Failure of allograft suburethral slings

Female Pelvic Medicine and Reconstructive Surgery challenges on behalf of the Collaborative Research in Pelvic Surgery Consortium: managing complicated cases : Series 5: management of recurrent stress urinary incontinence after midurethral sling exposure

This case presents the work-up and management of a patient requesting surgical intervention for recurrent stress urinary incontinence after previous excision of a portion of her midurethral sling because of mesh exposure. Four international experts provide their approach to this complex case. There is little consensus regarding further surgery in a patient who has required mesh excision. Treatment by fascial sling was commonly considered and the literature review outlines the pros and cons of autologous fascia versus donor fascia for this specific case.

Managing female pelvic floor disorders: a medical device review and appraisal

Pelvic floor disorders (PFDs) will affect most women during their lifetime. Sequelae such as pelvic organ prolapse, stress urinary incontinence, chronic pain and dyspareunia significantly impact overall quality of life. Interventions to manage or eliminate symptoms from PFDs aim to restore support of the pelvic floor. Pessaries have been used to mechanically counteract PFDs for thousands of years, but do not offer a cure. By contrast, surgically implanted grafts or mesh offer patients a more permanent resolution but have been in wide use within the pelvis for less than 30 years. In this perspective review, we provide an overview of the main theories underpinning PFD pathogenesis and the animal models used to investigate it. We highlight the clinical outcomes of mesh and grafts before exploring studies performed to elucidate tissue level effects and bioengineering considerations. Considering recent turmoil surrounding transvaginal mesh, the role of pessaries, an impermanent method, is examined as a means to address patients with PFDs.

Pubovaginal sling materials and their outcomes

Stress urinary incontinence (SUI) is the most common type of urinary incontinence, and approximately 200 different methods have been described for its surgical management. A better understanding of the pathophysiology of SUI has led to the development of surgical therapies focused on creating a strong suburethral supportive layer and urethral resistance. The most important advantage of the pubovaginal sling (PVS) procedure is that it restores urethral resistance during stress maneuvers to prevent incontinence, while improving urethral coaptation at rest and allowing for spontaneous micturition. Various autologous, allograft, xenograft and synthetic materials have been used for the PVS. The autologous PVS procedure for the treatment of SUI offers the highest success rate and is the most commonly used PVS surgical method. Unlike xenograft and allograft materials, the autologous procedure does not result in a tissue reaction and is associated with a low rate of material-related complications.

Update of AUA guideline on the surgical management of female stress urinary incontinence

PURPOSE

We updated the 1997 American Urological Association guideline on female stress incontinence.

MATERIALS AND METHODS

MEDLINE searches of English language publications from 1994 and new searches of the literature published between December 2002 and June 2005 were performed using identified MeSH terms. Articles were selected for the index patient defined as the otherwise healthy woman who elected to undergo surgery to correct stress urinary incontinence or the otherwise healthy woman with incontinence and prolapse who elected to undergo treatment for both conditions.

RESULTS

A total of 436 articles were identified as suitable for inclusion in the meta-analysis, and an additional 155 articles were suitable for complications data only due to insufficient followup of efficacy outcomes in the latter reports. Surgical efficacy was defined using outcomes pre-specified in the primary evidence articles. Urgency (resolution and de novo) was included as an efficacy outcome due to its significant impact on quality of life. The primary efficacy outcome was resolution of stress incontinence measured as completely dry (cured/dry) or improved (cured/improved). Complications were analyzed similarly to the efficacy outcomes. Subjective complications (pain, sexual dysfunction and voiding dysfunction) were also included as a separate category.

CONCLUSIONS

The surgical management of stress urinary incontinence with or without combined prolapse treatment continues to evolve. New technologies have emerged which have impacted surgical treatment algorithms. Cystoscopy has been added as a standard component of the procedure during surgical implantation of slings.

A comparative study evaluating the in vivo incorporation of biological sling materials

OBJECTIVES

To comparatively investigate biological tissues that are clinical products currently used for implantation in urological reconstruction. Specifically, we examined biological materials in vivo and evidence regarding the tissue response observed. Biological tissues are widely used in urological surgeries to treat conditions such as pelvic organ prolapse and stress urinary incontinence.

METHODS

Histologic data from 4 biological sling materials, that is, small intestinal submucosa (SIS), cadaveric fascia lata, cadaveric dermis, and porcine dermis, implanted within mice (n = 64) were evaluated at 2, 4, 8, and 12 weeks. Recovered tissue was assessed by several biocompatibility parameters such as capsule formation (collagen deposition), cellular number, cell morphology, and angiogenesis.

RESULTS

Data provide a scientific depiction of the cellular response to these biomaterials through a 12-week evaluation. SIS had a significantly higher level of angiogenesis and cell infiltrate as compared with all other material tested. Collectively, the data suggest that SIS has improved biocompatibility over other tested materials.

CONCLUSIONS

This study compared SIS with other biological tissues in an animal model and was found to have superior biocompatibility as seen in humans. This may be helpful for clinicians while selecting a particular biological material. The study provides evidence of the varying stages of remodeling each implant, with hopes to better understand the material response in vivo.

Cadaveric fascia lata versus intravaginal slingplasty for the pubovaginal sling: surgical outcome, overall success and patient satisfaction rates

BACKGROUND

A wide variety of surgical procedures has been used to treat female stress urinary incontinence (SUI). The purpose of this study was to compare cadaveric fascia lata (CFL) sling with intravaginal slingplasty (IVS) in the surgical treatment of SUI.

METHODS

One hundred and thirty-nine women with SUI were randomly assigned to either CFL sling (n = 67) or IVS (n = 72). Concomitant urinary urge incontinence was present in 49 patients (73%) in the CFL sling and 44 patients (61%) in the IVS group. Daily mean pad usage was 4.1 +/- 3.5 in the CFL sling and 2.9 +/- 1.7 in the IVS group. The objective cure rate was evaluated by the pad test, and patient satisfaction rate was assessed by a subjective questionnaire.

