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Techniques in Coloproctology Jul 2021Treatment for cryptoglandular anal fistula (AF) is challenging and a lack of uniform outcomes in the literature prevents direct comparison of treatments. This can be... (Review)
Review
BACKGROUND
Treatment for cryptoglandular anal fistula (AF) is challenging and a lack of uniform outcomes in the literature prevents direct comparison of treatments. This can be addressed by developing a core outcome set, a standardised set of outcomes reported in all interventional studies for a specific condition. The aim of this systematic review is to assess the range of outcomes, their definitions, and the measurement instruments currently utilised in interventional studies for adult patients with AF. This will inform the development of an AF core outcome set.
METHODS
Medline, Embase and The Cochrane Library were searched to identify all patient- and clinician-reported outcomes in studies assessing medical, surgical or combination treatment of adult patients with AF published from January 2008 to May 2020. The resulting outcomes were categorized according to the Core Outcome Measurement in Effectiveness Trials (COMET) taxonomy to better understand their distribution.
RESULTS
In total, 155 studies were included, 552 outcomes were extracted, with a median of three outcomes (interquartile range 2-5) per study. Only 25% of studies demonstrated high-quality outcome reporting. The outcomes were merged into 52 unique outcomes and structured into four core areas and 14 domains, with the majority in the domain of physiological or clinical (gastrointestinal) outcomes. The most commonly reported outcomes were healing (77%), incontinence (63%), and recurrence (40%), with no single outcome assessed across all studies. There was a wide variation in outcome definitions and measurement instruments used.
CONCLUSIONS
There is substantial heterogeneity in outcomes, definitions, and measurement instruments reported in interventional studies for cryptoglandular anal fistula. This emphasises the need for standardised outcome reporting and measurement.
Topics: Adult; Humans; Rectal Fistula; Recurrence; Treatment Outcome
PubMed: 33963945
DOI: 10.1007/s10151-021-02452-5 -
Colorectal Disease : the Official... Jul 2016The introduction of anti-tumour necrosis factor (anti-TNF; infliximab and adalimumab) has changed the management of Crohn's perianal fistula from almost exclusively... (Comparative Study)
Comparative Study Meta-Analysis Review
AIM
The introduction of anti-tumour necrosis factor (anti-TNF; infliximab and adalimumab) has changed the management of Crohn's perianal fistula from almost exclusively surgical treatment to one with a much larger emphasis on medical therapy. The aim of this systematic review was to provide an overview of the success rates of setons and anti-TNF for Crohn's perianal fistula.
METHOD
Studies evaluating the effect of setons and anti-TNF on Crohn's perianal fistula were included. Studies assessing perianal fistula in children, rectovaginal and rectourinary fistulae were excluded. The primary end-point was the fistula closure rate. Partial closure and recurrence rates were secondary end-points.
RESULTS
Ten studies on seton drainage were included (n = 305). Complete closure varied from 13.6% to 100% and recurrence from 0% to 83.3%. In 34 anti-TNF studies (n = 1449), complete closure varied from 16.7% and 93% (partial closure 8.0-91.2%) and recurrence from 8.0% to 40.9%. Four randomized controlled trials (n = 1028) comparing anti-TNF with placebo showed no significant difference in complete or partial closure in meta-analysis (risk difference 0.12, 95% CI -0.06 to 0.30 and 0.09, 95% CI -0.23 to 0.41, respectively). Subgroup analysis (n = 241) showed a significant advantage for complete fistula closure with anti-TNF in two trials with follow-up > 4 weeks (46% vs 13%, P = 0.003 and 30% vs 13%, P = 0.03). Of four included cohort studies, two revealed a significant difference in response in favour of combined treatment (P = 0.001 and P = 0.014).
CONCLUSION
Closure and recurrence rates after seton drainage as well as anti-TNF vary widely. Despite a large number of studies, no conclusions can be drawn regarding the preferred strategy. However, combination therapy with (temporary) seton drainage, immunomodulators and anti-TNF may be beneficial in achieving perianal fistula closure.
