Midurethral slings in the mesh litigation era

Differentiation of patient-specific void urine-derived human induced pluripotent stem cells to fibroblasts and skeletal muscle myocytes

Cell-based therapy is a major focus for treatment of stress urinary incontinence (SUI). However, derivation of primary cells requires tissue biopsies, which often have adverse effects on patients. A recent study used human induced pluripotent stem cells (iPSC)-derived smooth muscle myocytes for urethral sphincter regeneration in rats. Here, we establish a workflow using iPSC-derived fibroblasts and skeletal myocytes for urethral tissue regeneration: (1) Cells from voided urine of women were reprogrammed into iPSC. (2) The iPSC line U1 and hESC line H9 (control) were differentiated into fibroblasts expressing FSP1, TE7, vinculin, vimentin, αSMA, fibronectin and paxillin. (3) Myogenic differentiation of U1 and H9 was induced by small molecule CHIR99021 and confirmed by protein expression of myogenic factors PAX7, MYOD, MYOG, and MF20. Striated muscle cells enriched by FACS expressed NCAM1, TITIN, DESMIN, TNNT3. (4) Human iPSC-derived fibroblasts and myocytes were engrafted into the periurethral region of RNU rats. Injected cells were labelled with ferric nanoparticles and traced by Prussian Blue stain, human-specific nuclear protein KU80, and human anti-mitochondria antibody. This workflow allows the scalable derivation, culture, and in vivo tracing of patient-specific fibroblasts and myocytes, which can be assessed in rat SUI models to regenerate urethral damages and restore continence.

CO2 Laser and radiofrequency compared to a sham control group in treatment of stress urinary incontinence (LARF study arm 3). A randomized controlled trial

INTRODUCTION AND HYPOTHESIS

Female stress urinary incontinence (SUI) is a prevalent condition, and conservative treatment options are needed. Were evaluated CO₂ laser and radiofrequency as treatment for SUI.

METHODS

One hundred thirty-nine women with SUI were eligible and randomized in a three-arm double-blind randomized controlled trial into radiofrequency (RF), laser (LS) and sham control (SCT) groups, with 3-monthly outpatient treatment sessions. One hundred fourteen women were included, 38 in each group, during a 12-month follow-up. The primary outcomes were: subjective improvement of SUI, evaluated on a Likert scale, and objective cure, which was a composite outcome defined according to negative stress tests, voiding diary and pad test. Questionnaires were also applied. The sample size was calculated to provide 80% power to identify a 20% difference between groups, p < 0.05.

RESULTS

Subjective improvement and objective cure of SUI were identified respectively in 72.6% and 45.2% in LS and in 61.7% and 44.7% in RF, both significantly higher than the 30.0% and 14.0% in SCT. Considering only mild cases (pad test < 10 g), objective cure was achieved in 66.7% in LS, 63.6% in RF and 22.2% in SCT. Significant reduction in the number of episodes of urinary incontinence was found according to voiding diaries (p = 0.029) and pad weight (p = 0.021). A significant reduction in urgency and urinary loss during sexual intercourse was observed only with LS and RF. Improvement in quality of life was also verified by the I-QoL and ICIQ-SF in favor of the energy-treated groups.

CONCLUSIONS

CO₂ laser and radiofrequency are outpatient options for SUI treatment, with no major complications. They had similar results and presented better results than in the sham control group.

Impact of a mid-urethral synthetic mesh sling on long-term risk of systemic conditions in women with stress urinary incontinence: a national cohort study

OBJECTIVE

To compare the incidence of systemic conditions between women who had surgical treatment for stress incontinence with mesh and without mesh.

DESIGN

National cohort study.

SETTING

English National Health Service.

POPULATION

Women with no previous record of systemic disease who had first-time urinary incontinence surgery between 1 January 2006 and 31 December 2013, followed up to the earliest of 10 years or 31 March 2019.

METHODS

Competing-risks regression was used to estimate hazard ratios (HR), adjusted for patient characteristics, with HR > 1 indicating increased incidence following mesh surgery.

MAIN OUTCOME MEASURES

First postoperative admission with a record of autoimmune disease, fibromyalgia or myalgic encephalomyelitis up to 10 years following the first incontinence procedure.

RESULTS

The cohort included 88 947 women who had mesh surgery and 3389 women who had non-mesh surgery. Both treatment groups were similar with respect to age, socio-economic deprivation, comorbidity and ethnicity. The 10-year cumulative incidence of autoimmune disease, fibromyalgia or myalgic encephalomyelitis was 8.1% (95% CI 7.9-8.3%) in the mesh group and 9.0% (95% CI 8.0-10.1%) in the non-mesh group (adjusted HR 0.89, 95% CI 0.79-1.01; P = 0.07). A sensitivity analysis including only autoimmune diseases as an outcome returned a similar result.

