Long-term anatomical and functional assessment of trans-vaginal cystocele repair using a tension-free polypropylene mesh

A Biomechanical Analysis of Prophylactic Mesh Reinforced Porcine Laparotomy Incisions

INTRODUCTION

Research indicates that prophylactic mesh may help prevent incisional hernia after laparotomy, but best practice patterns in these situations are still evolving. Here, we compare the failure loads (FLs) and biomechanical stiffness (BMS) of 35 porcine abdominal wall laparotomy incisions reinforced with meshes of various widths and fixation distances using biomechanical testing.

METHODS

In each specimen, a 10-cm incision was made and closed using continuous 1-0 Maxon suture. Specimens were randomized to mesh width (none, 2.5 cm, 3 cm, 4 cm, 6 cm, 8 cm) and tack separation (1.5 cm, 2 cm apart) and the meshes secured in an onlay fashion. Cyclic loads oscillating from 15 N to 140 N were applied to simulate abdominal wall stress, and the specimens subsequently loaded to failure. FLs (N) and BMS (N/mm) were comparatively analyzed.

RESULTS

All specimens failed via suture pull-through. FLs and BMS were lowest in specimens with suture-only (421.43 N; 11.69 N/mm). FLs and BMS were significantly higher in 4-cm mesh specimens (567.51 N) than those with suture, 2.5-cm, and 3.0-cm mesh (all P < 0.05). FLs in specimens with a greater number of tacks were consistently higher in meshes of similar sizes, although these did not reach significance.

CONCLUSIONS

A 4-cm mesh reenforcement was superior to suture-only and smaller meshes at preserving strength in laparotomy closure in a porcine model but larger meshes (6 cm, 8 cm) did not provide an additional benefit. Meshes with more fixation points may be advantageous, but additional data are needed to make definitive conclusions.

Evaluation of the short-term host response and biomechanics of an absorbable poly-4-hydroxybutyrate scaffold in a sheep model following vaginal implantation

Objective

To evaluate the host‐ and biomechanical response to a fully absorbable poly‐4‐hydroxybutyrate (P4HB) scaffold in comparison with the response to polypropylene (PP) mesh.

Design

In vivo animal experiment.

Setting

KU Leuven Center for Surgical Technologies.

Population

Fourteen parous female Mule sheep.

Methods

P4HB scaffolds were surgically implanted in the posterior vaginal wall of sheep. The comparative PP mesh data were obtained from an identical study protocol performed previously.

Main outcome measures

Gross necropsy, host response and biomechanical evaluation of explants, and the in vivo P4HB scaffold degradation were evaluated at 60‐ and 180‐days post‐implantation. Data are reported as mean ± standard deviation (SD) or standard error of the mean (SEM).

Results

Gross necropsy revealed no implant‐related adverse events using P4HB scaffolds. The tensile stiffness of the P4HB explants increased at 180‐days (12.498 ± 2.66 N/mm SEM [p =0.019]) as compared to 60‐days (4.585 ± 1.57 N/mm) post‐implantation, while P4HB degraded gradually. P4HB scaffolds exhibited excellent tissue integration with dense connective tissue and a moderate initial host response. P4HB scaffolds induced a significantly higher M2/M1 ratio (1.70 ± 0.67 SD, score 0–4), as compared to PP mesh(0.99 ± 0.78 SD, score 0–4) at 180‐days.

Conclusions

P4HB scaffold facilitated a gradual load transfer to vaginal tissue over time. The fully absorbable P4HB scaffold, in comparison to PP mesh, has a favorable host response with comparable load‐bearing capacity. If these results are also observed at longer follow‐up in‐vivo, a clinical study using P4HB for vaginal POP surgery may be warranted to demonstrate efficacy.

Tweetable Abstract

Degradable vaginal P4HB implant might be a solution for treatment of POP.

Degradable vaginal P4HB implant might be a solution for treatment of POP.

International Urogynecology Consultation Chapter 1 Committee 5: relationship of pelvic organ prolapse to associated pelvic floor dysfunction symptoms: lower urinary tract, bowel, sexual dysfunction and abdominopelvic pain

INTRODUCTION AND HYPOTHESIS

This article from Chapter 1 of the International Urogynecology Consultation (IUC) on Pelvic Organ Prolapse (POP) establishes the prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP.

METHODS

An international group of nine urogynecologists/urologists and one medical student performed a search of the literature using pre-specified search terms in Ovid, MEDLINE, Embase and CINAHL from January 2000 to March 2019. Publications were eliminated if not relevant or they did not include clear definitions of POP or the symptoms associated with POP. Definitions of POP needed to include both a physical examination finding using a validated examination technique and the complaint of a bothersome vaginal bulge. Symptoms were categorized into symptom groups for ease of evaluation. The Specialist Unit for Review Evidence (SURE) was used to evaluate for quality of the included articles. The resulting list of articles was used to determine the prevalence of various symptoms in women with POP. Cohort studies were used to evaluate for possible causation of POP as either causing or worsening the symptom category.

RESULTS

The original search yielded over 12,000 references, of which 50 were used. More than 50% of women with POP report lower urinary tract symptoms. Cohort studies suggest that women with POP have more obstructive lower urinary tract symptoms than women without POP. Pain described in various ways is frequently reported in women with POP, with low back pain being the most common pain symptom reported in 45% of women with POP. In cohort studies those with POP had more pain complaints than those without POP. Sexual dysfunction is reported by over half of women with POP and obstructed intercourse in 37-100% of women with POP. Approximately 40% of women have complaints of bowel symptoms. There was no difference in the median prevalence of bowel symptoms in those with and without POP in cohort studies.