RESULTS

The surgical results of both procedures with a follow-up 12 months were documented. The overall success rate was 79% in the CFL sling and 70.8% in the IVS (p = 0.261). In contrast patient satisfaction rates were 82 and 87.5%, respectively (p = 0.210). Comparison of the CFL sling with IVS showed persistent urinary urge incontinence in 67 and 25% (p = 0.0001) and de novo urinary urge incontinence in 22 and 6.9%, respectively (p = 0.009). The groups did not differ significantly with respect to intraoperative and postoperative complications.

CONCLUSIONS

There is no statistical difference in the overall success, satisfaction and complication rates in either group. In our series, both procedures were found to be effective, durable and significantly improved quality of life in patients with SUI but long-term results are awaited.

Comparison of solvent-dehydrated allograft dermis and autograft rectus fascia for pubovaginal sling: questionnaire-based analysis

OBJECTIVES

To evaluate the efficacy of pubovaginal sling using human cadaveric dermis processed by solvent dehydration and compare results to those of another group in which autograft rectus fascia was used.

MATERIAL AND METHODS

The efficacy of autologous rectus fascia (group 1, n=25) or solvent-dehydrated cadaveric dermis (group 2, n=24) for pubovaginal sling were compared in women with stress urinary incontinence (SUI). Surgical outcome, patient satisfaction and quality of life was assessed by the urogenital distress inventory (UDI-6) and the incontinence impact questionnaire (IIQ-7).

RESULTS

Mean follow-up for patients in group 1 and group 2 were 18 and 13 months, respectively. Our questionnaire-based assessment revealed that SUI was either cured or improved in a total of 21 (84%) patients in group 1 and 19 (79%) patients in group 2. No statistically significant difference was found for the overall success (P<0.05) and no major complications were encountered in both groups.

CONCLUSIONS

Use of allograft dermis as an alternative to autologous rectus fascia for pubovaginal sling had comparable improvement in patient satisfaction and quality of life at intermediate term.

Time-dependent variations in inflammation and scar formation of six different pubovaginal sling materials in the rabbit model

OBJECTIVES

To provide pathologic evidence, using six different sling materials, of the findings from rabbit model studies demonstrating loss of tensile strength and stiffness in porcine and cadaveric sling materials.

METHODS

Ten rabbits randomized into two survival groups (6 and 12 weeks of age) each had human cadaveric fascia, porcine dermis, porcine small intestine submucosa, polypropylene mesh, and autologous fascia implanted on their anterior rectus fascia. At harvest, hematoxylin-eosin and immunohistochemical staining for CD3, CD20, and MIB-I were performed. A pathologist unaware of the content of the slides quantified the degree of inflammation and fibrosis of each.

RESULTS

Significant differences were found for inflammation (P = 0.016), eosinophil infiltrate (P = 0.035), and inflammatory rind (P = 0.027) at 12 weeks, with polypropylene mesh having the lowest degree. At 12 weeks, differences were found in the presence of fibrosis/scar formation (P = 0.010) and degree of fibrosis/scar (P = 0.009). Although polypropylene mesh, cadaveric fascia, and porcine dermis all demonstrated a high presence of fibrosis/scar, polypropylene mesh had the greatest overall degree of scar formation at 12 weeks.

CONCLUSIONS

The inflammation with the cadaveric fascia and porcine materials may cause rapid clinical deterioration compared with autologous fascia and polypropylene mesh. These data provide a possible explanation for prior biomechanical studies demonstrating variations in tensile strength and stiffness of the different materials. The fibrosis and scarring noted with polypropylene mesh may also contribute to a more lasting repair.

Comparison of autologous rectus fascia and cadaveric fascia in pubovaginal sling continence outcomes

OBJECTIVE

The purpose of this study was to compare autologous versus cadaveric grafts in pubovaginal slings.

STUDY DESIGN

Women who had pubovaginal slings from 1994 to 2003 completed history, questionnaires, prolapse staging, and cough stress testing. Failure was defined by recurrent urinary incontinence symptoms and reoperation for stress incontinence. Group differences were evaluated using Student t test or chi-square test. The log-rank test was used to evaluate time to failure between the groups.

RESULTS

Of 303 women enrolled, 153 had autologous and 150 had cadaveric grafts. Regular urine leakage (39.6% vs 28.3%, P = .04) and reoperation for stress incontinence (12.7% vs 3.3%, P = .003) occurred more in the cadaveric versus autologous group, respectively. Adjusting for differing follow-up times, the cadaveric versus autologous group experienced higher rates of urinary incontinence (16 vs 5 per 100 women-years, P < .0001) and higher rates of reoperation (4 vs 1 per 100 women-years, P < .0003).

CONCLUSION

Autologous grafts used in pubovaginal slings have superior continence outcomes compared with cadaveric fascia.

Suitability of different sling materials for the treatment of female stress urinary incontinence

Stress urinary incontinence (SUI) is defined as leakage of urine with a sudden increase in intra-abdominal pressure, such as that seen with laughing, lifting, or changing position, without a concomitant rise in detrusor (bladder-generated) pressure. The proposed mechanism of SUI is that an increase in intra-abdominal pressure resulting from various activities causes the bladder pressure to rise above the urethral pressure. The pubovaginal sling remains the standard treatment for female SUI in the US. The market has been flooded with innumerable sling materials. This review discusses the currently available sling materials, surgical approaches, and clinical outcomes data. Long-term data on efficacy is lacking, but early results with new materials and delivery techniques indicate that excellent cure rates with minimal morbidity and high patient satisfaction may be achievable.

[Urinary complications in sub-urethral sling procedures]

INTRODUCTION

Urinary complications following sub urethral sling procedures are common, and management of these complications continue to be discussed.