CONCLUSIONS

These findings do not support claims that synthetic mesh slings cause systemic disease.

TWEETABLE ABSTRACT

No evidence of increased risk of systemic conditions after stress incontinence treatment with a mesh sling.

Long-term surgical outcome of anterior colporrhaphy and autologous fascial sling (AFS) reinforcement for treatment of high-grade cystocoele

Objective:

To determine the long-term outcomes of anterior colporrhaphy with pubovaginal sling reinforcement in the management of high-grade cystocoele and significant urethral dysfunction.

Materials and Methods:

This is a retrospective case series. From May 2008 to October 2017, all patients who underwent concurrent anterior colporrhaphy and pubovaginal fascial sling performed by a single surgeon were included. Subjective success rates were determined from patient-reported outcomes on follow-up questionnaires using The Patient Global Impression of Improvement (PGI-I) scores. Primary outcome of this study was subjective cystocoele recurrence-free survival. Secondary outcome was complication rate.

Results:

Eighty patients were included with a median age of 63 years. All women had urethral dysfunction (type II urethral hypermobility or intrinsic sphincter deficiency) on fluoroscopic urodynamics in association with a high-grade cystocoele. The median follow-up time for recurrence of cystocoele was 36 months. The 1- and 5-year estimated cystocoele recurrence-free survival was 97.2% and 84.8%, respectively.

Conclusion:

Anterior colporrhaphy with concurrent pubovaginal sling reinforcement for treatment of high-grade cystocoele is a safe procedure with a high rate of success durable up to 5 years. The risk of complications is low with no patient developing chronic pain or rejection of the fascial graft.

Level of evidence:

Not applicable.

Long-term effectiveness and safety of open Burch colposuspension vs retropubic midurethral sling for stress urinary incontinence-results from a large comparative study

BACKGROUND

There are few adequately powered long-term trials comparing midurethral sling and Burch colposuspension. Recent concerns about synthetic mesh with new stringent clinical and research governance support the need for evidence to facilitate shared decision making.

OBJECTIVE

This study aimed to compare long-term outcomes of open Burch colposuspension with the retropubic midurethral sling.

STUDY DESIGN

A matched cohort study of 1344 women with urodynamic stress incontinence (without intrinsic sphincter deficiency) who underwent surgery for stress urinary incontinence. Women had either open Burch colposuspension or the retropubic midurethral sling, from January 2000 to June 2018, in a tertiary center. Follow-up was by chart review and one-time phone follow-up until 2019, using a dedicated database. Primary outcomes were the presence or absence of stress urinary incontinence on follow-up, the success of index surgery based on response to validated questionnaires of patient-reported outcomes, and retreatment rates. Secondary outcomes are described below. Matching (1:3) was done at baseline to avoid confounding.

RESULTS

The study included 1344 women who had either Burch colposuspension (336) or retropubic midurethral sling (1008). Mean follow-up was 13.1 years for Burch colposuspension and 10.1 years for retropubic midurethral sling. In the Burch colposuspension group, 83.0% of patients (279 of 336) reported no ongoing stress urinary incontinence at the time of the latest follow-up vs 85.0% (857 of 1008) in the retropubic midurethral sling group (P=.38). Success in terms of the latest reported International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (defined as International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form score of ≤6) where these data were available were similar within both groups: 76.0% (158 of 208 where this was available) in Burch colposuspension vs 72.1% (437 of 606 where this was available) in retropubic midurethral sling (P=.32). Where this information was available, success defined by a Patient Global Impression of Improvement of "very much improved" and "much improved" was similar between Burch colposuspension and retropubic midurethral sling groups (84.1% [243 of 289] vs 82.0% [651 of 794]; P=.88). Where data were available, 88.1% of women (178 of 202) in the Burch colposuspension group said they were very likely to recommend the surgery to family or a friend vs 85.0% (580 of 682) in retropubic midurethral sling (P=.30).Overall, 3.6% needed repeat incontinence procedures (13 in Burch colposuspension group [3.8%] vs 35 in retropubic midurethral sling group [3.5%]; P=.73). The incidence of mesh exposure was 1.0 %. Notably, 1 Burch colposuspension patient had a suture in the bladder during follow-up; 5 patients have reported long-standing pain across the study population. Overall, 51 women reported new-onset overactive bladder symptoms on follow-up: 10 of 336 (3.0%) had Burch colposuspension and 41 of 1008 (4.1%) had retropubic midurethral sling (P=.41). The need for future prolapse surgery per index procedure was 3.3% after Burch colposuspension vs 1.1% postretropubic midurethral sling (P=.01). Moreover, 9 of the 11 patients who needed a prolapse repair after Burch colposuspension required a posterior repair. The incidence of long-term severe voiding difficulty needing self-catheterization was similar in both groups (0.3% in Burch colposuspension and 0.5 % in retropubic midurethral sling group; P=1.00).