CONCLUSIONS

The prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP are common but inconsistently reported. There are few data on incidence of associated symptoms with POP, and cohort studies evaluating causality are rare or inconsistent. Obstructive voiding, lower abdominal and pelvic pain, and sexual dysfunction are most frequently associated with POP.

Urethral length and bladder neck behavior: can dynamic magnetic resonance imaging give the same results as introital ultrasound?

PURPOSE

To compare dynamic magnetic resonance imaging (dMRI) and introital ultrasound results with regard to urethral length measurements and the evaluation of bladder neck changes.

METHODS

Retrospective analyses of urethral length measurements and detection of bladder neck changes (rotated/vertical bladder neck descent, urethral funneling) were conducted in women-scheduled for surgical treatment with alloplastic material-who had undergone introital ultrasound and dMRI presurgery and 3 months postsurgery. Measurement differences between both imaging modalities were evaluated by assessing the confidence interval for the difference in means between the datasets using bootstrap analysis.

RESULTS

Based on data from 40 patients (320 image series), the urethra could be clearly measured on every pre- and postsurgical dMRI dataset but not on preoperative ultrasound images in nine women during Valsalva maneuver due to a large cystocele. The estimation of the mean difference distribution based on 500,000 bootstrap resamples indicated that the urethral length was measured shorter by dMRI pre- and postsurgery at rest and postsurgery during Valsalva maneuver (median 1.6-3.1 mm) but longer by dMRI (median 0.2 mm) during Valsalva maneuver presurgery. Rotated/vertical bladder neck descent and urethral funneling diagnoses showed concordance of 67-74% in the direct comparison of patients; the estimation of the concordance indicated poorer outcomes with 50-72%.

CONCLUSIONS

Metric information on urethral length from dMRI is comparable to that from introital ultrasound. dMRI is more advantageous in cases with an extended organ prolapse. At present, dMRI does not give the same diagnosis on bladder neck changes as introital ultrasound does.

Five-year outcome after pelvic floor reconstructive surgery: evaluation using dynamic magnetic resonance imaging compared to clinical examination and quality-of-life questionnaire

Background Dynamic magnetic resonance imaging (dMRI) captures the entire pelvis during Valsalva maneuver and helps diagnosing pelvic floor changes after reconstructive surgery. Purpose To evaluate therapeutic outcome five years after reconstructive surgery using clinical examination, dMRI, and quality-of-life (QOL) questionnaire. Material and Methods Clinical examination, dMRI, and QOL questionnaire were conducted before surgery and in the follow-ups at 12 weeks, one year, and five years in women with pelvic organ prolapse (POP) stage ≥2. dMRI was performed at 1.5-T using a predefined protocol including sagittal T2-weighted (T2W) sequence at rest and sagittal T2W true-FISP sequence at maximum strain for metric POP measurements (reference points = bladder, cervix, pouch, rectum). Pelvic organ mobility (POM) was defined as the difference of the metric measurement at maximum strain and at rest. Results Twenty-six women with 104 MRI examinations were available for analysis. dMRI results mostly differ to clinical examination regarding the overall five-year outcome and the posterior compartment in particular. dMRI diagnosed substantially more patients with recurrent or de novo POP in the posterior compartment (n = 17) compared to clinical examination (n = 4). POM after five years aligns to preoperative status except for the bladder. POM reflects best the QOL results regarding defecation disorders. Conclusion A tendency for recurrent and de novo POP was seen in all diagnostic modalities applied. dMRI objectively visualizes the interaction of the pelvic organs and the pelvic floor after reconstructive surgery and POM correlated best with the women's personal impression on pelvic floor complaints.

Endometrial Mesenchymal Stem/Stromal Cells Modulate the Macrophage Response to Implanted Polyamide/Gelatin Composite Mesh in Immunocompromised and Immunocompetent Mice

The immunomodulatory properties of human endometrial mesenchymal stem cells (eMSC) have not been well characterised. Initial studies showed that eMSC modulated the chronic inflammatory response to a non-degradable polyamide/gelatin mesh in a xenogeneic rat skin wound repair model, but the mechanism remains unclear. In this study, we investigated the immunomodulatory effect of eMSC on the macrophage response to polyamide/gelatin composite mesh in an abdominal subcutaneous wound repair model in C57BL6 immunocompetent and NSG (NOD-Scid-IL2Rgamma^null) immunocompromised mice to determine whether responses differed in the absence of an adaptive immune system and NK cells. mCherry lentivirus-labelled eMSC persisted longer in NSG mice, inducing longer term paracrine effects. Inclusion of eMSC in the mesh reduced inflammatory cytokine (Il-1β, Tnfα) secretion, and in C57BL6 mice reduced CCR7⁺ M1 macrophages surrounding the mesh on day 3 and increased M2 macrophage marker mRNA (Arg1, Mrc1, Il10) expression at days 3 and 7. In NSG mice, these effects were delayed and only observed at days 7 and 30 in comparison with controls implanted with mesh alone. These results show that the differences in the immune status in the two animals directly affect the survival of xenogeneic eMSC which leads to differences in the short-term and long-term macrophage responses to implanted meshes.