METHODS

The literature available on Medline/PubMed, relating to urinary complications associated with suburethral sling procedures, was reviewed.

RESULTS

Bladder perforation, which occurs with an incidence of 5.7% in tension-free vaginal tape procedure, requires repositioning of the sling, but does not cause any increase in postoperative morbidity. The trans-obturator approach appears to decrease this risk. Urethral perforation, which is uncommon (0.4-1%), is a contraindication to maintenance of the sling. Bladder erosion is rare, requiring resection of the mesh with a combined abdominal and cystoscopic approach. Urethral mesh erosion (0.07% to 1.5%) also requires surgical sling removal, but few patients remain continent because this removal requires a large urethrolysis (recurrence rate of incontinence is 66% following removal of the sling). Bladder outlet obstruction occurs frequently after sub-urethral procedures. When complete obstruction is clinically evident 2 days after a sub-urethral sling procedure, immediate reintervention is performed with a rapid return to normal voiding. Recurrence rate of stress incontinence is less than 30% following reintervention.

Initial experience with rectocele repair using nonfrozen cadaveric fascia lata interposition

OBJECTIVES

To describe a rectocele repair reinforced with solvent-dehydrated, gamma-irradiated, human fascia lata and report our early results with a technique we are confident will have a greater, more durable success rate, with a lower incidence of dyspareunia, than the classic repair.

METHODS

A total of 73 patients, aged 31 to 86 years, with symptomatic (stool trapping and/or vaginal/perineal splinting or postural modifications to facilitate stool evacuation) rectoceles underwent a site-specific repair reinforced with cadaveric fascia. Perioperative questionnaires, retrospective chart review, and telephone interview by a blinded third-party reviewer and physical examination was conducted. Issues thought to be relevant to the rectocele repair were assessed.

RESULTS

Of the 73 patients, 62 responded to the postoperative questionnaire and 50 underwent physical examination. The mean follow-up was 13.7 months (range 6 to 23). Of the 62 patients, 52 (93.6%) denied postoperative stool trapping requiring vaginal/perineal splinting. Of the 39 sexually active patients, 4 (10.3%) experienced de novo dyspareunia. Minor complications were seen in 15 patients (24%). One developed a symptomatic enterocele.

CONCLUSIONS

Interposition of cadaveric fascia lata avoids dependence on weakened native rectovaginal support to facilitate the rectocele repair. Our technique uses fascial interposition, rather than obliteration of the defect, preventing vaginal narrowing, and should thereby decrease the incidence of dyspareunia. Patient symptom improvement and satisfaction rates were competitive with those after traditional rectocele repair. Follow-up is ongoing with the hope that the fascial reinforcement will translate into more durable results.

Suburethral sling materials: best outcome with autologous tissue

OBJECTIVE

This study was undertaken to assess the outcome of suburethral slings by type of sling material.

STUDY DESIGN

A retrospective review of women who underwent a suburethral sling between January 1997 and January 2003 with autograft, allograft or xenograft materials. Objective failure was defined as urinary leakage with cough stress testing at any time after 3 months, postoperatively. Objective cure was defined as no leakage with a standing cough stress test with at least 200 mL bladder volume at a minimum of 12 months postoperatively. Data were analyzed using Student t, Wilcoxon rank sum, and Kaplan-Meier survival tests.

RESULTS

A total of 241 women were included in this study: 78 received autograft, 80 received allograft, and 83 received xenograft. Objective failure was 36% and 46% for allograft and xenograft, respectively compared with 13% for autograft (P < .001).

CONCLUSION

Autograft has a significantly higher cure rate when used for suburethral slings.

Solvent-dehydrated cadaveric dermis: a new allograft for pubovaginal sling surgery

AIM

The aim of this study was to evaluate the efficacy of solvent-dehydrated cadaveric dermis in pubovaginal sling surgery for the first time in the literature.

METHODS

Twenty-five women with stress urinary incontinence underwent pubovaginal sling surgery using 2 x 12 cm allograft dermis. Preoperatively, all patients were evaluated by a detailed urogynecologic evaluation, voiding diary, pelvic examination and urodynamic investigation. Outcome was assessed by the Urogenital Distress Inventory short form and standardized follow-up questionnaires.

RESULTS

Twenty (80%) patients were cured of stress incontinence symptoms. Seventeen wore no pad and three reported occasional stress urinary incontinence and used no or one pad at a mean follow up of 12 months. Five (20%) patients in our series experienced the same amount of leakage as before the surgery. Seventy-six percent of the patients indicated that urinary incontinence was no longer negatively affecting their daily life and were satisfied with the procedure.

CONCLUSIONS

Questionnaire-based assessment of outcome suggests that solvent-dehydrated cadaveric dermis is effective in the treatment of stress urinary incontinence. However, larger and comparative prospective studies with long-term results and randomized comparison of tissue preparation techniques are warranted.

A new technique combining both polypropylene and vaginal wall sling procedures: can it minimize the risk of urethral and vaginal erosion occurring with synthetic materials?

We describe a new technique combining in situ vaginal wall and polypropylene mesh slings that may decrease potential erosive complications caused by synthetic materials. A folded mucosal patch harboring the polypropylene mesh was placed between mid-urethra and bladder neck. Using this technique, 12 consecutive women (age range 44-66 years) were operated. Preoperative evaluation included a detailed history, pelvic examination, stress test, cystourethroscopy, basic urodynamic evaluation (cystometry, Valsalva leak point pressure measurement), and urine culture. Based on these evaluations, three, seven, and two patients had type I, II, and III stress urinary incontinence, respectively. A paraurethral cyst excision was carried out in one patient and anterior colporrhaphy in four patients during the same operation. No ischemia or sloughing at the operation site occurred in any case. Pelvic examination was repeated in all patients after 3 and 6 months of follow-up and symptoms were determined after 12 months of follow-up in eight patients by telephone interview. Average follow-up was 10 months (range: 6-14 months). None of the patients were incontinent, or complained of sexual dysfunction or erosive complications after 1 year. Since there are two distinct barriers between the sling and both urethra and vagina, our technique covers all advantages of a sling procedure with synthetic materials and avoids the risk of urethral and vaginal erosion. The other advantage of this technique is the concomitant utilization of the vaginal wall as sling material.