Topics: Adalimumab; Adult; Cohort Studies; Crohn Disease; Drainage; Female; Gastrointestinal Agents; Humans; Infliximab; Male; Perineum; Randomized Controlled Trials as Topic; Rectal Fistula; Recurrence; Treatment Outcome; Tumor Necrosis Factor-alpha
PubMed: 26921847
DOI: 10.1111/codi.13311 -
ANZ Journal of Surgery Dec 2019There is no consensus about the optimal management of the rectal stump after an emergency subtotal colectomy in patients with acute severe ulcerative colitis (ASUC). The...
BACKGROUND
There is no consensus about the optimal management of the rectal stump after an emergency subtotal colectomy in patients with acute severe ulcerative colitis (ASUC). The aim was to perform a systematic review of the published literature on the surgical and medical management of the rectal stump after an emergency (sub) total colectomy in patients with ASUC.
METHODS
The following databases were searched, MEDLINE (PubMed), EMBASE and OVID SP, from January 1993 to March 2018. Studies that reported post-operative outcomes after surgical and/or medical management of the rectal stump after emergency (sub) total colectomy in adults with ASUC were included. Two independent assessors reviewed eligible articles.
RESULTS
A total of 11 studies met the inclusion criteria. All were case series and included 476 patients. Regarding surgical management, five studies reported on closed subcutaneous placement of the rectal stump, seven on intraperitoneal placement and two on the formation of a formal mucous fistula. The lowest reported pelvic sepsis rate was in patients with subcutaneous closure of the rectal stump (n = 144, 2%) and lowest wound infection rate was reported after intraperitoneal closure (n = 268, 7.8%). The highest rate of mortality was reported after intraperitoneal placement of the rectal stump (n = 268, 1.5%). There were insufficient data reported on medical management for any comparison.
CONCLUSION
Subcutaneous placement of the rectal stump was associated with the lowest morbidity and mortality rate, although data are of limited quality and insufficient to guide practice recommendations.
Topics: Acute Disease; Colectomy; Colitis, Ulcerative; Emergencies; Humans; Postoperative Complications
PubMed: 30919553
DOI: 10.1111/ans.15075 -
International Journal of Colorectal... Feb 2023The optimal surgical approach for removal of colorectal endometrial deposits is unclear. Shaving and discoid excision of colorectal deposits allow organ preservation but... (Meta-Analysis)
Meta-Analysis
PURPOSE
The optimal surgical approach for removal of colorectal endometrial deposits is unclear. Shaving and discoid excision of colorectal deposits allow organ preservation but risk recurrence with associated functional issues and re-operation. Formal resection risks potential higher complications but may be associated with lower recurrence rates. This meta-analysis compares peri-operative and long-term outcomes between conservative surgery (shaving and disc excision) versus formal colorectal resection.
METHODS
The study was registered with PROSPERO. A systematic search was performed on PubMed and EMBASE databases. All comparative studies examining surgical outcomes in patients that underwent conservative surgery versus colorectal resection for rectal endometrial deposits were included. The two main groups (conservative versus resection) were compared in three main blocks of variables including group comparability, operative outcomes and long-term outcomes.
RESULTS
Seventeen studies including 2861 patients were analysed with patients subdivided by procedure: colorectal resection (n = 1389), shaving (n = 703) and discoid excision (n = 742). When formal colorectal resection was compared to conservative surgery there was lower risk of recurrence (p = 0.002), comparable functional outcomes (minor LARS, p = 0.30, major LARS, p = 0.54), similar rates of postoperative leaks (p = 0.22), pelvic abscesses (p = 0.18) and rectovaginal fistula (p = 0.92). On subgroup analysis, shaving had the highest recurrence rate (p = 0.0007), however a lower rate of stoma formation (p < 0.00001) and rectal stenosis (p = 0.01). Discoid excision and formal resection were comparable.
CONCLUSION
Colorectal resection has a significantly lower recurrence rate compared to shaving. There is no difference in complications or functional outcomes between discoid excision and formal resection and both have similar recurrence rates.
