Risk factors for mesh erosion 3 months following vaginal reconstructive surgery using commercial kits vs. fashioned mesh-augmented vaginal repairs

Short term complications in mesh augmented vaginal repair of pelvic organ prolapse are not higher when compared with native tissue repair

INTRODUCTION AND HYPOTHESIS

Accumulating evidence regarding the negative long-term consequences of transvaginal mesh-based procedures for pelvic organ prolapse has led to a sharp decline in mesh-based procedures. We aimed to evaluate the short-term complications of mesh-based procedures for carefully selected patients with pelvic organ prolapse after Food and Drug Administration warnings.

METHODS

A retrospective database review of the ACS NSQIP database was completed to examine 30-day complications including re-operation, prolonged length of stay, blood transfusion, surgical site infection, urinary tract infection, readmission and wound dehiscence in mesh-augmented and native tissue-based transvaginal procedures for pelvic organ prolapse.

RESULTS

A total of 36,234 patients were included in the analysis, with only 7.1% (2574 women) having mesh-augmented repair. Using a multivariable logistical regression analysis adjusting for confounders, we found that the primary composite outcome (re-operation, hospital stay, blood transfusion and surgical site infection) was less common in the mesh group compared with the native tissue repair group (adjusted OR 0.80, CI 0.67-0.95, p = 0.009). The secondary outcomes (urinary tract infection, re-admission and wound dehiscence) were not different between the group.

CONCLUSION

These results suggest that in well-chosen patients, short-term complications are not increased when using transvaginal mesh for pelvic organ prolapse repair.

Concomitant transobturator tape and anterior colporrhaphy versus transobturator subvesical mesh for cystocele-associated stress urinary incontinence

INTRODUCTION AND HYPOTHESIS

Stress urinary incontinence (SUI) and cystocele often occur concomitantly and thus may potentially be treated via a single surgical procedure. This study evaluated the efficacy and safety of concomitant transobturator tape (TOT) with anterior colporrhaphy versus subvesical transobturator mesh (TOM) for cystocele-associated SUI.

METHODS

This prospective, clinical trial included women with cystocele-associated SUI. Patients were randomly allocated into either group I (anterior colporrhaphy with concomitant TOT "in-out" fixation) or group II (implantation of a subvesical four-armed TOM). All patients were followed up at 1, 3, 6, 9, and 12 months postoperatively. Statistical tests were performed to compare the group outcomes based on objective, subjective, and anatomical variables.

RESULTS

There were 81 patients in group I and 83 in group II. Median follow-up duration was 12 months. The demographic data and baseline clinical characteristics of both groups were comparable. There were no significant differences between groups regarding the success rates of SUI and cystocele repair. Groups I and II had similar cure rates of SUI (82.9 and 88.4%, respectively; p = 0.369) and incidences of successful cystocele repair (85.4 and 97.7%, respectively; p = 0.055). No urethral or bladder injuries or mesh erosions were reported. Both groups had comparable postoperative complications, except the greater incidence of micturition difficulty in group I than group II, during the early follow-up (12.2% vs. 0.0%; p = 0.024).

CONCLUSIONS

Transvaginal mesh was not superior to native tissue repair. Anterior colporrhaphy and TOT may be an appropriate alternative to four-armed TOM application for concomitant correction of SUI and cystocele.

Transobturator four arms mesh in the surgical management of stress urinary incontinence with cystocele

Objective

This study aims to evaluate safety and efficacy of four arms polypropylene mesh in the long- term follow-up in the management of stress urinary incontinence (SUI) associated with cystocele.

Material and methods

This prospective study was conducted on 50 female patients with SUI associated with cystocele. Patients underwent placement of transobturator four-arms mesh implants. Stress incontinence was evaluated using cough stress test with and without prolapse reduction, Stamey's grading of SUI, the validated Arabic version of the International Consultation on Incontinence Questionnaire-Short Form and King Health Questionnaire forms. Perioperative parameters evaluated included age, body mass index, grade of SUI, time of procedure, hospital stay after surgery, difference between pre-, and postoperative serum hemoglobin values, and need for blood transfusion. Follow- up visits were planned at 3, 9 and 18 months after surgery.

Results

The mean operative time was 37.4±10.2 (25-60) minutes. Blood transfusion was not required. The mean hospital stay was 30.5±10 (24-48) hrs. Five (10%) patients had fever and urinary tract infections were noticed in five (10%) patients. Two (4%) women had urine retention after catheter removal and vaginal mesh erosion was present in one (2%) patient. Forty (80%) patients were cured from SUI, 8 (16%) patients were improved and 2 (4%) patients failed to respond.

