Vaginal erbium laser treatment for stress urinary incontinence: A multicenter randomized sham-controlled clinical trial

Innovative decision making tools using discrete mathematics for stress urinary incontinence treatment

In this study, we applied graph theory to clinical decision-making for Stress Urinary Incontinence (SUI) treatment. Utilizing discrete mathematics, we developed a system to visually understand the shortest path to the desired treatment outcomes by considering various patient variables. Focusing on women aged 35-50, we examined the effectiveness of Tension-free Vaginal Tape (TVT) surgery and Vaginal Erbium Laser (VEL) treatment for over 15 years. The TVT group consisted of 102 patients who underwent surgery using either the Advantage Fit mid-urethral sling system (Boston Scientific Co., MA, USA) or the GYNECARE TVT retropubic system (Ethicon Inc., NJ, USA). The VEL group included 113 patients treated with a non-ablative Erbium: YAG laser (FotonaSmooth™ XS; Fotona d.o.o., Ljubljana, Slovenia), and there were 112 patients in the control group. We constructed a network diagram analyzing the correlations between health, demographic factors, treatment methods, and patient outcomes. By calculating the shortest path using heuristic functions, we identified significant correlations and treatment effects. This approach supports patient decision making by choosing between TVT and VEL treatments based on individual objectives. Our findings provide new insights into SUI treatment, highlighting the value of a data-driven personalized approach for clinical decision-making. This interdisciplinary study bridges the gap between mathematics and medicine, demonstrating the importance of a data-centric approach in clinical decisions.

The Potential of Non-ablative Erbium (YAG) Laser Treatment for Complications After Midurethral Sling Surgery: A Narrative Review

Midurethral sling (MUS) surgery, using tension-free vaginal tape and transobturator tape, has been widely adopted for the treatment of stress urinary incontinence (SUI). However, postoperative complications, including persistent urinary incontinence, mesh exposure, and pain, have become problematic, and surgical treatments for these complications face challenges, such as invasiveness, treatment-resistant cases, and recurrence. This review provides an overview of the current evidence regarding these complications and the potential of vaginal non-ablative erbium (YAG) laser (VEL) treatment as a minimally invasive option with low risk of complications. Studies have suggested the effectiveness of VEL treatment, performed using devices such as IncontiLase (SP Dynamis; Fotona d.o.o., Ljubljana, Slovenia), for persistent urinary incontinence after MUS surgery, pain following mesh removal, and asymptomatic mesh exposure. VEL treatment is expected to be a new treatment option for complications following MUS surgery; however, further large-scale comparative trials are required to verify its efficacy and safety and to establish criteria for its indications. Appropriate assessment of the indications and provision of sufficient information to patients is important when presenting VEL as a treatment option.

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.

Mesh Extraction Surgery and Laser Treatment for Pain After Mid-Urethral Sling Surgery: A Case Series

Stress urinary incontinence (SUI) is the leakage of urine due to abdominal pressure. The primary surgical approach involves the insertion of a mid-urethral sling (MUS) with a mesh, which can occasionally lead to post-operative pain. To address complications, MUS removal is often necessary. We hypothesize that a non-ablative erbium:yttrium aluminum garnet (Er:YAG) laser combined with vagina (vaginal erbium laser (VEL)) and urethra (urethra erbium laser (UEL)) treatments could be a post-MUS removal option. A study involving laser treatment started in 2016 for women with recurrent SUI one year after MUS removal who were not affected by pelvic floor muscle exercises and who did not wish to have MUS reinsertion or urethral injection treatment. Five patients (mean age, 54.5 ± 9.35 years) were enrolled, all receiving laser therapy. The visual analog scale (VAS) was used to assess pain as a primary endpoint, and the one-hour pad test was performed for SUI as a secondary endpoint. The mean pain VAS score changed from 8.57 ± 0.69 to 2.29 ± 1.50 (p = 0.00002) after MUS removal. Furthermore, the VAS score was 0 (p = 0.0034) after VEL + UEL. SUI changed from 4.42 ± 2.9 g on the one-hour pad test during MUS insertion to 66.7 ± 39.0 (p = 0.005) after removal. However, after the VEL + UEL treatment, it was 3.71 ± 5.25 g (p = 0.0035). The pathological tissue collected from the five patients at the time of MUS removal surgery had vacuolization in the part where the artificial material was present in the specimen, with foreign-body giant cells proliferated around it. One year after the MUS removal, mucous membrane regeneration was poor, and tissue thickness was thin. One year after the VEL + UEL treatment, the tissue had normalized mucosa, and there was no inflammation. Our study suggests MUS extraction and VEL + UEL as viable options for treating MUS pain in women.