Topics: Female; Humans; Endometriosis; Reoperation; Rectovaginal Fistula; Abdominal Abscess; Colorectal Neoplasms
PubMed: 36847868
DOI: 10.1007/s00384-023-04352-6 -
Minerva Gastroenterology Dec 2023By searching relevant literature, the recurrence rate, complication rate after video-assisted anal fistula treatment (VAAFT), and efficacy and safety of the treatment... (Meta-Analysis)
Meta-Analysis
INTRODUCTION
By searching relevant literature, the recurrence rate, complication rate after video-assisted anal fistula treatment (VAAFT), and efficacy and safety of the treatment were analyzed.
EVIDENCE ACQUISITION
Articles that reported the outcomes of VAAFT up to December 2020 were searched in PubMed (Medline) and Cochrane Library, in accordance with the preferred reporting items for systematic review and meta-analysis (PRISMA) screening guidelines. Two researchers independently completed the whole process from screening and inclusion to quality evaluation and bias risk assessment, and the data was included in the RevMan 5.3 software for analysis. The main outcomes were demographic data of patients, detection rate, classification of internal opening of anorectal fistula, postoperative recurrence rate, and incidence of complications.
EVIDENCE SYNTHESIS
A total of 10 articles were included (779 patients). The average age of the patients was 44 years old, average operation time was 60 min, and the average follow-up time was 22 months. The ratio of male to female was 2.4:1, the ratio of high anorectal fistula to low anorectal fistula was 6.6:1, the detection rate of internal openings was 98%, the weighted recurrence rate was 24%, and the weighted complication rate was 1%.
CONCLUSIONS
VAAFT is effective and safe in the treatment of anorectal fistulas.
Topics: Humans; Female; Male; Adult; Rectal Fistula; Communications Media; Gene Library; Libraries; MEDLINE
PubMed: 38197847
DOI: 10.23736/S2724-5985.21.02925-9 -
Techniques in Coloproctology Jul 2015There is still no clear consensus about surgical treatment of anal fistulas. Fistulotomy or fistulectomy and primary sphincter reconstruction is still regarded with... (Review)
Review
There is still no clear consensus about surgical treatment of anal fistulas. Fistulotomy or fistulectomy and primary sphincter reconstruction is still regarded with skepticism. The aim of this systematic review was to evaluate the evidence in the literature supporting the use of this technique in the treatment of complex anal fistulas. MEDLINE, EMBASE and Cochrane Library databases were searched for the period between 1985 and 2015. The studies selected were peer-reviewed articles, with no limitations concerning the study cohort size, length of the follow-up or language. Technical notes, commentaries, letters and meeting abstracts were excluded. The major endpoints were the technique adopted, clinical efficacy, changes at anorectal manometry and assessment of quality of life after the procedure. Fourteen reports (666 patients) satisfied the inclusion criteria. The quality of the studies was low. Some differences about the surgical technique emerged; however, after a weighted average duration of follow-up of 28.9 months, the overall success rate was 93.2 %, with a low morbidity rate. The overall postoperative worsening continence rate was 12.4 % (mainly post-defecation soiling). In almost all cases, the anorectal manometry parameters remained unchanged. The quality of life, when evaluated, improved significantly. Fistulotomy or fistulectomy and primary sphincteroplasty could be a therapeutic option for complex anal fistula. Success rates were very high and the risk of postoperative fecal incontinence was lower than after simple fistulotomy. Well-designed trials are needed to support the inclusion of this technique in a treatment algorithm for the management of complex anal fistulas.
Topics: Anal Canal; Defecation; Digestive System Surgical Procedures; Fecal Incontinence; Humans; Manometry; Quality of Life; Randomized Controlled Trials as Topic; Rectal Fistula; Treatment Outcome
PubMed: 26062740
DOI: 10.1007/s10151-015-1323-4 -
International Journal of Surgery... Jan 2024Considering the difficulty of treating complex anal fistula (CAF), various surgical techniques exist in clinical work. However, none are ideal. Evidence on the efficacy... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Considering the difficulty of treating complex anal fistula (CAF), various surgical techniques exist in clinical work. However, none are ideal. Evidence on the efficacy and safety of different surgical treatments is scarce. The authors aimed to compare the outcomes of the 13 surgical techniques and tried to find the best surgical method for treating CAF.