CONCLUSION

This study shows no difference in success, patient satisfaction, or complications between Burch colposuspension and retropubic midurethral sling, although the risk of posterior compartment prolapse operations after Burch colposuspension is increased. Reoperation rates for incontinence were similar in both groups. Chronic pain was a rare outcome.

Post-operative tension adjustment-A simple technical modification in mid-urethral slings (MUS) for stress urinary incontinence (SUI)

INTRODUCTION

Mid-urethral sling (MUS) surgeries have revolutionized the management of stress urinary incontinence (SUI). However, MUS is a delicate balance of tension on the mid urethral segment with a 12 % risk of failure to achieve complete continence; and up-to 20 % chance of post-operative voiding dysfunction. We propose a simple technical modification in which the long ends of the tape at suprapubic or groin area are not cut immediately and are covered with a sterile dressing. After 48-72 h post-surgery the patient is checked for continence and voiding difficulties. Following this an ultrasonographic assessment of post-void residual urine is performed. Keeping in mind these 3 criteria the tape is adjusted. After complete subjective as well as objective satisfaction the long ends of tape are cut.

MATERIAL AND METHODS

This is a retrospective analysis of women who underwent MUS surgery for the management of SUI, with our simple technical modification of tape adjustment in the postoperative period. A total of 17 patients operated by single surgeon in one year were included.

RESULTS

Our results show that 58.8 % of our patients who underwent MUS procedures required post-operative tape adjustment. The number was significantly higher in the MUS - Retropubic group (85.7 %) as compared to the MUS - Obturator group (40 %). Three patients in the MUS - Retropubic group required a second time tape adjustment. Following tape adjustment all patients had complete continence (subjective and objective), with no voiding dysfunction.

CONCLUSION

The incidence of postoperative voiding dysfunction is significant following MUS surgery for SUI. A simple technical modification of delaying the cutting of the tape for two to three days gives the opportunity for perfect tension adjustment.

Single-Incision Mini-Sling for the Treatment of Female Stress Urinary Incontinence: Is it Actually Inferior to Transobturator Vaginal Tape and Tension-Free Vaginal Tape?

Objectives:

The aim of the study was to report the extended long-term results of the use of single-incision mini-sling (SIMS), tension-free vaginal tape (TVT), and transobturator tape (TOT) for the treatment of female stress urinary incontinence (SUI) at the Department of Gynecology and Obstetrics of the University Medical Center Ljubljana.

Materials and Methods:

Enrolled women were evaluated by Patient Global Impression of Severity (PGI-S), Patient Global Impression of Improvement (PGI-I), Sandvik severity scale, Urogenital Distress Inventory (UDI-6), Incontinence Impact Questionnaire (IIQ-7), and Incontinence Questionnaire-Urinary Incontinence (ICIQ-UI) Short Form and data about diagnosis, procedures, complications, reoperations, postoperative results, and satisfaction with procedure were recorded.

Results:

In analyzed group of patients (n = 357), 116 (32%) underwent SIMS procedure, 189 (53%) TOT, and 52 (15%) TVT. The SIMS, TOT, and TVT groups did not differ significantly from each other in PGI-S, PGI-I, Sandvik severity scale, UDI-6, IIQ-7, and ICIQ-UI Short Form or in postoperative complication rate. Repeat surgery was needed in 9.5% after SIMS, in 13.2% of TOT patients and in 23.1% of TVT patients (P = 0.194). Urinary retention occurred in 9.5% of the SIMS patients, in 9.5% of the TOT patients, and in 13.5% of the TVT patients (P = 0.682). Mesh erosion/inflammation occurred in 3.4% of the SIMS patients, in 6.3% of the TOT patients, and in 3.8% of the TVT patients (P = 0.485).

Conclusion:

The efficacy and safety of SIMS, TOT, and TVT in the surgical treatment of SUI are comparable. The choice of the technique should be based on the relative pros and cons of techniques and the surgeon's experience.

Complications and re-operations after tension-free vaginal tape operation in women with stress urinary incontinence

INTRODUCTION AND HYPOTHESIS

We evaluate intraoperative and short-term postoperative (≤ 3 months) complications and long-term re-operations (up to 6 years) after tension-free vaginal tape (TVT) operation in women with stress urinary incontinence (SUI).

METHODS

Data from 446 women undergoing TVT operation between 2012 and 2016 at a tertiary referral center was retrospectively collected. Data included patient baseline demographics, information from the TVT operation and the following postoperative period, and scores from patient questionnaires [the International Consultation of Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) and Patient Global Impression of Improvement (PGI-I)]. Collected data were investigated for incidence of complications and re-operations, postoperative improvement in patient questionnaires, and association between complications and baseline patient demographics.

