High-stakes Technical Performance Assessments Across the Continuum of Surgical Training.

OBJECTIVE: The aim of this article to outline proposals for the use of high stakes technical performance assessments, defined as assessments of technical skill that take place outside of the operating theatre, across the continuum of surgical training. SUMMARY BACKGROUND DATA: Technological advancements have allowed for the assessment of operative technical skill outside of the workplace environment, developed and evaluated in line with modern concepts of assessment validity. With the introduction of competency-based education principles across surgical training curricula, increasing scrutiny is being placed on the validity and reliability of assessments used to inform high-stakes training decisions regarding selection, progression through training, autonomy granting and end-of-training certification. The role of performance assessments, conducted outside of the workplace environment, is yet to be fully established. METHODS: This article discusses the use of high-stakes performance assessments across the continuum of surgical training, with reference to relevant theories of surgical skill acquisition and assessment, along with contemporary evidence from the performance science literature. RESULTS: Assessments of increasing professional authenticity are required across the continuum of surgical training. In an attempt to capture inherent ability rather than skill at the time of trainee selection, assessments should be of deliberately low levels of professional authenticity. Assessment in early surgical training should focus on ensuring competence in core surgical skills, and then assessing for canonical competence across a series of commonly encountered procedures. Baseline competence in these procedures should ideally be assessed prior to the transition to (supervised) lead operator, with a view to ensuring patient safety and improving the efficiency of in-theatre training. Assessment later in training relies more heavily on the workplace, with simulation offering a complimentary role in ensuring a minimum competency standard in procedures less likely to be encountered in the workplace. CONCLUSION: High-stakes performance assessments can play an important role as part of a programmatic approach to surgical training and certification. They can and should be designed with an appropriate level of professional authenticity to ensure adequate and appropriate representation of the assessment construct.

Generating a Prioritized List of Operative Procedures for Simulation-based Assessment of General Surgery Trainees Through Consensus.

OBJECTIVE: To develop appropriate content for high-stakes simulation-based assessments of operative competence in general surgery training through consensus. BACKGROUND: Valid methods of summative operative competence assessment are required by competency-based training programs in surgery. METHOD: An online Delphi consensus study was conducted. Procedures were derived from the competency expectations outlined by the Joint Committee on Surgical Training Curriculum 2021, and subsequent brainstorming. Procedures were rated according to their perceived importance, perceived procedural risk, how frequently they are performed, and simualtion feasibility by a purposive sample of 30 surgical trainers and a 5-person steering group. A modified Copenhagen Academy for Medical Education and Simulation Needs Assessment Formula was applied to the generated data to produce ranked procedural lists, which were returned to participants for re-prioritization. RESULTS: Prioritized lists were generated for simulation-based operative competence assessments at 2 key stages of training; the end of 'phase 2' prior to the development of a sub-specialty interest, and the end of 'phase 3', that is, end-of-training certification. A total of 21 and 16 procedures were deemed suitable for assessments at each of these stages, respectively. CONCLUSIONS: This study describes a national needs assessment approach to content generation for simulation-based assessments of operative competence in general surgery using Delphi consensus methodology. The prioritized procedural lists generated by this study can be used to further develop operative skill assessments for use in high-stakes scenarios, such as trainee progression, entrustment, and end-of-training certification, before subsequent validity testing.

Management Strategies for Malignant Left-Sided Colonic Obstruction: A Systematic Review and Network Meta-analysis of Randomized Controlled Trials and Propensity Score Matching Studies.

BACKGROUND: The optimal treatment strategy for left-sided malignant colonic obstruction remains controversial. Emergency colonic resection has been the standard of care; however, self-expanding metallic stenting as a bridge to surgery may offer short-term advantages, although oncological concerns exist. Decompressing stoma may provide a valid alternative, with limited evidence. OBJECTIVE: To perform a systematic review and Bayesian arm random-effects model network meta-analysis comparing the approaches for management of malignant left-sided colonic obstruction. DATA SOURCES: A systematic review of PubMed, Embase, Cochrane Library, and Google Scholar databases was conducted from inception to August 22, 2023. STUDY SELECTION: Randomized controlled trials and propensity score-matched studies. INTERVENTIONS: Emergency colonic resection, self-expanding metallic stent, and decompressing stoma. MAIN OUTCOME MEASURES: Oncologic efficacy, morbidity, successful minimally invasive surgery, primary anastomosis, and permanent stoma rates. RESULTS: Nineteen of 5225 articles identified met our inclusion criteria. Stenting (risk ratio 0.57; 95% credible interval, 0.33-0.79) and decompressing stomas (risk ratio 0.46, 95% credible interval: 0.18-0.92) resulted in a significant reduction in the permanent stoma rate. Stenting facilitated minimally invasive surgery more frequently (risk ratio 4.10; 95% credible interval, 1.45-13.13) and had lower overall morbidity (risk ratio 0.58; 95% credible interval, 0.35-0.86). A pairwise analysis of primary anastomosis rates showed increased stenting (risk ratio 1.40; 95% credible interval, 1.31-1.49) compared with emergency resection. There was a significant decrease in the 90-day mortality with stenting (risk ratio 0.63; 95% credible interval, 0.41-0.95) compared with resection. There were no differences in disease-free and overall survival rates, respectively. LIMITATIONS: There is a lack of randomized controlled trials and propensity score matching data comparing short-term and long-term outcomes for diverting stomas compared to self-expanding metallic stents. Two trials compared self-expanding metallic stents and diverting stomas in left-sided malignant colonic obstruction. CONCLUSIONS: This study provides high-level evidence that a bridge-to-surgery strategy is safe for the management of left-sided malignant colonic obstruction and may facilitate minimally invasive surgery, increase primary anastomosis rates, and reduce permanent stoma rates and postoperative morbidity compared with emergency colonic resection.