MATERIALS AND METHODS
The authors searched worldwide databases, including Pubmed, Embase, Cochrane Library, Web of Science, CNKI, WanFang, VIP, and SinoMed, from inception to March 2023. All randomized controlled trials comparing the outcomes of 13 surgical techniques were included according to the PICO principles. The indicators of the cure rate, the recurrence rate, the complication rate, the operating time, the postoperative pain on day 1 (VAS), and the postoperative incontinence in month 1 (Wexner) were extracted and analyzed using STATA software 15.1, Review Manager 5.4, and GeMTC14.3.
RESULTS
Twenty-eight randomized controlled trials with a total of 2274 patients were included in the network meta-analysis. There was no statistically significant difference in the comparison among any surgical interventions in terms of the cure rate ( P >0.05 Table 2) and recurrence rate ( P >0.05 Table 3). However, in terms of complication rate, fistulectomy was lower than FPS (Median: 0.14; 95% CI: 0.02-0.70) or fistulotomy (Median: 0.09; 95% CI: 0.01-0.55), and fistulotomy was lower than EAFR (Median: 0.24; 95% CI: 0.05-0.84), LIFT (Median: 0.17; 95% CI: 0.02-0.66) or LIFT-EAFR (Median: 0.11; 95% CI: 0.01-0.69) ( P >0.05 Table 4). The surface estimated the advantages and disadvantages under the cumulative ranking (SUCRA). The ranking results indicated that fistulectomy might have the lowest complication rate (SUCRA=7.9%). Because the network results of the operating time, the postoperative pain, and the postoperative incontinence contained no closed loops, the results of their probability ranking could only be referenced, demonstrating that fistulectomy might have the shortest operating time (SUCRA=23.4%), video-assisted modified ligation of the intersphincteric fistula tract (VAMLIFT) might have the lowest postoperative pain on day 1 (VAS) (SUCRA=0.4%) and LIFT might have the lowest postoperative incontinence in month 1(Wexner) (SUCRA=16.2%).
CONCLUSION
Fistulectomy might have the lowest complication rate, which might be the relatively superior surgical technique for treating CAF.
Topics: Humans; Network Meta-Analysis; Ligation; Pain, Postoperative; Rectal Fistula; Randomized Controlled Trials as Topic
PubMed: 37737881
DOI: 10.1097/JS9.0000000000000776 -
German Medical Science : GMS E-journal 2012Rectovaginal fistulas are rare, and the majority is of traumatic origin. The most common causes are obstetric trauma, local infection, and rectal surgery. This guideline... (Review)
Review
BACKGROUND
Rectovaginal fistulas are rare, and the majority is of traumatic origin. The most common causes are obstetric trauma, local infection, and rectal surgery. This guideline does not cover rectovaginal fistulas that are caused by chronic inflammatory bowel disease.
METHODS
A systematic review of the literature was undertaken.
RESULTS
Rectovaginal fistula is diagnosed on the basis of the patient history and the clinical examination. Other pathologies should be ruled out by endoscopy, endosonography or tomography. The assessment of sphincter function is valuable for surgical planning (potential simultaneous sphincter reconstruction). Persistent rectovaginal fistulas generally require surgical treatment. Various surgical procedures have been described. The most common procedure involves a transrectal approach with endorectal suture. The transperineal approach is primarily used in case of simultaneous sphincter reconstruction. In recurrent fistulas. Closure can be achieved by the interposition of autologous tissue (Martius flap, gracilis muscle) or biologically degradable materials. In higher fistulas, abdominal approaches are used as well. Stoma creation is more frequently required in rectovaginal fistulas than in anal fistulas. The decision regarding stoma creation should be primarily based on the extent of the local defect and the resulting burden on the patient.
CONCLUSION
In this clinical S3-Guideline, instructions for diagnosis and treatment of rectovaginal fistulas are described for the first time in Germany. Given the low evidence level, this guideline is to be considered of descriptive character only. Recommendations for diagnostics and treatment are primarily based the clinical experience of the guideline group and cannot be fully supported by the literature.