Conclusion

Cystocele associated with SUI can be repaired with transobturator four-arms mesh with promising results, improved quality of life, and tolerable side effects.

Tissue reaction to urogynecologic meshes: effect of steroid soaking in two different mesh models

INTRODUCTION AND HYPOTHESIS

Steroid soaking may decrease mesh-triggered inflammatory reaction in tissue. We aimed to investigate the tissue reaction to a steroid-soaked mesh material and an unsoaked mesh material in the rat model.

METHODS

Neutral and steroid-soaked type I macroporous polypropylene (PP) monofilament and polyvinylidene fluoride (PVF) mesh materials were implanted on the rectus abdominis muscle of 20 mature Wistar albino rats. Animals were divided into four groups: PP mesh with steroid (PP-S), PP mesh without steroid, PVF mesh with steroid (PVF-S), and PVF mesh without steroid. The rats were killed after 12 weeks, and histologic, immunohistochemical and electron microscopic examinations were performed. For immunohistochemical analysis, polyclonal rabbit anti-mouse CD3, rabbit anti-mouse CD68, rabbit anti-mouse CD15, and rabbit anti-mouse CD34 antibodies were used for the detection of lymphocytes, macrophages, polymorphonuclear leukocyte foreign body giant cells, and fibromyocyte stem cells, respectively. Samples were stained with hematoxylin and eosin for the histologic evaluation of inflammation and with Masson's trichrome stain for the evaluation of collagen deposition. Pore size and mesh ultrastructure were evaluated by electron microscopy.

RESULTS

Expression of CD3 was lower in the PVF, PVF-S and PP-S groups, and expression of CD34 was higher in the PVF-S and PP-S groups than in the PP groups (p < 0.05). Collagen deposition was lower in the PVF, PVF-S and PP-S groups (p < 0.05). Histologically, the intensity of inflammation was lower in the PVF-S and PP-S groups than in the PP mesh group (p < 0.05). There were no significant differences among the groups in terms of pore size and mesh ultrastructure on electron microscopic examination (p > 0.05).

CONCLUSIONS

PVF mesh induces less inflammation than PP mesh, and in both mesh types steroid soaking further decreases inflammation without changing the pore size.

Risk factors for vaginal mesh exposure after mesh-augmented anterior repair: a retrospective cohort study

OBJECTIVES

The aim of this study is to identify risk factors for vaginal mesh exposure after mesh-augmented repair of anterior prolapse.

METHODS

We performed a retrospective cohort study of all patients who had mesh-augmented anterior repair by 1 surgeon between January 2007 and February 2012. Data were extracted from medical records. The primary outcome was the rate of anterior or apical vaginal mesh exposure. Both univariate and multivariate analyses were performed.

RESULTS

A total of 201 subjects were included. The mean (SD) follow-up was 14.3 (12.4) months. All cases were done using a type 1 macroporous monofilament polypropylene mesh. The overall mesh exposure rate was 8.5% (17/201). Univariate analysis showed a statistically significant positive association between exposure rates and the following risk factors: lower body mass index (BMI) (P = 0.016), menopause in combination with the use of hormone replacement therapy (P = 0.023), midline sagittal vaginal incision (compared with distal transverse incision) (P = 0.026), concurrent total hysterectomy (P < 0.001), surgery time (P = 0.002), and worse apical prolapse at baseline (P = 0.007). After multivariate analysis using logistic regression, only BMI (P < 0.001) and concomitant total hysterectomy (odds ratio, 48; P < 0.001) remained relevant. The exposure rate was 23.5% (16/68) when concomitant hysterectomy was performed compared with 0.8% (1/133) when no hysterectomy was done. Exposure rates stratified by BMI class were 12.9% (8/62) for BMI less than 25 kg/m, 9.5% (8/84) for BMI of 25 to 29.9 kg/m, 3.1% (1/32) for BMI of 30 to 34.9 kg/m, and 0% (0/23) for BMI greater than or equal to 35 kg/m.

CONCLUSIONS

Concomitant total hysterectomy is an independent risk factor for mesh exposure after mesh-augmented anterior repair, whereas BMI may negatively correlate with exposure rates.

Complications of pelvic organ prolapse surgery and methods of prevention

INTRODUCTION AND HYPOTHESIS

The aim was to review complications associated with pelvic organ prolapse surgery.