RESULTS

The only intraoperative complication was bladder perforation (2.0%). Postoperative complications included: infection (0.7%), hematoma (0.9%), bleeding (0.2%), pain (0.9%), erosion of the vaginal mucosa (1.1%), persistent SUI (0.7%), and voiding dysfunction > 24 h (10.3%). Re-operations included: operation due to infections (0.4%), incontinence surgery for persistent SUI (0.4%), revision for tape erosion (1.1%), tape mobilization (3.6%), and tape division (0.2%). A significant reduction in urinary incontinence symptoms was observed in the ICIQ-UI SF and PGI-I. The reduction in ICIQ-UI SF did not vary significantly between patients with and without complications. No association between complications and baseline patient demographics was found.

CONCLUSION

This study demonstrated high safety and efficacy of the TVT operation with only minor short-term complications and few long-term re-operations. The ICIQ-UI SF improved significantly postoperatively and was not statistically significantly affected by the occurrence of complications.

Survey on surgery for stress urinary incontinence in an era mid-urethral slings are being questioned

INTRODUCTION

Concerns about vaginal mesh have reduced the use of mid-urethral slings (MUS) in some countries. In view of their potential withdrawal in Belgium and The Netherlands, we polled urogynaecologists on their practice for treating stress urinary incontinence (SUI) and what their experience is with alternative procedures, and we asked them how their patients perceive the risk and success rates.

METHODS

A survey among members of the pelvic floor special interest group of the Flemish Society for Obstetrics and Gynaecology, Belgian Association of Urology and Dutch Society of Obstetrics and Gynaecology.

RESULTS

Their primary procedure of choice is the MUS (99%). Sixty-five per cent performs at least 25 MUS yearly; they report high success (90%; IQR [85-92]) and low adverse outcome rates. Physicians anticipate complications as reported in the literature: 5% (IQR [410]) overactive bladder, 5% (IQR [2-10]) voiding problems, 2% (IQR [15]) exposures, 2% (IQR [1-5]) dyspareunia and 1% (IQR [1-3]) chronic pain. Eighty-five per cent of physicians report their patients express fears about having a MUS though usually they cannot precisely tell why. Reportedly they tell their physicians of concerns about pain (54%), exposure (45%), dyspareunia (25%), voiding problems (15%) or overactive bladder (8%). Only half of respondents had ever performed a colposuspension. The majority of these were older and performed colposuspension via laparotomy. Only six (4%) had performed > 20 colposuspensions yearly.

CONCLUSION

Dutch and Belgian urogynaecologists estimate success and adverse effect rates of MUS in line with the literature. Their patients most cited worries were fear of chronic pain and exposure. Only half of respondents had ever performed a colposuspension. They were older and performed the procedure via laparotomy.

The role of urodynamics in females with lower urinary tract symptoms

Objective: To review the role of urodynamic studies (UDS) in females with lower urinary tract symptoms (LUTS), as LUT dysfunction is a common condition. The role of UDS was and continues to be vital in the assessment of such cases; however, utilisation is still debated amongst clinicians as to when and in which conditions it should be used.

Materials and methods: We conducted a literature review using the Medical Literature Analysis and Retrieval System Online (MEDLINE) search engine from year 1990 until August 2018, using the keywords: ‘female urology’, ‘lower urinary tract symptoms’, ‘urodynamic’, ‘incontinence’, ‘overactive bladder’, ‘bladder outlet obstruction’. We also reviewed the latest international guidelines related to the subject including: the International Consultation of Incontinence, American Urological Association, European Urology Association, and International Continence Society.

Results: Using >60 reference articles and international guidelines, our review showed that there is a trend of utilisation of UDS in females with LUTS.

Conclusion: UDS remains a valuable diagnostic test, which provides vital information to both the surgeon and patient prior to invasive treatment, with minimal morbidity.

Abbreviations: DO: detrusor overactivity; LUT(D): lower urinary tract (dysfunction); NLUTD: neurogenic LUTD; OAB: overactive bladder; P_detQ_max: detrusor pressure at maximum urinary flow; POP: pelvic organ prolapse; PVR: post-void residual urine volume; Q_max: maximum urinary flow rate; UDS: urodynamic studies; (M)(S)(U)UI: (mixed) (stress) (urgency) urinary incontinence

Stem Cells for Urinary Incontinence: Functional Differentiation or Cytokine Effects?

Minimally invasive stem cell therapy for stress urinary incontinence may provide an effective nonsurgical treatment for this common condition. Clinical trials of periurethral stem cell injection have been under way, and basic science research has demonstrated the efficacy of both local and systemic stem cell therapies. Results differ as to whether stem cells have a therapeutic effect by differentiating into permanent, functional tissues or exert benefits through a transient presence and the secretion of regenerative factors. This review explores the fate of therapeutic stem cells for stress urinary incontinence and how this may relate to their mechanism of action.