Alterations of Vascular Endothelial Growth Factor A Expression and Microvessel Density Associated With Polypropylene Vaginal Mesh

OBJECTIVE

Vaginal mesh exposure is the most common complication from mesh use in prolapse and incontinence surgery. Angiogenesis is an essential component of tissue healing, and defective angiogenesis plays a role in chronic wounds. We hypothesized that patients with exposures will have impaired angiogenesis as evidenced by altered tissue vascular endothelial growth factor A (VEGFA) expression and microvessel density. The study objective was to compare angiogenesis in women with vaginal mesh exposures, those with vaginal mesh without exposures, and in women who were mesh-naive.

METHODS

Patients undergoing polypropylene mesh removal and patients without mesh undergoing urinary incontinence or prolapse surgery were recruited. Full-thickness vaginal epithelial biopsies were obtained. The relative abundance of VEGFA RNA was measured with reverse transcription-polymerase chain reaction. The VEGFA and CD31 immunohistochemistry were also performed.

RESULTS

Ninety-two subjects were enrolled and biopsied. Mean age (SD) was 57.2 (12.8) years, 16 (17.4%) were smokers, and 68 (73.9%) were postmenopausal.The VEGFA RNA expression did not differ between subjects with mesh exposure and with mesh but no exposure (P = 0.89). However, compared with subjects with no mesh, vaginal VEGFA expression was decreased in subjects with any implanted mesh (relative expression, 0.72; P = 0.02). Microvessel density was increased in subjects with mesh exposure compared with subjects with no mesh (P < 0.01). The VEGFA expression by immunohistochemistry was significantly lower in postmenopausal subjects without estrogen treatment compared with premenopausal and postmenopausal subjects being treated with estrogen (P = 0.02).

CONCLUSIONS

The presence of polypropylene mesh and hormonal status are associated with evidence of altered angiogenesis.

Diagnosis and Therapy of Female Pelvic Organ Prolapse. Guideline of the DGGG, SGGG and OEGGG (S2e-Level, AWMF Registry Number 015/006, April 2016)

Aims: The aim was to establish an official interdisciplinary guideline, published and coordinated by the German Society of Gynecology and Obstetrics (DGGG). The guideline was developed for use in German-speaking countries. In addition to the Germany Society of Gynecology and Obstetrics, the guideline has also been approved by the Swiss Society of Gynecology and Obstetrics (SGGG) and the Austrian Society of Gynecology and Obstetrics (OEGGG). This is a guideline published and coordinated by the DGGG. The aim is to provide evidence-based recommendations obtained by evaluating the relevant literature for the diagnostic, conservative and surgical treatment of women with female pelvic organ prolapse with or without stress incontinence. Methods: We conducted a systematic review together with a synthesis of data and meta-analyses, where feasible. MEDLINE, Embase, Cinahl, Pedro and the Cochrane Register were searched for relevant articles. Reference lists were hand-searched, as were the abstracts of the Annual Meetings of the International Continence Society and the International Urogynecological Association. We included only abstracts of randomized controlled trials that were presented and discussed in podium sessions. We assessed original data on surgical procedures published since 2008 with a minimum follow-up time of at least 12 months. If the studies included descriptions of perioperative complications, this minimum follow-up period did not apply. Recommendations: The guideline encompasses recommendations for the diagnosis and treatment of female pelvic organ prolapse. Recommendations for anterior, posterior and apical pelvic organ prolapse with or without concomitant stress urinary incontinence, uterine preservation options, and the pros and cons of mesh placements during surgery for pelvic organ prolapse are presented. The recommendations are based on an extensive and systematic review and evaluation of the current literature and include the experiences and specific conditions in Germany, Austria and Switzerland.

Identification and Characterization of Human Endometrial Mesenchymal Stem/Stromal Cells and Their Potential for Cellular Therapy

SummaryHuman endometrium is a highly regenerative tissue, undergoing more than 400 cycles of proliferation, differentiation, and shedding during a woman's reproductive life. Adult stem cells, including mesenchymal stem/stromal cells (MSCs), are likely responsible for the immense cellular turnover in human endometrium. The unique properties of MSCs, including high proliferative ability, self-renewal, differentiation to mesodermal lineages, secretion of angiogenic factors, and many other growth-promoting factors make them useful candidates for cellular therapy and tissue engineering. In this review, we summarize the identification and characterization of newly discovered MSCs from the human endometrium: their properties, the surface markers used for their prospective isolation, their perivascular location in the endometrium, and their potential application in cellular therapies.

SIGNIFICANCE

The endometrium, or the lining of uterus, has recently been identified as a new and accessible source of mesenchymal stem cells, which can be obtained without anesthesia. Endometrial mesenchymal stem cells have comparable properties to bone marrow and adipose tissue mesenchymal stem cells. Endometrial mesenchymal stem cells are purified with known and novel perivascular surface markers and are currently under investigation for their potential use in cellular therapy for several clinical conditions with significant burden of disease.

Synthetic Graft Augmentation in Vaginal Prolapse Surgery: Long-Term Objective and Subjective Outcomes

OBJECTIVE

To report long-term objectives and subjective outcomes in women who underwent prolapse surgery with a synthetic graft augmentation.

DESIGN

Retrospective analysis (Canadian Task Force classification II-3).

SETTING

University hospital in the southeastern United States.

PATIENTS

Women with symptomatic pelvic organ prolapse who underwent transvaginal graft augmentation using the Prolift mesh system between July 2006 and December 2008 for a minimum 5-year follow-up.

INTERVENTIONS

Subjects completed the Pelvic Floor Distress Inventory (PFDI-20), the Pelvic Floor Impact Questionnaire (PFIQ-7), the Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ), and the Patient Satisfaction Questionnaire. Subjects also underwent postoperative physical examination with Pelvic Organ Prolapse Quantification (POP-Q) and vaginal pain/stricture assessment. Long-term postoperative findings were compared with preoperative baseline data.