Histologic evaluation of human cadaveric fascia lata in a rabbit vagina model

The purpose of this study was to evaluate the histologic response of human cadaveric fascia lata after vaginal implantation. Freeze-dried, gamma-irradiated cadaveric fascia lata from three lots was implanted between the rectovaginal membrane and vaginal epithelium in New Zealand white rabbits. Rabbits were killed at 2, 4, 8, and 12 weeks after implantation. At necropsy, gross findings were described and specimens for routine cultures were taken. Histologic evaluation determined graft integrity, neovascularization, inflammatory response, and host tissue incorporation. Nine rabbits were available for histologic analysis and 14 for gross and microbiologic analysis. Vaginal erosions occurred with three grafts. The remainder were adherent to the surrounding tissues. Erosion was associated with bacterial colonization of the graft. Autolysis of one graft occurred at 4 weeks. Over time, the inflammatory response decreased and neovascularization increased; by 12 weeks, the graft collagen was replaced by host collagen. Cadaveric fascia lata serves as scaffolding for host tissue incorporation with replacement by host collagen.

Functional and anatomic outcome after transvaginal rectocele repair using collagen mesh: a prospective study

PURPOSE

This study was designed to evaluate rectocele repair using collagen mesh.

METHODS

32 female patients underwent surgical repair using collagen mesh. Outcome was assessed in 29 patients and preoperative assessment included standardized questionnaire, clinical examination, and defecography. At the six-month follow-up, patients answered a standardized questionnaire and underwent clinical examination. At the 12-month follow-up, patients answered a standardized questionnaire, underwent clinical examination, and defecography.

RESULTS

Preoperatively, 26 patients had a Stage II and 3 patients had a Stage III rectocele. At the 6-month follow-up, five patients had rectocele > or = Stage II (P < 0.001) and at the 12-month follow-up, seven patients had rectocele > or = Stage II (P < 0.001) at clinical examination. At the preoperative defecography, all patients presented a rectocele. At the 12-month defecography, 14 patients had no rectocele (P < 0.001) and 15 had a rectocele. At the six-month follow-up, there was a significant decrease in rectal emptying difficulties, need of digital support of the posterior vaginal wall at defecation, and defecation frequency. At the 12-month follow-up, symptom improvement remained, but was less pronounced.

CONCLUSIONS

Rectocele repair using collagen mesh improved anatomic support, but there is a substantial risk for recurrence with unsatisfactory anatomic and functional outcome one year after surgery. Rectocele repair using mesh was not associated with an increased risk of dyspareunia. Rectocele repair using biomaterial mesh reinforcement needs further evaluation before adopted into clinical practice.

Histopathologic changes of porcine dermis xenografts for transvaginal suburethral slings

OBJECTIVE

The purpose of this study was to examine the histopathologic changes of HMDI (Hexamethylene di-isocyanate) cross-linked porcine dermis grafts used for suburethral sling surgery.

STUDY DESIGN

Twelve patients underwent reoperation with graft removal for urinary retention or recurrent stress urinary incontinence after transvaginal sling surgery. Tissue specimens were available for pathologic evaluation in 7 patients. Graft specimens underwent histologic preparation including hematoxylin and eosin staining. A single pathologist reviewed the slides blinded to clinical outcomes.

RESULTS

Histopathologic analyses revealed only limited collagen remodeling, and evidence of a foreign body type reaction was present in some specimens. In cases of recurrent stress incontinence, implants appeared to be completely replaced by dense fibroconnective tissue and moderate neovascularization without evidence of inflammation or graft remnants.

CONCLUSION

HMDI cross-linked porcine dermal collagen implants result in variable tissue reactions that may have unpredictable clinical outcomes in different patients, raising questions about the overall tolerability and efficacy of these grafts in pelvic reconstructive surgery.

Anatomical outcome and quality of life following posterior vaginal wall prolapse repair using collagen xenograft

The aim of this study was to evaluate quality of life, sexual function, and anatomical outcome after posterior vaginal wall prolapse repair using a collagen xenograft. Thirty-three patients were evaluated preoperatively and at 6 and 12 months follow-up (FU). Quality of life and sexual function were assessed using a self-reported questionnaire. Prolapse staging was performed using the pelvic organ prolapse quantification system (POPQ). Preoperatively 3 patients had stage I, 26 patients stage II, and 4 patients stage III prolapse of the posterior vaginal wall. Prolapse of the posterior vaginal wall > or = stage II was observed in 7 patients (21%) at the 6-month FU and in 13 patients (39%) at the 12-month FU. Mean point Bp was reduced from -1.1 preoperatively to -2.5 at 6 months FU (p < 0.01) and -1.8 at 12 months FU (p < 0.01). Previous abdominal surgery was associated with a less favorable anatomical outcome (odds ratio: 2.0, 95% confidence interval: 1.5-3.8). There were no significant changes in sexual function or dyspareunia during the 1-year FU. Preoperatively 76% of the patients reported a negative impact on quality of life as a result of genital prolapse. There was a significant improvement in several variables associated with quality of life at 6 and 12 months FU. Posterior vaginal wall prolapse repair using a collagen xenograft was associated with an unsatisfying anatomical outcome at 1-year FU although several quality of life-associated variables affecting psychosocial function were improved. Improvement was not restricted to postoperative restoration of vaginal topography, and previous surgery had a negative effect on anatomical outcome.

