Single-incision midurethral sling shows less pain and similar success rate in a short-term follow-up compared to the transobturator tape method in the treatment of stress urinary incontinence

Single-incision needleless mini-sling technique for female stress urinary incontinence: A comparative study with standard transobturator inside-out technique

To evaluate the safety and efficacy of surgeon-tailored polypropylene mesh (STM) through a needle-less single incision mini-slings (SIMS) vs. standard trans-obturator tape (TOT) in the treatment of female stress urinary incontinence (SUI).

METHODS

We conducted an open-label randomized controlled trial that included women with SUI. Eligible women were randomized in a 1:1 ratio to receive either standard TOT or SIMS techniques. All procedures were performed using a surgeon-tailored polypropylene mesh and monofilament tape.

RESULTS

A total of 60 women were included. The mean operative time was significantly longer in the standard TOT group. The mean bleeding rate was significantly higher in the standard TOT group (87.6 ± 10.6 cc) compared to the SIMS group (60.0 ± 8.1 cc). There was no urethral injury in both groups. Transient thigh pain occurs in 12 cases (40 %) of the standard TOT and no cases in the SIMS group (p < 0.001). After three months, there was no significant statistical difference between the result of the two groups as regard to cure or improvement rate. No failed cases were reported in both groups (p = 0.64). Likewise, there was no significant difference between the two groups regarding patients' satisfaction rate.

CONCLUSIONS

SIMS was not inferior to standard TOT. STM SIMS is a mini-invasive, relatively safe, reproducible, easy to perform in a short time, with excellent patient tolerability and minimal pain, allowing early return to work and economically effective surgical procedure for the treatment of female stress urinary incontinence.

Single-incision mini-slings versus standard synthetic mid-urethral slings for surgical treatment of stress urinary incontinence in women: The SIMS RCT

BACKGROUND

Stress urinary incontinence is the most common type of urinary incontinence in premenopausal women. Until recently, synthetic mid-urethral slings (mesh/tape) were the standard surgical treatment, if conservative management failed. Adjustable anchored single-incision mini-slings are newer, use less mesh and may reduce perioperative morbidity, but it is unclear how their success rates and safety compare with those of standard tension-free mid-urethral slings.

OBJECTIVE

The objective was to compare tension-free standard mid-urethral slings with adjustable anchored single-incision mini-slings among women with stress urinary incontinence requiring surgical intervention, in terms of patient-reported effectiveness, health-related quality of life, safety and cost-effectiveness.

DESIGN

This was a pragmatic non-inferiority randomised controlled trial. Allocation was by remote web-based randomisation (1 : 1 ratio).

SETTING

The trial was set in 21 UK hospitals.

PARTICIPANTS

Participants were women aged ≥ 18 years with predominant stress urinary incontinence, undergoing a mid-urethral sling procedure.

INTERVENTIONS

Single-incision mini-slings, compared with standard mid-urethral slings.

MAIN OUTCOME MEASURES

The primary outcome was patient-reported success rates on the Patient Global Impression of Improvement scale at 15 months post randomisation (≈ 1 year post surgery), with success defined as outcomes of 'very much improved' or 'much improved'. The primary economic outcome was incremental cost per quality-adjusted life-year gained. Secondary outcomes were adverse events, impact on other urinary symptoms, quality of life and sexual function.

