Pelvic floor function following ventral rectopexy versus STARR in the treatment of obstructed defecation

Mesh-associated complications in minimally invasive ventral mesh rectopexy: a systematic review

BACKGROUND

Ventral mesh rectopexy (laparoscopic and robotic) is a common and well established treatment of rectal prolapse. Although described as safe and effective, complications, especially mesh-associated ones are often mentioned. Additionally, there is no consensus regarding the mesh type and fixation method as well as the materials used for this purpose. The aim of this systematic review was to identify the total amount of complications and of those the mesh-associated ones.

METHODS

Pubmed, Web of Science and Cochrane Central Register were screened for complications in general and in detail regarding the mesh(es) and a systematic review was performed.

RESULTS

Following qualitative evaluation, 40 studies were identified for further investigation. Across 6269 patients, complications were found in 9.2% (622 patients). Mesh-related complications were described in 1.4% (88 patients) of which 64.8% were erosions, 11.4% fistulas and 13.6% mesh releases. The complication rate according to the different materials were low with 1% in biological and synthetic meshes and 1.8% in not further described or mixed mesh type. Non-absorbable material to fixate the mesh was most frequently used to fixate the mesh.

CONCLUSION

Laparoscopic ventral mesh rectopexy is a safe operation with a low-complication rate, regardless of mesh type.

Laparoscopic ventral mesh rectopexy vs. transperineal mesh repair for obstructed defecation syndrome associated with rectocele: comparison of selectively distributed patients

PURPOSE

Obstructed defecation syndrome represents 50-60% of patients with symptoms of constipation. We aimed to compare the two frequently performed surgical methods, laparoscopic ventral mesh rectopexy and transperineal mesh repair, for this condition in terms of functional and surgical outcomes.

METHODS

This study is a retrospective review of 131 female patients who were diagnosed with obstructed defecation syndrome, attributed to rectocele with or without rectal intussusception, enterocele, hysterocele or cystocele, and who underwent either laparoscopic ventral mesh rectopexy or transperineal mesh repair. Patients were evaluated for surgical outcomes based on the operative time, the length of hospital stay, operative complications, using prospectively designed charts. Functional outcome was assessed by using the Initial Measurement of Patient-Reported Pelvic Floor Complaints Tool.

RESULTS

Fifty-one patients diagnosed with complex rectocele underwent laparoscopic ventral mesh rectopexy, and 80 patients diagnosed with simple rectocele underwent transperineal mesh repair. Mean age was found to be 50.35 ± 13.51 years, and mean parity 2.14 ± 1.47. Obstructed defecation symptoms significantly improved in both study groups, as measured by the Colorectal Anal Distress Inventory, Constipation Severity Instrument and Patient Assessment of Constipation-Symptoms scores. Minor postoperative complications including wound dehiscence (n = 3) and wound infection (n = 2) occurred in the transperineal mesh repair group.

CONCLUSION

Laparoscopic ventral mesh rectopexy and transperineal mesh repair are efficient and comparable techniques in terms of improvement in constipation symptoms related to obstructed defecation syndrome. A selective distribution of patients with or without multicompartmental prolapse to one of the treatment arms might be the preferred strategy.

Time trend in the surgical management of obstructed defecation syndrome: a multicenter experience on behalf of the Italian Society of Colorectal Surgery (SICCR)

BACKGROUND

Surgical management of obstructed defecation syndrome (ODS) is challenging, with several surgical options showing inconsistent functional results over time. The aim of this study was to evaluate the trend in surgical management of ODS in a 10-year timeframe across Italian referral centers.

METHODS

Surgeons from referral centers for the management of pelvic floor disorders and affiliated to the Italian Society of Colorectal Surgery provided data on the yearly volume of procedures for ODS from 2010 to 2019. Six common clinical scenarios of ODS were captured, including details on patient's anal sphincter function and presence of rectocele and/or rectal intussusception. Perineal repair, ventral rectopexy (VRP), transanal repair (internal Delorme), stapled transanal rectal resection (STARR), Contour Transtar, and transvaginal repair were considered in each clinical scenario.

RESULTS

Twenty-five centers were included providing data on 2943 surgical patients. Procedure volumes ranged from 10-20 (54%) to 21-50 (46%) per year across centers. The most performed techniques in patients with good sphincter function were transanal repair for isolated rectocele (243/716 [34%]), transanal repair for isolated rectal intussusception (287/677 [42%]) and VRP for combined abnormalities (464/976 [48%]). When considering poor sphincter function, these were perineal repair (112/194 [57.8%]) for isolated rectocele, and VRP for the other two scenarios (60/120 [50%] and 97/260 [37%], respectively). The use of STARR and Contour Transtar decreased over time in patients with impaired sphincter function.