Synthetic sling options for stress urinary incontinence

In the past decade, sling surgery has become the preferred technique for the management of female stress urinary incontinence. A greater understanding of the pathogenesis of stress urinary incontinence and a greater durability and effectiveness for sling surgery has allowed this technique to become the benchmark for treatment of female stress urinary incontinence. As a consequence, a multitude of products have been developed using various techniques and materials to perform sling surgery. This article reviews the materials and techniques available and the complications associated with each. Most importantly, the outcomes are discussed so that the readers can best understand the impact of these surgeries on our patients.

A Minimally Invasive Technique for Harvesting Autologous Fascia Lata for Pubo-Vaginal Sling Suspension

OBJECTIVE

To access donor site morbidity associated with harvesting of autologous fascia lata for pubo-vaginal sling suspension in treating stress urinary incontinence.

METHODS

A retrospective study was performed of 25 female patients who underwent pubo-vaginal sling suspension for stress urinary incontinence. Autologous fascia lata strip was harvested in all patients with a minimally invasive approach using a fascial stripper. Demographic, intraoperative, and immediate postoperative data were recorded to determine the incidence of complications. Follow-up data was reviewed for documentation of long-term complications.

RESULTS

Adequate length of fascia lata was harvested in all of our patients. Ten patients required a single 2 cm incision just above lateral femoral epicondyle to harvest fascia lata. Twelve patients needed two incisions and remaining three required three incisions. There were no intraoperative complications. There was no incidence of wound related infection or hematoma in the immediate post-operative period. On follow-up no patient had bothersome problems pertaining to the site of graft harvesting.

CONCLUSIONS

Harvesting fascia lata with fascial stripper is a minimally invasive which is easy to learn and provides an excellent fascial strip with minimal morbidity.

Surgical outcome of abdominal sacrocolpopexy with synthetic mesh versus abdominal sacrocolpopexy with cadaveric fascia lata

Nineteen women who had an abdominal sacrocolpopexy (ASC) with synthetic mesh and 18 women who had an ASC with freeze-dried, irradiated cadaveric fascia lata returned for blinded pelvic organ prolapse quantification (POPQ) examinations. The mean relative vaginal descent (delta) from perfect total vaginal length in the mesh group was 1.1 (0.3) cm, and the delta in the fascia group was 2.8 (0.8) cm (p=0.02, Mann-Whitney U). The proportion of women with "optimal" surgical outcome in the mesh group was 89% and 61% in the fascia group (p=0.06, Fischer's exact test). This study suggests that cadaveric fascia lata may not be a good choice for ASC.

The Use of Human Dermal Allograft Material for Transvaginal Slings

We evaluated the safety and efficacy of using human dermal allograft material for transvaginal slings to treat female stress urinary incontinence (SUI).

Materials and Methods

We present a prospective series of 253 patients with SUI treated with a transvaginal sling using a Repliform cadaveric human dermal allograft (LifeCell Corp., The Woodlands, Texas) and a bone anchor fixation kit. Clinical history, urogynecologic examination and videourodynamics were performed preoperatively. Results were assessed by a third party through validated quality of life questionnaires (Incontinence Impact Questionnaire and Urogenital Distress Inventory), overall impression and percent of improvement as perceived by the patients, and pad use. Scheduled follow-up examination were performed to rule out erosion, infection, obstruction, pain or recurrent incontinence.

Results

Complete follow-up was available on 234 of 253 patients. Average follow-up was 18 months. Of the patients 78% were cured or improved according to the questionnaires. The average improvement was 80%. At 18 months of follow-up incontinence average distress and scores decreased 10 and 7 points, respectively. Complications were de novo urgency in 5% of cases, recurrent SUI in 15% with no cases of persistent SUI, retention in 2% and slow vaginal wall healing in 1.7%. Of 156 patients 51 (22%) had persistent urgency. There were no cases of vaginal or urethral erosion, osteitis pubis or osteomyelitis.

Conclusions

Our data indicate that use of human dermal allograft for transvaginal slings is associated with low complication rates and favorable outcomes at an average of 18 months of follow-up.

Medium-term follow-up on use of freeze-dried, irradiated donor fascia for sacrocolpopexy and sling procedures

The aim of this study was to document longer-term follow-up of patients in a previously reported series who underwent either sacrocolpopexy (SCP) or suburethral sling procedures utilizing freeze-dried, irradiated donor fascia. Subjects from the initial series of 67 SCPs and 35 slings were included in this retrospective chart review of postoperative follow-up where surgical follow-up longer than 3 months from the procedure was available. Subjects undergoing SCP were examined at the time of any clinical visit and their pelvic organ support evaluated utilizing the POP-Q system. The SCP procedure was considered to be unsuccessful if any anterior vaginal wall point (Aa or Ba) was at the hymen or beyond, or if the vaginal apical point (C or D) descended to a point at least halfway to the hymen from a position of perfect apical support. Subjects who did not return for clinical examination after their 3-month postoperative visit but who had been in telephone contact with the clinic stating that they had experienced symptomatic recurrence of their POP were also included as having unsuccessful SCP procedures. Those similarly in contact with the office by telephone, but not clinically examined, who indicated no subjective return of their POP, were coded as successful. The outcome of the sling procedure was primarily evaluated subjectively, with the patient indicating that stress incontinence symptoms were present or absent. Follow-up was available for 75 patients, who had undergone 54 SCP and 27 sling procedures (6 patients had undergone both SCP and sling procedures). When failure was defined according to any of the criteria listed in the methods section, 45 (83%) patients experienced SCP failure at a median of 12 months after surgery. A total of 14 (52%) sling procedures were failures, with recurrent SUI symptoms experienced from 2 weeks to 24 months (median 3 months) after the procedure. One year after surgery, 23 (43%) SCPs were known to be failures, and 11 (41%) slings were known to be failures. The remaining 13 (48%) slings were subjectively successful when last seen 7-51 months after surgery. We reoperated on 21 (40%) patients. At the time of repeat SCP (chosen by 16 patients) we found graft between the sacrum and vagina in just 3 patients (19%). The use of freeze-dried, irradiated donor fascia for both SCP and sling procedures was associated with an unacceptably high failure rate in our series.