METHODS

Every 4 years and as part of the Fifth International Collaboration on Incontinence we reviewed the English-language scientific literature after searching PubMed, Medline, Cochrane library and Cochrane database of systematic reviews, published up to January 2012. Publications were classified as level 1 evidence (randomised controlled trials [RCT] or systematic reviews), level 2 (poor quality RCT, prospective cohort studies), level 3 (case series or retrospective studies) and level 4 (case reports). The highest level of evidence was utilised by the committee to make evidence-based recommendations based upon the Oxford grading system. Grade A recommendation usually depends on consistent level 1 evidence. Grade B recommendation usually depends on consistent level 2 and/or 3 studies, or "majority evidence" from RCTs. Grade C recommendation usually depends on level 4 studies or "majority evidence from level 2/3 studies or Delphi processed expert opinion. Grade D "no recommendation possible" would be used where the evidence is inadequate or conflicting and when expert opinion is delivered without a formal analytical process, such as by Delphi.

RESULTS AND CONCLUSIONS

Transvaginal mesh has a higher re-operation rate than native tissue vaginal repairs (grade A). If a synthetic mesh is placed via the vaginal route, it is recommended that a macroporous polypropylene monofilament mesh should be used. At sacral colpopexy mesh should not be introduced or sutured via the vaginal route and silicone-coated polyester, porcine dermis, fascia lata and polytetrafluoroethylene meshes are not recommended as grafts. Hysterectomy should also be avoided (grade B). There is no evidence to recommend routine local or systemic oestrogen therapy before or after prolapse surgery using mesh. The first cases should be undertaken with the guidance of an experienced surgeon in the relevant technique (grade C). Expert opinion suggests that by whatever the surgical route pre-operative urinary tract infections are treated, smoking is ceased and antibiotic prophylaxis is undertaken. It is recommended that a non-absorbable synthetic mesh should not be inserted into the rectovaginal septum when a rectal injury occurs. The placement of a non-absorbable synthetic mesh into the vesicovaginal septum may be considered after a bladder injury has been repaired, if the repair is considered to be satisfactory. It is possible to perform a hysterectomy in association with the introduction of a non-absorbable synthetic mesh inserted vaginally, but this is not recommended routinely.

Prevention of complications related to the use of prosthetic meshes in prolapse surgery: guidelines for clinical practice

The objective of the study was to provide guidelines for clinical practice from the French College of Obstetrics and Gynecology (CNGOF), based on the best evidence available, concerning adverse events related to surgical procedures involving the use of prosthetic meshes. French and English-language articles from Medline, PubMed, and the Cochrane Database were searched, using key words (mesh; pelvic organ prolapse; cystocele; rectocele; uterine prolapse; complications; adverse event; sacral colpopexy; extrusion; infection). As with any surgery, recommendations include perioperative smoking cessation (Expert opinion) and compliance with the prevention of nosocomial infections (regulatory recommendation). There is no evidence to recommend routine local or systemic estrogen therapy before or after prolapse surgery using mesh, regardless of the surgical approach (Grade C). Antibiotic prophylaxis is recommended, regardless of the approach (Expert opinion). It is recommended to check for pre-operative urinary tract infection and treat it (Expert opinion). The first procedure should be undertaken under the guidance of a surgeon experienced in the relevant technique (Grade C). It is recommended not to place a non-absorbable synthetic mesh into the rectovaginal septum when a rectal injury occurs (Expert opinion). Placement of a non-absorbable synthetic mesh into the vesicovaginal septum may be considered after suturing of a bladder injury if the suture is considered to be satisfactory (Expert opinion). If a synthetic mesh is placed by vaginal route, it is recommended to use a macroporous polypropylene monofilament mesh (Grade B). It is recommended not to use polyester mesh for vaginal surgery (Grade B). It is permissible to perform hysterectomy associated with the placement of a non-absorbable synthetic mesh placed by the vaginal route but this is not routinely recommended (Expert opinion). It is recommended to minimize the extent of the colpectomy (Expert opinion). The laparoscopic approach is recommended for sacral colpopexy (Expert opinion). It is recommended not to place and suture meshes by the vaginal route when a sacral colpopexy is performed (Grade B). It is recommended not to use silicone-coated polyester, porcine dermis, fascia lata, and polytetrafluoroethylene meshes (Grade B). It is recommended to use polyester (without silicone coating) or polypropylene meshes (Grade C). Suture of the meshes to the promontory can be performed using thread/needle or tacks (Grade C). Peritonization is recommended to cover the meshes (Grade C). If hysterectomy is required, it is recommended to perform a subtotal hysterectomy (Expert opinion). Implementation of this guideline should decrease the prevalence of complications related to surgical procedures involving the use of prosthetic meshes.