MEASUREMENTS AND MAIN RESULTS

Of 208 eligible subjects, 70 completed the questionnaires only, and 48 of these 70 provided both postoperative examination and questionnaire data. The mean duration of follow-up was 7.0 ± 0.7 years (range, 5.8-8.1 years). POP-Q measurements of Ba (point B anterior), Bp (B posterior), C (cervix), GH (genital hiatus), PB (perineal body), and overall pelvic organ prolapse stage were significantly improved (all p < .001 except for PB, p = .006). PFIQ-7 (total, Urinary Impact Questionnaire, and Pelvic Organ Prolapse Impact Questionnaire) and PFDI-20 (total, Urinary Distress Inventory, and Pelvic Organ Prolapse Distress Inventory) scores significantly improved (all p < .001). No differences were noted in the colorectal-anal subscales (Colorectal-Anal Impact Questionnaire and Colorectal-Anal Distress Inventory) and PISQ scores at >5-year follow-up (all p > .05). Satisfaction rates were 15.7% for not at all, 35.7% for somewhat, and 48.6% for completely satisfied. Complications included graft exposure (n = 3; 6%) and dyspareunia (n = 25; 36%).

CONCLUSION

Women undergoing transvaginal prolapse surgery using a synthetic graft continue to have positive objective and subjective outcomes, leading to significantly improved quality of life at a minimum 5-year follow-up.

Long-term outcome after transvaginal mesh repair of pelvic organ prolapse

INTRODUCTION AND HYPOTHESIS

The aim of this study was to report long-term subjective and objective outcomes after the transvaginal mesh (TVM) procedure in long-term. Possible late-onset complications were of particular interest.

METHODS

This was a retrospective analysis of TVM performed using Prolift™ transvaginal mesh measuring subjective outcome using validated questionnaires. Objective outcome was assessed using the Pelvic Organ Prolapse Quantification (POP-Q) system using two definitions: POP-Q stage ≤ 1, and vaginal wall prolapse at or above the hymen or vaginal apex not descending below the upper third of the vagina. Complications were reported with the Prosthesis/Graft Complication Classification Code designed by the International Continence Society/International Urogynecological Association (ICS/IUGA).

RESULTS

Of 195 patients, 161 (82.6 %) participated this study after a median of 7 years. The scores in questionnaires evaluating urinary (UI) or anal incontinence and constipation or pelvic floor symptoms were low, indicating favorable surgical outcomes. Altogether, 80.1 % of patients were satisfied with the procedure. Anatomical cure was 56.4 % and 69.3 % depending on the definition used. Reoperation due to POP in any compartment was performed in 16.2 % of patients. Mesh exposure rate was 23 %, most of these being asymptomatic and of late onset.

CONCLUSIONS

Outcome of the TVM procedure was satisfactory. Anatomical cure was inferior to subjective cure. Mesh exposure rate was high; most exposures observed in the long-term were of late onset and were asymptomatic.

Double-sling procedure for the surgical management of stress urinary incontinence with concomitant anterior vaginal wall prolapse

PURPOSE

To assess the safety, efficacy of double-sling procedure (DS) for the surgical management of stress urinary incontinence (SUI) with concomitant anterior wall prolapse (AVWP) and to identify if less synthetic material implantation will decrease the complication rates without decreasing the high cure rates.

METHODS

We reviewed the women who underwent DS in two institutions from January 2009 to December 2013. In DS, there are two transobturator tapes inserted from two different routes for the surgical management of SUI with concomitant AVWP. POP-Q was used for anatomical evaluation of prolapse. SUI was assessed by cough stress test and ICIQ-SF questionnaire. We accepted that the patient was satisfied if the visual analog scale score was ≥80. The severity of urinary incontinence was classified by ICIQ-SF. The women were evaluated at the 3 and 12 months and annually.

RESULTS

A total of 74 women met the requirements for inclusion and had sufficient records for analysis. The mean follow-up period was 35.4 months (range 12-60). Operative time was 33.2 ± 6.2. The objective cure and subjective success rates of SUI were 87.8 and 93.2 %, respectively. The satisfaction from the surgery was also high with 86.5 % rate. The anatomical success in our series was rather high with 96 % rate. Our overall complication rate was 12.2 %. Mesh extrusion rate was 0 %.

CONCLUSIONS

Double-sling procedure is feasible, efficient, and safe. Reducing the mesh size did not have a detrimental effect on the outcomes of SUI treatment and simultaneous AVWP repair.

One-year dynamic MRI follow-up after vaginal mesh repair: evaluation of clinical, radiological, and quality-of-life results

BACKGROUND

Pelvic organ prolapse (POP) is a common disorder in elderly women often surgically repaired with alloplastic meshes; yet knowledge of the pelvic floor behavior and multi-compartment defects postoperatively is scarce.

PURPOSE

To evaluate the 1-year outcome after mesh repair in patients with POP using clinical examination (CE), dynamic magnetic resonance imaging (dMRI), and the prolapse quality-of-life (P-QOL) questionnaire.

MATERIAL AND METHODS

A prospective observational study was conducted of 69 women undergoing pelvic mesh surgery. Clinical examination, dMRI, and the P-QOL questionnaire were applied before and after surgery to evaluate POP. Mean outcome measures were POP outcome as determined on clinical and dMRI examinations and its impact on quality of life. Statistical results were obtained with SPSS version 15.0. ANOVA was used to compare pre-/postsurgical quality of life data.