Assessing outcome after a modified vaginal wall sling for stress incontinence with intrinsic sphincter deficiency

Forty women with stress incontinence, intrinsic sphincter deficiency (ISD), associated or not with urethral hypermobility, a Valsalva leak point pressure (VLLP)<60 cmH(2)0 and a maximum urethral closure pressure<30 cmH(2)0 underwent in situ vaginal wall sling. The main modification to the technique was the use of two small Marlex meshes placed at the lateral edges of the sling. Outcome was assessed by pad use, surgical results and patients' satisfaction. Data of 39/40 patients were analyzed after a minimum follow-up of 1 year. After surgery 30/39 patients were completely dry (no pads), stress incontinence disappeared in 22/39, and 30/39 patients were satisfied with outcome. Reasons for dissatisfaction included recurrence of stress incontinence in three, infections in one and urge incontinence in five. Overall results are good given this category of patients. The vaginal wall sling can be recommended for patients with ISD because the results are promising, it corrects urethral hypermobility and, in our experience, it does not cause obstruction if correctly performed.

TRANSVAGINAL SLING USING ACELLULAR HUMAN DERMAL ALLOGRAFT: SAFETY AND EFFICACY IN 253 PATIENTS

PURPOSE

We evaluated the safety and efficacy of using human dermal allograft material for transvaginal slings to treat female stress urinary incontinence (SUI).

MATERIALS AND METHODS

We present a prospective series of 253 patients with SUI treated with a transvaginal sling using a Repliform cadaveric human dermal allograft (LifeCell Corp., The Woodlands, Texas) and a bone anchor fixation kit. Clinical history, urogynecologic examination and videourodynamics were performed preoperatively. Results were assessed by a third party through validated quality of life questionnaires (Incontinence Impact Questionnaire and Urogenital Distress Inventory), overall impression and percent of improvement as perceived by the patients, and pad use. Scheduled followup examination were performed to rule out erosion, infection, obstruction, pain or recurrent incontinence.

RESULTS

Complete followup was available on 234 of 253 patients. Average followup was 18 months. Of the patients 78% were cured or improved according to the questionnaires. The average improvement was 80%. At 18 months of followup incontinence average distress and scores decreased 10 and 7 points, respectively. Complications were de novo urgency in 5% of cases, recurrent SUI in 15% with no cases of persistent SUI, retention in 2% and slow vaginal wall healing in 1.7%. Of 156 patients 51 (22%) had persistent urgency. There were no cases of vaginal or urethral erosion, osteitis pubis or osteomyelitis.

CONCLUSIONS

Our data indicate that use of human dermal allograft for transvaginal slings is associated with low complication rates and favorable outcomes at an average of 18 months of followup.

Clinical and histological safety assessment of rectocele repair using collagen mesh

AIM

To clinically and histologically evaluate inflammatory response following rectocele repair using porcine collagen mesh.

METHODS

Seventeen patients underwent rectocele repair using porcine collagen mesh. Inflammatory response was assessed by clinical and histological inflammatory grading pre- and postoperatively. Postoperative body temperature, complications and hospital stay was compared with 15 patients undergoing posterior colporraphy.

RESULTS

Postoperative clinical examination did not demonstrate any inflammatory reaction. There were no significant changes in fibroblast count (P = 0.43), connective tissue density grading (P = 0.54), macrophage count (P = 0.20), inflammatory cell count (P = 0.48), total cell count (P = 0.51), or inflammatory grading (P = 0.87) postoperatively compared with preoperative values. Body temperature was significantly elevated for both the study and control group, although higher for the study group, postoperatively day 1 (P < 0.001). There were no significant differences in hospital stay and postoperative complications.

CONCLUSION

Porcine collagen mesh was not associated with an adverse inflammatory response at clinical or histological evaluation and appears to be a safe material when used for rectocele repair.

Inflammatory reaction following bovine pericardium graft augmentation for posterior vaginal wall defect repair

Graft augmentation for repair of recurrent pelvic organ prolapse is commonly used in reconstructive pelvic surgery. The reported complications are mainly late onset. We report a case of early-onset inflammatory reaction following bovine pericardium graft augmentation for posterior vaginal wall defect repair. A 49-year-old presented with a recurrent and symptomatic posterior vaginal wall defect. She underwent an uneventful site-specific repair and bovine graft augmentation. Her early postoperative course was complicated by inflammatory response to the graft presenting as intense pelvic floor spasm and urinary retention. The condition was managed conservatively and resolved subsequently. One year later, the patient continues to be asymptomatic. Transient intense pelvic floor spasm and urinary retention can be the result of inflammatory reaction following graft augmentation with bovine pericardium for posterior vaginal wall defect repair.

Sling failures: What’s next?

The pubovaginal sling has been used to treat anatomic, functional, and recurrent stress urinary incontinence for decades with excellent results. Nevertheless, enthusiasm for the pubovaginal sling is tempered by the surgical morbidity and postoperative voiding dysfunction associated with it. New modifications such as alternative sling materials, bone anchor suspension, and midurethral slings have been developed to reduce operating time and surgical morbidity. The less invasive approaches are now well recognized and midurethral slings have become the most common procedure performed for stress urinary incontinence. Despite the ubiquity of sling procedures in all of their forms, there is no consensus on the management of sling failures. Recent literature suggests that similar to primary genuine stress incontinence, recurrent stress urinary incontinence as a result of sling failure is being successfully managed with less invasive techniques.