Beyond the complications: medium-term anatomical, sexual and functional outcomes following removal of trocar-guided transvaginal mesh. A retrospective cohort study

INTRODUCTION AND HYPOTHESIS

The aims of this study were to assess the anatomical, sexual and functional outcomes of women undergoing surgical intervention for complications of the trocar-guided transvaginal mesh (TVM) procedure.

METHODS

This was a retrospective analysis of a clinical database of women who had developed a complication following a TVM procedure. This included dyspareunia, mesh erosion, urinary symptoms, mesh contraction and prolapse recurrence. Pre- and post-operatively, we assessed the women for prolapse, stress incontinence, urgency, defecatory difficulty, digitation, pain, dyspareunia and apareunia. We also recorded the Pelvic Organ Prolapse Quantification (POP-Q) score. The TVM was removed and a Biodesign graft was used in the majority of cases to prevent further prolapse. Follow-up was at 6 weeks, 6 months, 1 and 2 years.

RESULTS

In our cohort of 21 women, 18 required surgery for pain and/or dyspareunia; 20 women had reached the 6-week follow-up at the time of analysis. At 6 weeks, two women still had pain and required a second intervention. Fifteen women had reached a 6-month follow-up and only one woman had persistent pain requiring repeat surgery. Of the 15 women, 7 were sexually active and in 6 cases the dyspareunia had resolved completely with 1 woman retaining an element of pain at intercourse. Six women had been seen at 12 months and all four of the sexually active women had no dyspareunia. There were no symptoms relating to prolapse in any of the women at 6 weeks, 6, 12 or 24 months.

CONCLUSIONS

We report satisfactory outcomes following removal of a complicated TVM kit.

Mesh complications in female pelvic floor reconstructive surgery and their management: A systematic review

We reviewed the incidence, predisposing factors, presentation and management of complications related to the use of synthetic mesh in the management of stress urinary incontinence and pelvic organ prolapse repair. Immediate complications, such as bleeding, hematoma, injury to adjacent organs during placement of mesh and complication of voiding dysfunction are not discussed in this review, since they are primarily related to technique. A PubMed search of related articles published in English was done from April 2008 to March 2011. Key words used were urinary incontinence, mesh, complications, midurethral sling, anterior prolapse, anterior vaginal repair, pelvic organ prolapse, transvaginal mesh, vault prolapse, midurethral slings, female stress urinary incontinence, mesh erosion, vaginal mesh complications, and posterior vaginal wall prolapse. Since there were very few articles dealing with the management of mesh-related complications in the period covered in the search we extended the search from January 2005 onwards. Articles were selected to fit the scope of the topic. In addition, landmark publications and Manufacturer and User Facility Device Experience (MAUDE) data (FDA website) were included on the present topic. A total of 170 articles were identified. The use of synthetic mesh in sub-urethral sling procedures is now considered the standard for the surgical management of stress urinary incontinence. Synthetic mesh is being increasingly used in the management of pelvic organ prolapse. While the incidence of extrusion and erosion with mid-urethral sling is low, the extrusion rate in prolapse repair is somewhat higher and the use in posterior compartment remains controversial. When used through the abdominal approach the extrusion and erosion rates are lower. The management of mesh complication is an individualized approach. The choice of the technique should be based on the type of mesh complication, location of the extrusion and/or erosion, its magnitude, severity and potential recurrence of pelvic floor defect.

Urogenital complaints and female sexual dysfunction. Part 2

INTRODUCTION

Female sexual dysfunction (FSD) is common in women with urogenital disorders that occur as a result of pelvic floor muscle and fascial laxity.

AIM

Provide a comprehensive review of FSD as it relates to common urogenital disorders including pelvic organ prolapse (POP) and stress urinary incontinence (SUI) and to discuss the impact of the surgical repair of these disorders on sexual function.

METHODS

Systematic search of the medical literature using a number of related terms including FSD, POP, SUI, surgical repair, graft augmentation, complications, and dyspareunia.

MAIN OUTCOME MEASURES

Review of the medical literature to identify the relation between FSD and common urogenital disorders in women and to describe appropriate treatment strategies to improve quality of life (QOL) and sexual function.

RESULTS

FSD is common in women with POP and SUI. Treatment options for POP and SUI include behavioral, pharmacological, and surgical methods which can also affect sexual function.

CONCLUSIONS

Sexual dysfunction is a common, underestimated complaint in women with POP and SUI. Treatment should be tailored toward improving sexual function and QOL. Surgical correction is generally beneficial but occasionally can result in negative alterations in sexual function. Patient selection and methods used for surgical repair are important factors in determining anatomical and functional success.