CONCLUSIONS

The complexity of ODS treatment is confirmed by the variety of clinical scenarios that can occur and by the changing trend of surgical management over the last 10 years.

Stapled Transanal Rectal Resection (Starr) in the Treatment of Obstructed Defecation: A Systematic Review

Obstructed defecation syndrome (ODS) is a form of constipation that influences the quality of life in most patients and is an important health care issue. In 2004 Longo introduced a minimal invasive trans-anal approach known as Stapled Trans-Anal Rectal Resection (STARR) in order to correct mechanical disorders such as rectocele or rectal intussusception, two conditions present in more than 90% of patients with ODS. Considering the lack of a common view around ODS and STARR procedure. the aim of our study is to review the literature about preoperative assessment, operative features and outcomes of the STARR technique for the treatment of ODS. We performed a systematic search of literature, between January 2008 and December 2020 and 24 studies were included in this review. The total number of patients treated with STARR procedure was 4,464. In conclusion STARR surgical procedure has been proven to be safe and effective in treating symptoms of ODS and improving patients Quality of Life (QoL) and should be taken in consideration in the context of a holistic and multi modal approach to this complex condition. International guidelines are needed in order to optimize the diagnostic and therapeutic process and to improve outcomes.

Obstructed defaecation syndrome: European consensus guidelines on the surgical management

Clinical decision-making in the treatment of patients with obstructed defaecation remains controversial and no international guidelines have been provided so far. This study reports a consensus among European opinion leaders on the management of obstructed defaecation in different possible clinical scenarios.

Ventral Prosthesis Rectopexy for obstructed defaecation syndrome: a systematic review and meta-analysis

Obstructed Defecation Syndrome (ODS) is a rather complex entity concerning mainly females and causing primarily constipation. Surgical treatment in the form of Ventral Prosthesis Rectopexy (VPR) has been proposed and seems to have the best outcomes. However, the selection criteria of patients to undergo this kind of operation are not clear and the reported outcomes are mainly short-term and data on long-term outcomes is scarce. This study assesses new evidence on the efficacy of VPR for the treatment of ODS, specifically focusing on inclusion criteria for surgery and the long-term outcomes. A search was performed of MEDLINE, EMBASE, Ovid and Cochrane databases on all studies reporting on VPR for ODS from 2000 to March 2020. No language restrictions were made. All studies on VPR were reviewed systematically. The main outcomes were intra-operative complications, conversion, procedure duration, short-term mortality and morbidity, length of stay, faecal incontinence and constipation, quality of life (QoL) score and patient satisfaction. Quality assessment and data extraction were performed independently by three observers. Fourteen studies including 963 patients were eligible for analysis. The immediate postoperative morbidity rate was 8.9%. A significant improvement in constipation symptoms was observed in the 12-month postoperative period for ODS (p < 0.0001). Current evidence shows that VPR offers symptomatic relief to the majority of patients with ODS, improving both constipation-like symptoms and faecal incontinence for at least 1-2 years postoperatively. Some studies report on functional results after longer follow-up, showing sustainable improvement, although in a lesser extent.

Imaging modalities for the detection of posterior pelvic floor disorders in women with obstructed defaecation syndrome

BACKGROUND

Obstructed defaecation syndrome (ODS) is difficulty in evacuating stools, requiring straining efforts at defaecation, having the sensation of incomplete evacuation, or the need to manually assist defaecation. This is due to a physical blockage of the faecal stream during defaecation attempts, caused by rectocele, enterocele, intussusception, anismus or pelvic floor descent. Evacuation proctography (EP) is the most common imaging technique for diagnosis of posterior pelvic floor disorders. It has been regarded as the reference standard because of extensive experience, although it has been proven not to have perfect accuracy. Moreover, EP is invasive, embarrassing and uses ionising radiation. Alternative imaging techniques addressing these issues have been developed and assessed for their accuracy. Because of varying results, leading to a lack of consensus, a systematic review and meta-analysis of the literature are required.

OBJECTIVES

To determine the diagnostic test accuracy of EP, dynamic magnetic resonance imaging (MRI) and pelvic floor ultrasound for the detection of posterior pelvic floor disorders in women with ODS, using latent class analysis in the absence of a reference standard, and to assess whether MRI or ultrasound could replace EP. The secondary objective was to investigate differences in diagnostic test accuracy in relation to the use of rectal contrast, evacuation phase, patient position and cut-off values, which could influence test outcome.

