFMT).

METHODS

Single-centre, randomised controlled trial comparing laser treatment (3-6 applications) with PFMT (9-18 sessions) in women with mild to moderate SUI. Main outcome measures included subjective change in urinary incontinence symptoms by change from baseline to 4 months after randomisation by Urogenital Distress Inventory-6 (UDI-6; primary), adverse events, and other subjective and objective outcomes up to 24 months. A priori sample size calculation for a non-inferiority study resulted in 28 patients per arm. Because of a higher than expected dropout early in the study, we increased our sample size from 56 to 60, without unblinding of the data.

RESULTS

Sixty women were enrolled. Two participants discontinued their allocated treatment (one in each group). At 4 months, mean difference in change in UDI-6 scores was -6.99 (95% CI = -22.34; 8.37), demonstrating non-inferiority of laser to PFMT (p = 0.023). Within groups, most patients improved, yet subjective cure was reached in only a minority (laser: 11% [3 out of 28]; PFMT: 8% [2 out of 26]). The mean number of treatment visits was 4.25 (SD 1.17) in the laser group and 10.04 (SD 6.36) in the PFMT group. There were no subjective or objective inter-group differences. At 24 months, the majority of patients requested additional, yet alternative treatment. There were no serious adverse events at any time point.

CONCLUSIONS

Treatment effect of vaginal laser and PFMT in patients with mild and moderate SUI were comparable, limited and short lasting. No adverse events were reported.

Exploring the role of laser therapy for stress urinary incontinence: a literature review

Stress urinary incontinence (SUI) significantly impacts the quality of life, necessitating innovative treatment options beyond conventional approaches. This comprehensive review aimed to evaluate laser therapy as a promising intervention for SUI management. A systematic search was conducted using the keywords "laser" and "stress urinary incontinence" in the PubMed, Scopus, Web of Science, and Embase databases. The search covers studies from January 1, 2014, to November 30, 2024. A comparative analysis with traditional treatments, such as pelvic floor exercises and medications, underscores the potential advantages and limitations of laser therapy. Clinical studies and research findings are examined to evaluate the efficacy and safety profile of laser therapy, including its short-term success rates and potential complications. Patient experiences and perspectives provide a qualitative dimension, offering insights into the real-world impact and challenges associated with laser therapy for SUI. This review also explores the cost-effectiveness of laser therapy and compares its long-term and short-term effects, positioning it within the broader landscape of SUI management. Future trends and ongoing research are outlined, highlighting the potential integration of laser therapy with multimodal approaches. Recommendations for clinical practice emphasize patient selection criteria and address concerns and expectations, ensuring laser therapy is adopted as a valuable and evidence-based addition to SUI management.

Conservative treatments for women with stress urinary incontinence: a systematic review and network meta-analysis

Objective

This study aimed to compare the effectiveness of various conservative treatment strategies for women with stress urinary incontinence.

Methods

A comprehensive search of PubMed, Web of Science, Embase, and the Cochrane Library was conducted from their inception through March 2024, without restrictions on language or location. Randomized controlled trials (RCTs) comparing the efficacy of conservative treatments for stress urinary incontinence, using short-term pad test or the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) score as outcome measures, were included. We conducted a network meta-analysis using a random-effects model to compare the effectiveness of different conservative treatment strategies, employing prediction interval plots and league tables, and ranked them according to the surface under the cumulative ranking curve (SUCRA). The quality of the included studies was assessed following the Cochrane Handbook for Systematic Reviews of Interventions.

Results

A total of 31 RCTs involving 1,900 patients across 8 intervention categories were included in the analysis. SUCRA rankings indicated that electrical stimulation (SUCRA = 95.9%) was the most effective therapy for improving ICIQ-UI SF scores, followed by biofeedback electrical stimulation (SUCRA = 84.9%), radiofrequency (SUCRA = 77.5%), biofeedback (SUCRA = 57.8%), magnetic stimulation (SUCRA = 45.3%), pelvic floor muscle training (SUCRA = 38.4%), Er: YAG laser (SUCRA = 37.4%), and CO2 laser (SUCRA = 7.4%). In terms of reducing urine leakage, the treatments were ranked in descending order as follows: Er: YAG laser (SUCRA = 97.5%), biofeedback electrical stimulation (SUCRA = 83.4%), biofeedback (SUCRA = 67.0%), radiofrequency (SUCRA = 59.5%), electrical stimulation (SUCRA = 48.4%), pelvic floor muscle training (SUCRA = 43.0%), magnetic stimulation (SUCRA = 27.8%), and CO2 laser (SUCRA = 21.4%). Based on the clustered rankings of the two metrics, biofeedback electrical stimulation was identified as the most effective therapy for improving stress urinary incontinence.

Conclusion

Based on the combined analysis of two indicators, we found that biofeedback electrical stimulation may be the optimal therapy for the conservative management of stress urinary incontinence.

Systematic review registration

https://www.crd.york.ac.uk/prospero/, identifier CRD42024569845.

Current Treatment of Stress Urinary Incontinence by Bulking Agents and Laser Therapy-An Update

Stress urinary incontinence (SUI) affects around 20% of women. In addition to the established suburethral sling insertion, two less invasive approaches are of interest today: urethral bulking agents and vaginal laser therapy. This review discusses articles through December 2023 identified by a PubMed literature search using the keywords "incontinence" and "bulking" or "laser". Although the two approaches are less effective than sling insertions, there are specific conditions in which one or the other technique is more advantageous. Injecting bulking agents into the urethra only takes some minutes and works without general anesthesia. The method is particularly suited for elderly, frail, or obese patients with multiple comorbidities, but is also applicable for all patients and in combination with other therapies. Generally, the safety profile is good but differs between bulking materials. Two laser types-the Erbium:YAG laser with SMOOTH-mode and the fractional ablative CO2 laser-deliver heat into the tissue to induce tissue tightening and regeneration. Intravaginal laser therapy improves mild to moderate SUI, while studies describe how intraurethral laser therapy is also beneficial for severe SUI. Young women between childbirths, as well as postmenopausal women, may benefit from laser therapy. The method is safe, can be performed on an outpatient basis, and does not require any artificial material.