The use of graft materials in anterior compartment pelvic reconstruction

Since 1996, the number of reports in the urologic and gynecologic literature using synthetic and allograph prosthetics to enhance the durability of anterior compartment repairs have increased significantly. Central to the use of these prosthetics is long-term follow-up to demonstrate that their use actually confers a benefit to patients and surgeons alike. This review attempts to catalog those reports and the outcomes, with an emphasis on the cadaveric prolapse repair with sling, which is used by the authors for repair of anterior compartment prolapse with overt or occult genuine stress urinary incontinence.

High rate of vaginal extrusion of silicone-coated polyester sling

OBJECTIVES

To report the results of a pilot study evaluating the suitability of silicone-coated polyester as a suburethral sling material for female stress incontinence surgery.

METHODS

Ten women with stress or mixed urinary incontinence were prospectively evaluated with history and physical examination, pad test, urodynamic studies, and the Incontinence-Quality of Life questionnaire. The 2 x 7-cm sling was secured with transvaginal bone anchors placed through an anterior vaginal wall incision. Patients were evaluated at 1, 6, and 12 months by history and physical examination, pad test, and the Incontinence-Quality of Life and Success Rate and Overall Patient Satisfaction questionnaires.

RESULTS

Ten patients (mean age 62.3 years) underwent successful placement of the suburethral sling. The Incontinence-Quality of Life scores improved from a mean total score of 43.3 +/- 14.6 preoperatively to 97.7 +/- 14.4 at 1 year postoperatively (P <0.001). The Success Rate and Overall Patient Satisfaction questionnaires completed at 1 year demonstrated a mean satisfaction rating of 8.9 +/- 1.7 (scale 1 to 10), and the mean reported improvement in incontinence was 90% +/- 16.3%. The mean pad weight decreased from 103.1 +/- 33.2 g preoperatively to 1.6 +/- 1.01 g at 1 year (P <0.007). Two patients (20%) developed vaginal extrusion of the suburethral sling at 6 and 10 months. The slings were removed surgically. Both women healed without incident and reported continued continence at 1 year without additional surgical intervention.

CONCLUSIONS

Placement of a suburethral sling using transvaginal bone anchors and silicone-coated polyester is an effective surgical treatment for stress urinary incontinence at 1 year. The high rate of vaginal extrusion in our series limits its utility.

Efficacy and morbidity of autologous fascia lata sling cystourethropexy

PURPOSE

Sling cystourethropexy for intrinsic sphincter deficiency has more recently been accepted as effective surgical treatment for all types of stress urinary incontinence. We report our experience using autologous fascia lata for sling cystourethropexy, regarding treatment efficacy, harvest site morbidity and patient satisfaction.

MATERIALS AND METHODS

A retrospective data base review identified all women who underwent sling cystourethropexy using autologous fascia lata for stress urinary incontinence. A followup survey study using questionnaires (Black and Urogenic Distress Inventory-6) combined with questions regarding pad use, satisfaction and leg morbidity was done.

RESULTS

A total of 100 women who could be contacted and who had undergone autologous fascia lata sling cystourethropexy performed by a single surgeon between 1993 and 2002 were surveyed. Mean patient followup was 4.4 years (range 0.8 to 9.3). Of the women 85% stated that they were dry or improved and 93% were pain-free at the harvest site by 7 days. There was no harvest site infection and no lower extremity thrombotic complication. Of the patients 83% indicated that the procedure had a positive effect on their life with only 4% stating that it had a negative effect, while 77% were satisfied with the procedure, 82% would recommend the procedure to a friend with incontinence and 83% would undergo the procedure if making the decision again.

CONCLUSIONS

Autologous fascia lata sling cystourethropexy is associated with high patient satisfaction and treatment efficacy comparable to that of other sling cystourethropexy materials, as determined by questionnaire. Harvest site morbidity is low. Sling cystourethropexy using autologous fascia lata should be considered as a primary surgical approach in women with stress urinary incontinence.

Abdominal Sacral Colpopexy Using Autologous Fascia Lata

PURPOSE

Numerous techniques and materials have traditionally been used to correct vaginal vault prolapse, including cadaveric fascia, synthetic materials and autologous rectus fascia. We report our experience with autologous fascia lata used for abdominal sacral colpopexy.

MATERIALS AND METHODS

A retrospective review identified all women who underwent abdominal sacral colpopexy using autologous fascia lata for vaginal vault prolapse with at least 18 months of followup. Preoperative and postoperative pelvic organ prolapse quantification (POP-Q) scores, relevant clinical and operative parameters, treatment efficacy, harvest site morbidity and patient satisfaction were assessed.

RESULTS

Ten women underwent this procedure between 1999 and 2001. Mean patient age was 68.3 years (range 55 to 82). Followup was 19 to 42 months (mean +/- SD 30.5 +/- 7.78). Preoperatively POP-Q stages were II to IV in 3, 5 and 2 cases, respectively. Postoperative POP-Q scores improved to and remained at stage II or lower in all 10 patients. Mean operative time was 182 +/- 40.94 minutes (range 136 to 265). Mean blood loss was 107.5 +/- 50.07 cc (range 50 to 200). There was no morbidity associated with fascia lata harvest. Eight of the 9 women alive at review completed and returned the survey. When asked if they could return to how they were before surgery, would they still have the same procedure done and would they recommend the procedure to a friend, all respondents answered yes to each question.

CONCLUSIONS

Autologous fascia lata compares favorably in efficacy to that reported for other materials in the contemporary literature and it is not associated with any significant morbidity.

Anterior Vaginal Wall Hammock With Fascia Lata for the Correction of Stage 2 or Greater Anterior Vaginal Compartment Relaxation

PURPOSE

We determined the efficacy of the anterior vaginal wall hammock (AVWH) using fascia lata for the correction of anterior vaginal compartment relaxation.