SEARCH METHODS

We ran an electronic search on 18 December 2019 in the Cochrane Library, MEDLINE, Embase, SCI, CINAHL and CPCI. Reference list, Google scholar. We also searched WHO ICTRP and clinicaltrials.gov for eligible articles. Two review authors conducted title and abstract screening and full-text assessment, resolving disagreements with a third review author.

SELECTION CRITERIA

Diagnostic test accuracy and cohort studies were eligible for inclusion if they evaluated the test accuracy of EP, and MRI or pelvic floor ultrasound, or both, for the detection of posterior pelvic floor disorders in women with ODS. We excluded case-control studies. If studies partially met the inclusion criteria, we contacted the authors for additional information.

DATA COLLECTION AND ANALYSIS

Two review authors performed data extraction, including study characteristics, 'Risk-of-bias' assessment, sources of heterogeneity and test accuracy results. We excluded studies if test accuracy data could not be retrieved despite all efforts. We performed meta-analysis using Bayesian hierarchical latent class analysis. For the index test to qualify as a replacement test for EP, both sensitivity and specificity should be similar or higher than the historic reference standard (EP), and for a triage test either specificity or sensitivity should be similar or higher. We conducted heterogeneity analysis assessing the effect of different test conditions on test accuracy. We ran sensitivity analyses by excluding studies with high risk of bias, with concerns about applicability, or those published before 2010. We assessed the overall quality of evidence (QoE) according to GRADE.

MAIN RESULTS

Thirty-nine studies covering 2483 participants were included into the meta-analyses. We produced pooled estimates of sensitivity and specificity for all index tests for each target condition. Findings of the sensitivity analyses were consistent with the main analysis. Sensitivity of EP for diagnosis of rectocele was 98% (credible interval (CrI)94%-99%), enterocele 91%(CrI 83%-97%), intussusception 89%(CrI 79%-96%) and pelvic floor descent 98%(CrI 93%-100%); specificity for enterocele was 96%(CrI 93%-99%), intussusception 92%(CrI 86%-97%) and anismus 97%(CrI 94%-99%), all with high QoE. Moderate to low QoE showed a sensitivity for anismus of 80%(CrI 63%-94%), and specificity for rectocele of 78%(CrI 63%-90%) and pelvic floor descent 83%(CrI 59%-96%). Specificity of MRI for diagnosis of rectocele was 90% (CrI 79%-97%), enterocele 99% (CrI 96%-100%) and intussusception 97% (CrI 88%-100%), meeting the criteria for a triage test with high QoE. MRI did not meet the criteria to replace EP. Heterogeneity analysis showed that sensitivity of MRI performed with evacuation phase was higher than without for rectocele (94%, CrI 87%-98%) versus 65%, CrI 52% to 89%, and enterocele (87%, CrI 74%-95% versus 62%, CrI 51%-88%), and sensitivity of MRI without evacuation phase was significantly lower than EP. Specificity of transperineal ultrasound (TPUS) for diagnosis of rectocele was 89% (CrI 81%-96%), enterocele 98% (CrI 95%-100%) and intussusception 96% (CrI 91%-99%); sensitivity for anismus was 92% (CrI 72%-98%), meeting the criteria for a triage test with high QoE. TPUS did not meet the criteria to replace EP. Heterogeneity analysis showed that sensitivity of TPUS performed with rectal contrast was not significantly higher than without for rectocele(92%, CrI 69%-99% versus 81%, CrI 58%-95%), enterocele (90%, CrI 71%-99% versus 67%, CrI 51%-90%) and intussusception (90%, CrI 69%-98% versus 61%, CrI 51%-86%), and was lower than EP. Specificity of endovaginal ultrasound (EVUS) for diagnosis of rectocele was 76% (CrI 54%-93%), enterocele 97% (CrI 80%-99%) and intussusception 93% (CrI 72%-99%); sensitivity for anismus was 84% (CrI 59%-96%), meeting the criteria for a triage test with very low to moderate QoE. EVUS did not meet the criteria to replace EP. Specificity of dynamic anal endosonography (DAE) for diagnosis of rectocele was 88% (CrI 62%-99%), enterocele 97% (CrI 75%-100%) and intussusception 93% (CrI 65%-99%), meeting the criteria for a triage test with very low to moderate QoE. DAE did not meet the criteria to replace EP. Echodefaecography (EDF) had a sensitivity of 89% (CrI 65%-98%) and specificity of 92% (CrI 72%-99%) for intussusception, meeting the criteria to replace EP but with very low QoE. Specificity of EDF for diagnosis of rectocele was 89% (CrI 60%-99%) and for enterocele 97% (CrI 87%-100%); sensitivity for anismus was 87% (CrI 72%-96%), meeting the criteria for a triage test with low to very low QoE.