RESULTS

A total of 600 participants were randomised. At 15 months post randomisation, adjustable anchored single-incision mini-slings were non-inferior to tension-free standard mid-urethral slings at the 10% margin for the primary outcome [single-incision mini-sling 79% (212/268) vs. standard mid-urethral sling 76% (189/250), risk difference 4.6, 95% confidence interval -2.7 to 11.8; p _{non-inferiority} < 0.001]. Similarly, at 3 years' follow-up, patient-reported success rates in the single-incision mini-sling group were non-inferior to those of the standard mid-urethral sling group at the 10% margin [single-incision mini-sling 72% (177/246) vs. standard mid-urethral sling 67% (157/235), risk difference 5.7, 95% confidence interval -1.3 to 12.8; p _{non-inferiority} < 0.001]. Tape/mesh exposure rates were higher for single-incision mini-sling participants, with 3.3% (9/276) [compared with 1.9% (5/261) in the standard mid-urethral sling group] reporting tape exposure over the 3 years of follow-up. The rate of groin/thigh pain was slightly higher in the single-incision mini-sling group at 15 months [single-incision mini-sling 15% (41/276) vs. standard mid-urethral sling 12% (31/261), risk difference 3.0%, 95% confidence interval -1.1% to 7.1%]; however, by 3 years, the rate of pain was slightly higher among the standard mid-urethral sling participants [single-incision mini-sling 14% (39/276) vs. standard mid-urethral sling 15% (39/261), risk difference -0.8, 95% confidence interval -4.1 to 2.5]. At the 3-year follow-up, quality of life and sexual function outcomes were similar in both groups: for the International Consultation on Incontinence Questionnaire Lower Urinary Tract Symptoms Quality of Life, the mean difference in scores was -1.1 (95% confidence interval -3.1 to 0.8; p = 0.24), and for the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, International Urogynecological Association-Revised, it was 0 (95% confidence interval -0.1, 0.1; p = 0.92). However, more women in the single-incision mini-sling group reported dyspareunia [12% (17/145), compared with 4.8% (7/145) in the standard mid-urethral sling group, risk difference 7.0%, 95% confidence interval 1.9% to 12.1%]. The base-case economics results showed no difference in costs (-£6, 95% confidence interval -£228 to £208) or quality-adjusted life-years (0.005, 95% confidence interval -0.068 to 0.073) between the groups. There is a 56% probability that single-incision mini-slings will be considered cost-effective at the £20,000 willingness-to-pay threshold value for a quality-adjusted life-year.

LIMITATIONS

Follow-up data beyond 3 years post randomisation are not available to inform longer-term safety and cost-effectiveness.

CONCLUSIONS

Single-incision mini-slings were non-inferior to standard mid-urethral slings in patient-reported success rates at up to 3 years' follow-up.

FUTURE WORK

Success rates, adverse events, retreatment rates, symptoms, and quality-of-life scores at 10 years' follow-up will help inform long-term effectiveness.

TRIAL REGISTRATION

This trial was registered as ISRCTN93264234.

FUNDING

This project was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 26, No. 47. See the NIHR Journals Library website for further project information.

Safety and efficacy of surgical transobturator tape in the treatment of stress urinary incontinence in women - three years of follow-up

Introduction/Objective. Stress urinary incontinence (SUI) is defined as the complaint of involuntary loss of urine in effort or physical exertion, or on sneezing or coughing. It is a common clinical condition affecting 50% of middle-aged and elderly women. Mid-urethral slings (MUSs) are the gold standard in the treatment of SUI. The aim of this study was to investigate the success rate and complications of surgical treatment of SUI in women with transobturator tape (TOT) within the three years of follow-up. Methods. From January 2011 until January 2018, 86 women with predominantly SUI were operated by TOT procedure. In 61.6% of patients SUI was confirmed by preoperative urodynamic examination (cystometry, uroflowmetry, urethral presser profile) and in 38.4% of patients by clinical examination of stress test (cough provocation). All patients were invited for a follow-up examination 6, 12, 24 and 36 months after surgery. The result of the operation is defined as cured, improved or without success. Results. The average age was 55 (32-72) years. The most common complications were tape erosion (3.5%), incision bleeding (2.3%), transient leg pain (3.5%), dyspareunia (2.3%), vaginal erosion (3.5%) and de novo urge (5.8%). After three years of follow-up, 82.6% patients were cured. Conclusion. TOT is a safe, effective and successful procedure with 82.6% of cured patients during a three-year follow-up.