RESULTS

Sixty-nine women (mean age, 64.75 years; BMI, 26.75 kg/m(2); postmenopausal, 89.2%) were recruited and treated with Seratom® or Perigee™ mesh implants. A significant improvement in the position of bladder neck, vaginal vault/uterus, pouch of Douglas, and rectum was found 12 weeks and 1 year after surgery using POP-Q scale and dMRI. Advanced cystoceles and enteroceles seem underestimated by CE using the POP-Q system compared to dMRI results (P = 0.003 and P < 0.001), vice versa dMRI overestimated POP compared to CE. Sixty-four women completed the P-QOL questionnaire, presenting reduced quality of life before surgery which improves postsurgically. Prolapse impact and physical, social, and role limitations correlated strongest with a low quality of life (P < 0.001).

CONCLUSION

The 1-year follow-up after mesh repair showed statistical and clinical improvement for all tools employed. dMRI seems a reliable tool for simultaneous assessment of defects in all three compartments, but tends to overestimate POP compared to clinical examination.

3-year results of transvaginal cystocele repair with transobturator four-arm mesh: A prospective study of 105 patients

OBJECTIVES

To evaluate the long-term efficacy and safety of transobturator four-arm mesh for treating cystoceles.

PATIENTS AND METHODS

In this prospective study, 105 patients had a cystocele corrected between January 2004 and December 2008. All patients had a symptomatic cystocele of stage ⩾2 according to the Baden-Walker halfway stratification. We used only the transobturator four-arm mesh kit (Surgimesh®, Aspide Medical, France). All surgical procedures were carried out by the same experienced surgeon. The patients' characteristics and surgical variables were recorded prospectively. The anatomical outcome, as measured by a physical examination and postoperative stratification of prolapse, and functional outcome, as assessed by a questionnaire derived from the French equivalents of the Pelvic Floor Distress Inventory, Pelvic Floor Impact Questionnaire and the Pelvic Organ Prolapse-Urinary Incontinence-Sexual Questionnaire, were considered as the primary outcome measures. Peri- and postoperative complications constituted the secondary outcome measures.

RESULTS

At 36 months after surgery the anatomical success rate (stage 0 or 1) was 93%. On a functional level, all the scores of quality of life and sexuality were improved. The overall satisfaction score (visual analogue scale) was 71.4%. There were no perioperative adverse events. Mesh erosion was reported in 7.6% and mesh retraction in 5.7% of the patients.

CONCLUSIONS

If the guidelines and precautions are followed, vaginal prosthetic surgery for genitourinary prolapse has shown long-term benefits. It provides excellent results both anatomically and functionally. However, complications are not negligible and some are specific to prosthetic surgery.

Vaginal degeneration following implantation of synthetic mesh with increased stiffness

OBJECTIVE

To compare the impact of the prototype prolapse mesh Gynemesh PS with that of two new-generation lower stiffness meshes, UltraPro and SmartMesh, on vaginal morphology and structural composition.

DESIGN

A mechanistic study employing a nonhuman primate model.

SETTING

Magee-Womens Research Institute at the University of Pittsburgh.

POPULATION

Parous rhesus macaques, with similar age, weight, parity and Pelvic Organ Prolapse-Questionnaire scores.

METHODS

Following Institutional Animal Care Use Committee approval, 50 rhesus macaques were implanted with Gynemesh PS (n = 12), UltraPro with its blue line perpendicular to the longitudinal axis of vagina (n = 10), UltraPro with its blue line parallel to the longitudinal axis of vagina (n = 8) or SmartMesh (n = 8) via sacrocolpopexy following hysterectomy. Sham-operated animals (n = 12) served as controls.

MAIN OUTCOME MEASURES

The mesh-vagina complex was removed after 12 weeks and analysed for histomorphology, in situ cell apoptosis, total collagen, elastin, glycosaminoglycan content and total collagenase activity. Appropriate statistics and correlation analyses were performed accordingly.

RESULTS

Relative to sham and the two lower stiffness meshes, Gynemesh PS had the greatest negative impact on vaginal histomorphology and composition. Compared with sham, implantation with Gynemesh PS caused substantial thinning of the smooth muscle layer (1557 ± 499 μm versus 866 ± 210 μm, P = 0.02), increased apoptosis particularly in the area of the mesh fibres (P = 0.01), decreased collagen and elastin content (20%, P = 0.03 and 43%, P = 0.02, respectively) and increased total collagenase activity (135%, P = 0.01). Glycosaminoglycan, a marker of tissue injury, was highest with Gynemesh PS compared with sham and other meshes (P = 0.01).

CONCLUSION

Mesh implantation with the stiffer mesh Gynemesh PS induced a maladaptive remodelling response consistent with vaginal degeneration.

Vaginal sacrocolporectopexy for the surgical treatment of uterine and vaginal vault prolapses: confirmation of the surgical method and perioperative results of 101 cases

PURPOSE

In this study, we sought to confirm the surgical method of vaginal sacrocolporectopexy and previously reported positive perioperative results of this procedure in a large patient group. We describe the approach which offers a vaginal, safe alternative to sacrospinous repair, laparoscopic or open vaginosacropexy and the use of synthetic meshes to treat pelvic organ prolapse.

METHODS

We conducted a monocentric, prospective, nonrandomized study for treatment of patients with uterine and vaginal vault relapse (grade 2-4). All patients underwent a preoperative urogynecological urodynamic examination. We focus on method, operative time, complications, blood transfusions, hospital stay and clinical data.