Topics: Adult; Aged; Colon; Combined Modality Therapy; Endosonography; Evidence-Based Medicine; Female; Follow-Up Studies; Germany; Humans; Middle Aged; Postoperative Complications; Practice Guidelines as Topic; Plastic Surgery Procedures; Rectovaginal Fistula; Recurrence; Risk Assessment; Severity of Illness Index; Surgical Flaps; Vagina
PubMed: 23255878
DOI: 10.3205/000166 -
Langenbeck's Archives of Surgery Mar 2017The incidence of anal abscess and fistula is relatively high, and the condition is most common in young men. (Review)
Review
BACKGROUND
The incidence of anal abscess and fistula is relatively high, and the condition is most common in young men.
METHODS
This is a revised version of the German S3 guidelines first published in 2011. It is based on a systematic review of pertinent literature.
RESULTS
Cryptoglandular abscesses and fistulas usually originate in the proctodeal glands of the intersphincteric space. Classification depends on their relation to the anal sphincter. Patient history and clinical examination are diagnostically sufficient in order to establish the indication for surgery. Further examinations (endosonography, MRI) should be considered in complex abscesses or fistulas. The goal of surgery for an abscess is thorough drainage of the focus of infection while preserving the sphincter muscles. The risk of abscess recurrence or secondary fistula formation is low overall. However, they may result from insufficient drainage. Primary fistulotomy should only be performed in case of superficial fistulas. Moreover, it should be done by experienced surgeons. In case of unclear findings or high fistulas, repair should take place in a second procedure. Anal fistulas can be treated only by surgical intervention with one of the following operations: laying open, seton drainage, plastic surgical reconstruction with suturing of the sphincter (flap, sphincter repair, LIFT), and occlusion with biomaterials. Only superficial fistulas should be laid open. The risk of postoperative incontinence is directly related to the thickness of the sphincter muscle that is divided. All high anal fistulas should be treated with a sphincter-saving procedure. The various plastic surgical reconstructive procedures all yield roughly the same results. Occlusion with biomaterial results in lower cure rate.
CONCLUSION
In this revision of the German S3 guidelines, instructions for diagnosis and treatment of anal abscess and fistula are described based on a review of current literature.
Topics: Abscess; Anus Diseases; Germany; Humans; Practice Guidelines as Topic; Rectal Fistula
PubMed: 28251361
DOI: 10.1007/s00423-017-1563-z -
Techniques in Coloproctology Oct 2022Most patients with perianal fistulizing Crohn's disease (pfCD) present with complex types of perianal fistulas and need repetitive repair operations, resulting in a high... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Most patients with perianal fistulizing Crohn's disease (pfCD) present with complex types of perianal fistulas and need repetitive repair operations, resulting in a high risk of sphincter injury. Fistula-tract Laser Closure (FiLaC™) is a novel sphincter-saving technique that obliterates the fistula tract with a photothermal effect. The aim of the present systematic review and meta-analysis was to evaluate the efficacy and safety of FiLaC in pfCD.
METHODS
This study was conducted according to Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. Electronic databases, including PubMed, Embase, Cochrane Library and Wanfang Data were searched for published articles from January 2000 to June 2021. The clinicaltrials.gov website was searched for completed or ongoing trials on pfCD and FiLaC™. The references of each article were also searched for eligible data. The main outcome was the primary healing rate of the FiLaC™ procedure. Additionally, fecal incontinence was analyzed as the secondary outcome to evaluate the safety of FiLaC™.
RESULTS
Six studies met the eligibility criteria and were included in the final analysis. All studies were published within the past 6 years and came from European countries. There were 50 pfCD patients recruited, and 31 patients' fistulas were healed after FiLaC™. The pooled primary healing rate was 68% (95% CI 53.0-84.0%, I = 27%, p = 0.23). There was no major fecal incontinence after surgery.
CONCLUSIONS
These data suggest that FiLaC™ may be an effective and safe procedure for pfCD patients. However, the evidence is poor and there is a need for more high-quality prospective controlled studies with long-term follow-up before this minimally invasive technique is recommended for surgical treatment of pfCD.
Topics: Crohn Disease; Fecal Incontinence; Humans; Lasers; Prospective Studies; Rectal Fistula; Treatment Outcome
PubMed: 35962294
DOI: 10.1007/s10151-022-02682-1