MATERIALS AND METHODS

A total of 58 patients with stage 2 or greater anterior vaginal compartment relaxation underwent an AVWH procedure with autologous or allograft fascia lata from June 1998 to March 2001. Patients were evaluated preoperatively with a history and pelvic organ prolapse quantitative examination. Postoperatively patients were evaluated at 6 weeks, 6 months and yearly thereafter with pelvic organ prolapse quantitative staging of the anterior, middle and posterior compartments. Objective cure was defined as stage 0 or 1 relaxation. Subjective cure was defined as no symptoms of pelvic pressure or a vaginal bulge.

RESULTS

Of the 69 (89%) patients who underwent surgery 58 were available for followup. Median age of the population was 61.9 years and median followup was 24.7 months (range 12 to 57). There were 11 objective failures (19%) in the anterior compartment, of which 1 (2%) was symptomatic. Two patients (4%) had enteroceles that required surgical correction. Of the patients 16 (28%) had new onset or worsening stage 2 posterior relaxation at a median of 15.2 months postoperatively, including 7 (12%) who were symptomatic and underwent subsequent repair.

CONCLUSION

The AVWH procedure with fascia lata is safe and effective for correcting stage 2 or greater anterior compartment relaxation. The whole pelvic floor must be evaluated and repaired to minimize the progression of prolapse of the middle and posterior compartments.

Management of intrinsic sphincteric deficiency in women

PURPOSE

We reviewed treatment options for intrinsic sphincteric deficiency in women with an emphasis on safety and efficacy.

MATERIALS AND METHODS

Using MEDLINE, we comprehensively reviewed literature relevant to management of intrinsic sphincteric deficiency. We focused on peer reviewed articles from 1995 through December 2001 with older articles included for historical purposes.

RESULTS

Past and current treatment options for intrinsic sphincteric deficiency fall into the 3 categories of urethral bulking agents, slings and artificial urinary sphincter. The autologous fascial pubovaginal sling continues to be the gold standard but newer sling materials are promising. Less invasive therapies with acceptable efficacy and safety profiles are still needed.

CONCLUSIONS

Improved understanding of the continence mechanism may lead to new and improved treatment modalities for intrinsic sphincteric deficiency. However, it will be impossible to compare these treatment options with past treatment unless long-term, randomized, multicenter trials with specific definitions of cure and failure are conducted.

Changes in tensile strength of cadaveric human fascia lata after implantation in a rabbit vagina model

PURPOSE

We determined changes in tensile properties after vaginal implantation of human cadaveric fascia lata.

MATERIALS AND METHODS

Baseline tensile properties were determined for freeze-dried, gamma irradiated human cadaveric fascia lata from 3 separate lots. Fascial strips (2 x 0.5 cm.) from 2 lots were implanted between the rectovaginal membrane and vaginal mucosa in New Zealand white rabbits. The strips were excised en bloc 12 weeks after implantation. Tensile property measurements were repeated and compared with pre-implantation values.

RESULTS

Pre-implantation interlot and intralot variability in baseline tensile properties was significant. After implantation there was an approximate 90% decrease in tensile strength from baseline values. There was no gross evidence of graft autolysis.

CONCLUSIONS

The decrease in tensile strength of cadaveric fascial graft was significant after implantation in this model.

Continued multicenter followup of cadaveric prolapse repair with sling

PURPOSE

Since our initial description of the technique of combining a transvaginal sling with a cystocele repair using solvent dehydrated cadaveric fascia lata and bone anchors we have continued to follow our outcomes closely to determine long-term results. We present the updated, multicenter results of the cadaveric prolapse repair with sling.

MATERIALS AND METHODS

A total of 172 patients 35 to 90 years old (mean age 62.1) have undergone cadaveric prolapse repair with sling with a mean followup of 12.4 months (range 6 to 28). Of these patients 132 (76.7%) completed followup. Repair was performed for grade 2 cystoceles in 73 cases, grade 3 cystoceles in 43 and grade 4 cystoceles in 16. Followup included physical examination (degree of pelvic prolapse), SEAPI scores, complications, patient reported continence, perceived improvement and satisfaction. The latter 2 parameters were obtained using a validated questionnaire.

RESULTS

Of the 132 patients 15 (11.4%) had grade 1 and 2 (1.5%) had grade 2 cystocele recurrence, which required no further treatment, and 13 (9.8%) had recurrent or de novo apical vaginal prolapse. Preoperative and postoperative SEAPI scores were 5.58 and 0.9, respectively (p <0.001). A total of 90 patients (68.2%) do not use any pads for protection. Of the 132 patients 24 (18.2%) have stress incontinence of any degree, including 14 (10.6%) with pure stress urinary incontinence, 8 (6.0%) report de novo urge incontinence, 26 (19.7%) have persistent urge incontinence, 21 (15.9%) have any degree of urgency without urge incontinence, 28 (21.2%) report resolution of preoperative urgency or urge incontinence symptoms, 7 (5.3%) have mixed incontinence and 1 had prolonged urinary retention requiring urethrolysis. There has been 1 case of osteitis pubis and no osteomyelitis. Of the patients 94 (71.2%) reported greater than or equal to 70% subjective improvement overall, including 12 who were dry preoperatively, 99 (75.0%) were greater than or equal to 70% satisfied, 105 (79.9%) would repeat the surgery and 102 (77.4%) would recommend the surgery to a friend. With regard to continence 31 (23.8%) patients were less than or equal to 50% improved. A total of 108 (81.8%) patients have no stress urinary incontinence, and patient improvement, satisfaction and complication rates have been acceptable. We have been particularly impressed by the results of the cystocele repair. Surgeons must consider that patient perceived improvement and satisfaction level are essential components of the measure of success or failure of a given therapy.

CONCLUSIONS

With a maximum of 28 months of followup of the cadaveric prolapse repair with sling procedure, we continue to be satisfied with the success of the cystocele repair and the competitive stress urinary incontinence cure rate.