RESULTS

Between March 2006 and March 2011, 101 consecutive patients of mean age 64 (40-89) years, with sub or total uterine prolapse (n=69, grade 2-4) and vaginal vault prolapse (n=32, grade 2-4) were treated with vaginal sacrocolporectopexy. Cystocele (grade 2-4) was found in 88 (87.1%) and rectocele (grade 2-4) in 43 (42.5%) patients. Mean duration of surgery with sacrocolporectopexy was 70 min (28-165) without hysterectomy, and 76 min (40-219) with hysterectomy. Regression analysis of all patients (n=101) showed a significant decrease of operative time in the group without hysterectomy after 40 cases. Three bladder lesions, two in patients with a history of hysterectomy, occurred during surgery and were corrected intraoperatively without further complications. No patient required a blood transfusion. Hemoglobin levels decreased slightly from a preoperative mean of 13.6 mg/dl (10.3-15.7) to a postoperative mean of 11.7 mg/dl (8.6-14.7).

CONCLUSION

Vaginal sacrocolporectopexy is a safe vaginal method for the treatment of sub-/total uterine/vaginal vault prolapse.

Midterm prospective comparison of vaginal repair with mesh vs Prolift system devices for prolapse

OBJECTIVE

To compare midterm clinical outcome using modified pelvic floor reconstructive surgery with mesh (MPFR) vs Prolift devices for the treatment of pelvic organ prolapse (POP).

STUDY DESIGN

This prospective observational cohort study involved 223 women with POP stages III-IV who were assigned to either MPFR (n=131) or Prolift device (n=92). Outcomes were analyzed at 6 and 12 months and the last follow-up visit postoperatively. Main outcome measures included pelvic organ prolapse quantification measurement, Short Form-20 Pelvic Floor Distress Inventory (PFDI-20), Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ) questionnaires, perioperative outcomes, complications, and a personal interview about urinary and sexual symptoms. Statistical analysis included comparison of means (Wilcoxon test or Student's t-test) and proportions (Chi-square test). Multivariate analysis was carried out using Cox proportional hazard model.

RESULTS

At follow-up (median, 36 months; range, 17-58 months), anatomic success for MPFR and Prolift was 87.07% and 93.41%, respectively (P=0.1339). Both operations significantly improved quality of life, and PFDI-20 scores were lower in the Prolift group than the MPFR group (P=0.03). Complication rates did not differ significantly between the two groups and the prevalence of urinary symptoms decreased postoperatively in both groups. The cost of operation, however, was RMB ¥11,882.86 yuan for MPFR and ¥23,617.59yuan for Prolift (P=0.00).

CONCLUSIONS

MPFR and Prolift had comparable anatomic outcomes, Prolift had better functional outcomes than MPFR, but MPFR is much cheaper than Prolift. MPFR is an alternative, cheap and effective surgical treatment option to mesh-kits for the management for POP.

Central compartment and apical defect repair using synthetic mesh

Pelvic organ prolapse is an increasingly common condition for women that has been challenging to treat due to high recurrence rates after surgical repair. The introduction of mesh-augmented prolapse repairs as a means to achieve more robust repairs had great initial promise. As more data emerge on outcomes and novel mesh complications, the when and where of mesh augmentation has become much less clear. This article reviews the relevant literature on the use of mesh in central and apical repairs. This includes a detailed look at the available data for vaginal mesh kits and several recent trials comparing mesh kits to traditional repairs. The article ends with a discussion of the recent U.S. Food and Drug Administration (FDA) safety communication on the use of transvaginal mesh in pelvic organ prolapse and the authors' views of how practice may change in this new environment.

[Prolapse surgery. With abdominal or vaginal meshes?]

In prolapse surgery several surgical techniques are available. The different open, laparoscopic and vaginal approaches are distinguished by distinct success and relapse rates and operation-specific complications. A safe and optimal therapeutic pelvic floor surgery should be based on the three support levels according to DeLancy and be individually adjusted for every patient. The vaginal approach may be used for all kinds of female genital prolapse and is a comparatively less invasive technique with a short time of convalescence. Apart from stress incontinence there is no need for synthetic meshes in primary approaches and excellent results with low complication and relapse rates can be achieved. An uncritical application of synthetic material is to be avoided in vaginal repair at all times. Abdominal surgical techniques, both open and laparoscopic, present their strengths in the therapeutic approach to level 1 defects or stress incontinence. They provide excellent functional and anatomical corrections and low relapse rates. Abdominally inserted meshes have lower complication rates than vaginal ones.

Transvaginal cystocele repair using pursestring technique reinforced with custom-tailored two-armed mesh

OBJECTIVE

To evaluate the efficacy and safety of vaginal cystocele repair using a pursestring suture technique reinforced with custom-tailored 2-armed mesh.

METHODS

The records of patients who underwent isolated cystocele repair by a single surgeon were retrospectively reviewed. All women were assessed by clinical examination and lower urinary tract symptoms preoperatively and at 3 and 6 months and every year postoperatively. The principal outcome measure was anatomic cure (stage 1 or lower) assessed by the Pelvic Organ Prolapse Quantification system.

RESULTS

From May 2005 to June 2009, 50 consecutive patients with minimum stage 2 (Aa or Ba 0) cystocele were treated using the procedure. The mean follow-up was 24 months (range 12-54), and the success rate was 96% (48 of 50). No intraoperative complications occurred. Two developed vaginal erosion (4%) and underwent excision of the extruded mesh smoothly. The final 21 consecutive patients underwent urodynamic assessment pre- and postoperatively. Compared with the baseline urodynamic findings, surgery resulted in decreased maximal urethral pressure and maximal urethral closure pressures. However, neither increased de novo incontinence nor reduced cystometric bladder capacity developed.