AUTHORS' CONCLUSIONS

In a population of women with symptoms of ODS, none of the imaging techniques met the criteria to replace EP. MRI and TPUS met the criteria of a triage test, as a positive test confirms diagnosis of rectocele, enterocele and intussusception, and a negative test rules out diagnosis of anismus. An evacuation phase increased sensitivity of MRI. Rectal contrast did not increase sensitivity of TPUS. QoE of EVUS, DAE and EDF was too low to draw conclusions. More well-designed studies are required to define their role in the diagnostic pathway of ODS.

Surgical management of the rectocele - An update

Rectocele is defined as a hernia of the rectum with protrusion of the anterior rectal wall through the posterior wall of the vagina. This condition occurs commonly, with an estimated prevalence of 30-50% of women over age 50. The symptomatology that leads to consultation is variable but consists predominantly of anorectal and/or gynecological complaints such as dyschezia, requiring digital disimpaction maneuvers, pelvic heaviness, anal incontinence, or dyspareunia. Rectocele may be isolated or associated with other disorders of pelvic stasis involving cystocele and uterine prolapse. Complementary exams (dynamic imaging and anorectal manometry) are essential before deciding on the surgical management of this condition. The indications for surgical management of rectocele are based on the intensity of symptoms and the resulting deterioration in quality of life, and surgery should be discussed after failure of medical treatment. Different approaches are possible, although there is currently no real consensus in the literature. The initial approach depends on the type of rectocele: if it involves the low or mid rectum or is isolated, an approach from below (transanal, transperineal, or transvaginal approach) can be proposed, while, in the presence of a high rectocele and/or associated with various disorders of pelvic stasis, transabdominal rectopexy is more suitable.

Laparoscopic Ventral Rectopexy Versus Stapled Transanal Rectal Resection for Treatment of Obstructed Defecation in the Elderly: Long-term Results of a Prospective Randomized Study

BACKGROUND

Obstructed defecation is a common complaint in coloproctology. Many anal, abdominal, and laparoscopic procedures are adopted to correct the underlying condition.

OBJECTIVE

The purpose of this study was to compare long-term functional outcome, recurrence rate, and quality of life between laparoscopic ventral rectopexy and stapled transanal rectal resection in the treatment of obstructed defecation.

DESIGN

This was a prospective randomized study.

SETTING

This study was performed at academic medical centers.

PATIENTS

Patients were included if they had obstructed defecation attributed to pelvic structural abnormalities that did not to respond to conservative measures. Exclusion criteria included nonrelaxing puborectalis, previous abdominal surgery, other anal pathology, and pudendal neuropathy.

INTERVENTION

Patients were randomly allocated to either laparoscopic ventral rectopexy (group 1) or stapled transanal rectal resection (group 2).

MAIN OUTCOME MEASURES

The primary outcome measures were improvement of modified obstructed defecation score and recurrences after ≥3 years of follow-up. Secondary outcomes were postoperative complications, continence status using Wexner incontinence score, and quality of life using Patient Assessment of Constipation-Quality of Life Questionnaire.

RESULTS

The study included 112 patients (56 in each arm). ASA score II was reported in 32 patients (18 in group 1 and 14 in group 2; p = 0.12), whereas 3 patients in each group had ASA score III. Minor postoperative complications were seen in 11 patients (20%) of group 1 and 14 patients of group 2 (25%; p = 0.65). During follow-up, 3 patients had fecal urgency after stapled transanal rectal resection but no sexual dysfunction in either procedure. After 6 months, modified obstructed defecation score improvement >50% was reported in 73% versus 82% in groups 1 and 2 (p = 0.36). After a mean follow-up of 41 months, recurrences of symptoms were reported in 7% in group 1 versus 24% in group 2 (p = 0.04). Six months postoperation, perineal descent improved >50% in defecogram in 80% of group 1 versus no improvement in group 2. Quality of life significantly improved in both groups after 6 months; however a significant long-term drop (>36 months) was seen only in group 2.

LIMITATIONS

Possible limitations of this study are the presence of a single operator and the absence of blindness of the technique for both patient and assessor.

CONCLUSIONS

In elderly patients even with comorbidities, both laparoscopic ventral rectopexy and stapled transanal rectal resection are safe and can improve function of the anorectum in patients with obstructed defecation attributed to structural abnormalities. Laparoscopic ventral rectopexy has better long-term functional outcome, less complications, and less recurrences compared with stapled transanal rectal resection. Perineal descent only improves after laparoscopic ventral rectopexy. Stapled transanal rectal resection was shown not to be the first choice in elderly patients with obstructed defecation unless they had a medical contraindication to laparoscopic procedures. See Video Abstract at http://links.lww.com/DCR/A788.