CONCLUSION

The use of the pursestring suture technique reinforced with custom-tailored 2-armed mesh for vaginal cystocele repair is safe, effective, and economic.

The IUGA/ICS classification of complications of prosthesis and graft insertion: a comparative experience in incontinence and prolapse surgery

INTRODUCTION AND HYPOTHESIS

This is a presentation of case series after the use of alloplasic material in urogynaecology.

METHODS

From 2004 to 2010, a total 179 patients with complications have been referred directly after the use of alloplastic material in incontinence and prolapse surgery. Of this total, 125 patients had a previous vaginal sling plasty because of urinary stress incontinence, while 54 patients underwent a prolapse surgery with mesh use. Symptoms and findings are expressed by the recently introduced International Urogynecological Association/International Continence Society (IUGA/ICS) terminology.

RESULTS

The most frequent findings after vaginal sling plasty were bladder outlet obstruction, pain and tape exposure. The most frequent findings after prolapse surgery were pain and mesh erosion. The IUGA/ICS classification does not give the possibility to express functional disorders. Most revisions were done more than 2 months after surgery. After incontinence surgery, mostly the vaginal area of suture line was affected; after prolapse surgery, the vagina and the trocar passage were affected.

CONCLUSIONS

Mesh complication and affected site after prolapse surgery do differ from those after incontinence surgery. The IUGA/ICS classification of mesh complication facilitates the comparison of mesh complication.

Anterior colporrhaphy versus transvaginal mesh for pelvic-organ prolapse

BACKGROUND

The use of standardized mesh kits for repair of pelvic-organ prolapse has spread rapidly in recent years, but it is unclear whether this approach results in better outcomes than traditional colporrhaphy.

METHODS

In this multicenter, parallel-group, randomized, controlled trial, we compared the use of a trocar-guided, transvaginal polypropylene-mesh repair kit with traditional colporrhaphy in women with prolapse of the anterior vaginal wall (cystocele). The primary outcome was a composite of the objective anatomical designation of stage 0 (no prolapse) or 1 (position of the anterior vaginal wall more than 1 cm above the hymen), according to the Pelvic Organ Prolapse Quantification system, and the subjective absence of symptoms of vaginal bulging 12 months after the surgery.

RESULTS

Of 389 women who were randomly assigned to a study treatment, 200 underwent prolapse repair with the transvaginal mesh kit and 189 underwent traditional colporrhaphy. At 1 year, the primary outcome was significantly more common in the women treated with transvaginal mesh repair (60.8%) than in those who underwent colporrhaphy (34.5%) (absolute difference, 26.3 percentage points; 95% confidence interval, 15.6 to 37.0). The surgery lasted longer and the rates of intraoperative hemorrhage were higher in the mesh-repair group than in the colporrhaphy group (P<0.001 for both comparisons). Rates of bladder perforation were 3.5% in the mesh-repair group and 0.5% in the colporrhaphy group (P=0.07), and the respective rates of new stress urinary incontinence after surgery were 12.3% and 6.3% (P=0.05). Surgical reintervention to correct mesh exposure during follow-up occurred in 3.2% of 186 patients in the mesh-repair group.

CONCLUSIONS

As compared with anterior colporrhaphy, use of a standardized, trocar-guided mesh kit for cystocele repair resulted in higher short-term rates of successful treatment but also in higher rates of surgical complications and postoperative adverse events. (Funded by the Karolinska Institutet and Ethicon; ClinicalTrials.gov number, NCT00566917.).

Initial experience with concomitant prolift™ system and tension-free vaginal tape procedures in patients with stress urinary incontinence and cystocele

PURPOSE

The objective of this study is to report our initial experience about the feasibility, effectiveness, and safety of transobturator tension-free vaginal mesh (Prolift™) and concomitant tension-free vaginal tape (TVT) as a treatment of female anterior vaginal wall prolapse associated with stress urinary incontinence (SUI).

MATERIALS AND METHODS

We reviewed the charts of patients who underwent Prolift™ and TVT between April 2009 and March 2010. All patients had a physical examination and staging of cystocele. According to the International Continence Society system 2, 5 and 3 women had stage grade II, III and IV respectively. All the patients underwent pelvic examination 1, 3, 6 month and 1 year after operation and anatomical and functional outcomes were recorded. An anatomic cure after intervention was defined as stage 0 and an improvement was defined as stage I. Anatomic failures were defined as stage II or higher on the last physical examination.

RESULTS

The mean follow-up was 7.1 (1-11) months. Overall success rate of cystocele repair was 90%. The anatomical cure rate of cystocele was 50%. The cystocele repair improved 4 patients, but failed in 1. SUI was cured in all patients. No significant complications including bladder or vessel injury and mesh related erosion occurred. The postoperative complication was transient voiding difficulty (2 cases).

CONCLUSIONS

These preliminary results suggest that Prolift™ and TVT offer a safe and effective treatment for female anterior vaginal wall prolapse and SUI. However, a long-term follow up is necessary in order to support the good result maintenance.

Outcomes after anterior vaginal wall repair with mesh: a randomized, controlled trial with a 3 year follow-up

OBJECTIVE

The objective of the study was to compare anterior colporrhaphy with and without a mesh.

STUDY DESIGN

Two hundred two women with anterior prolapse were assigned to undergo colporrhaphy alone or reinforced with a tailored polypropylene mesh. Before and 2, 12, 24, and 36 months after surgery, the outcome was assessed by examination and standard questions. The primary endpoint was anatomic recurrence of anterior vaginal prolapse. Secondary outcomes were symptom resolution, reoperation, and mesh exposure.

RESULTS

Recurrences of anterior vaginal prolapse were noted in 40 of the 97 (41%) in the colporrhaphy group and 14 of 105 (13%) in the mesh group (P < .0001). The number needed to treat was thus 4. The proportion of symptomatic patients, including those with dyspareunia, did not differ between the groups. The mesh erosion rate was 19%.

CONCLUSION

At 3 year follow-up, anterior colporrhaphy with mesh reinforcement significantly reduced anatomic recurrences of anterior vaginal prolapse, but no difference in symptomatic recurrence were noted and the mesh erosion rate was high. The use of mesh was not associated with an increase in dyspareunia.

Outcomes after anterior vaginal wall repair with mesh: a randomized, controlled trial with a 3 year follow-up

Introduction and hypothesis

The aim of the study was to compare the efficacy and safety of transvaginal trocar-guided polypropylene mesh insertion with traditional colporrhaphy for treatment of anterior vaginal wall prolapse.

Methods

This is a randomized controlled trial in which women with advanced anterior vaginal wall prolapse, at least stage II with Ba ≥ +1 cm according to the Pelvic Organ Prolapse Quantification (POP-Q) classification, were randomly assigned to have either anterior colporrhaphy (n = 39) or repair using trocar-guided transvaginal mesh (n = 40). The primary outcome was objective cure rate of the anterior compartment (point Ba) assessed at the 12-month follow-up visit, with stages 0 and I defined as anatomical success. Secondary outcomes included quantification of other vaginal compartments (POP-Q points), comparison of quality of life by the prolapse quality of life (P-QOL) questionnaire, and complication rate between the groups after 1 year. Study power was fixed as 80 % with 5 % cutoff point (p < 0.05) for statistical significance.

Results

The groups were similar regarding demographic and clinical preoperative parameters. Anatomical success rates for colporrhaphy and repair with mesh placement groups were 56.4 vs 82.5 % (95 % confidence interval 0.068–0.54), respectively, and the difference between the groups was statistically significant (p = 0.018). Similar total complication rates were observed in both groups, with tape exposure observed in 5 % of the patients. There was a significant improvement in all P-QOL domains as a result of both procedures (p < 0.001), but they were not distinct between groups (p > 0.05).

Conclusions

Trocar-guided transvaginal synthetic mesh for advanced anterior POP repair is associated with a higher anatomical success rate for the anterior compartment compared with traditional colporrhaphy. Quality of life equally improved after both techniques. However, the trial failed to detect differences in P-QOL scores and complication rates between the groups.

Efficacy and Safety of "Tension-free" Placement of Gynemesh PS for the Treatment of Anterior Vaginal Wall Prolapse

PURPOSE

To evaluate the efficacy and safety of the tension-free placement of a monofilament polypropylene mesh for the repair of an anterior vaginal wall prolapse (AVWP).

MATERIALS AND METHODS

Women aged ≥ 30 years with an AVWP stage of II or greater were included. Forty-nine women underwent trans-vaginal repair using a Gynemesh™ PS. Forty-six women who had symptomatic stress urinary incontinence received a midurethral sling (MUS). At the 12-month follow-up, evaluations were made for changes in the Pelvic Organ Prolapse Quantification (POP-Q) stage and Pelvic Floor Distress Inventory. Cure was defined as a POP-Q stage of 0 and improvement as a stage of I. Complications were also evaluated.

RESULTS

The cure rate was 71.4%, and the improvement rate was 18.4%. Obstructive/discomfort, irritative, and stress subscale scores of the Urinary Distress Inventory anterior and posterior subscale scores of the POP Distress Inventory and the obstructive subscale score of the Colo-Rectal-Anal Distress Inventory were significantly improved. Thirty-two of the 46 women (69.6%) who received MUS procedures reported no leakage after surgery. Complications were 2 cases of increased intraoperative bleeding and 1 case of vaginal erosion.

CONCLUSIONS

Trans-vaginal repair using a Gynemesh™ PS is a feasible and effective procedure for the treatment of AVWP with no significant complications.

Anatomic outcomes of vaginal mesh procedure (Prolift) compared with uterosacral ligament suspension and abdominal sacrocolpopexy for pelvic organ prolapse: a Fellows' Pelvic Research Network study

OBJECTIVE

The objective of the study was to compare apical support anatomic outcomes following vaginal mesh procedure (VMP) (Prolift) to uterosacral ligament suspension (USLS) and abdominal sacrocolpopexy (ASC).

STUDY DESIGN

This multicenter, retrospective chart review compared apical anatomic success (stage 0 or 1 based on point C or D of the Pelvic Organ Prolapse Quantification), level of vaginal apex (point C or D) 3-6 months after prolapse repair at 10 US centers between 2004 and 2007.

RESULTS

VMP, USLS, and ASC were performed for 206, 231, and 305 subjects respectively. There was no difference in apical success after VMP (98.8%) compared with USLS (99.1%) or ASC (99.3%) (both P = 1.00) 3-6 months after surgery. The average elevation of the vaginal apex was lower after VMP (-6.9 cm) than USLS (-8.05 cm) and ASC (-8.5 cm) (both P < .001)

CONCLUSION

Patients undergoing VMP have similar apical success compared with USLS and ASC despite lower vaginal apex 3-6 month after surgery.