Development and validation of a simulation-based assessment of operative competence for higher specialist trainees in general surgery.

BACKGROUND: Simulation is increasingly being explored as an assessment modality. This study sought to develop and collate validity evidence for a novel simulation-based assessment of operative competence. We describe the approach to assessment design, development, pilot testing, and validity investigation. METHODS: Eight procedural stations were generated using both virtual reality and bio-hybrid models. Content was identified from a previously conducted Delphi consensus study of trainers. Trainee performance was scored using an equally weighted Objective Structured Assessment of Technical Skills (OSATS) tool and a modified Procedure-Based Assessment (PBA) tool. Validity evidence was analyzed in accordance with Messick's validity framework. Both 'junior' (ST2-ST4) and 'senior' trainees (ST 5-ST8) were included to allow for comparative analysis. RESULTS: Thirteen trainees were assessed by ten assessors across eight stations. Inter-station reliability was high (α = 0.81), and inter-rater reliability was acceptable (inter-class correlation coefficient 0.77). A significant difference in mean station score was observed between junior and senior trainees (44.82 vs 58.18, p = .004), while overall mean scores were moderately correlated with increasing training year (rs = .74, p = .004, Kendall's tau-b .57, p = 0.009). A pass-fail score generated using borderline regression methodology resulted in all 'senior' trainees passing and 4/6 of junior trainees failing the assessment. CONCLUSION: This study reports validity evidence for a novel simulation-based assessment, designed to assess the operative competence of higher specialist trainees in general surgery.

Assessing current handover practices in surgery: A survey of non-consultant hospital doctors in Ireland.

BACKGROUND: Handovers of care are potentially hazardous moments in the patient journey and can lead to harm if conducted poorly. Through a national survey of surgical doctors in Ireland, this paper assesses contemporary surgical handover practices and evaluates barriers and facilitators of effective handover. METHODS: After ethical approval and pre-testing with a representative sample, a cross-sectional, online survey was distributed to non-consultant hospital doctors (NCHDs) working in the Republic of Ireland. A mixed-methods approach was used, combining data using triangulation design. MAIN FINDINGS: A total of 201 responses were received (18.5%). Most participants were senior house officers or senior registrars (49.7% and 37.3%). Most people (85.1%) reported that information received during handover was missing or incorrect at least some of the time. One-third of respondents reported that a near-miss had occurred as a result of handover within the past three months, and handover-related errors resulted in minor (16.9%), moderate (4.9%), or major (1.5%) harm. Only 11.4% had received any formal training. Reported barriers to handover included negative attitudes, a lack of institutional support, and competing clinical activities. Facilitators included process standardisation, improved access to resources, and staff engagement. CONCLUSIONS: Surgical NCHDs working in Irish hospitals reported poor compliance with international best practice for handover and identified potential harms. Process standardisation, appropriate staff training, and the provision of necessary handover-related resources is required at a national level to address this significant patient safety concern.

Baseline Assessments of Psychomotor Aptitude Are Associated With the Future Operative Performance of Surgical Trainees: A Prospective Observational Cohort Study.

OBJECTIVE: This study sought to investigate the association between validated psychomotor ability tests and future in-theater and simulated operative performance. BACKGROUND: Assessments of visuospatial ability, perceptual ability, and manual dexterity correlate with simulated operative performance. Data showing the predictive value of such assessments in relation to future performance in the workplace is lacking. METHODS: Core surgical residents in Ireland recruited from 2016 to 2019 participated in assessments of baseline perceptual, visuospatial, and psychomotor ability; Pictorial Surface Orientation (PicSOr) testing, digital visuospatial ability testing, and manual dexterity testing. Operative performance was prospectively assessed using the in-theater Supervised Structured Assessment of Operative Performance (SSAOP) tool, and simulation-based Operative Surgical Skill (OSS) assessments performed over a 2-year core training period. SSAOP assessments were scored using a 15-point checklist and a global 5-point operative performance score. OSS assessments were scored using procedure-specific checklists. Univariate correlations and multiple linear regression analyses were used to explore the association between fundamental ability measures and operative performance. RESULTS: A total of 242 residents completed baseline psychomotor ability assessments. Aggregated fundamental ability scores were associated with performance in submitted workplace-based SSAOP assessments using the Total Checklist score ( P =0.002) and Overall Performance scores ( P =0.002), independent of operative experience, and undergraduate centile scores. Aggregated ability scores were also positively associated with simulation-based OSS assessment scores on multivariable analysis ( P =0.03). CONCLUSION: This study indicates that visuospatial, psychomotor, and perceptual ability testing scores are associated with the future operative performance of surgical residents.

Survival outcomes after synchronous para-aortic lymph node metastasis in colorectal cancer: A systematic review.

BACKGROUND: Synchronous para-aortic lymph node metastasis (PALNM) in colorectal cancer (CRC) is a relatively rare clinical entity. There is a lack of consensus on management of these patients, and the role of para-aortic lymph node dissection (PALND) remains controversial. This systematic review aims to describe the survival outcomes in colorectal cancer with synchronous PALNM when lymph node dissection is performed. METHODS: A systematic review of Pubmed, Embase and Web of Science databases for PALND in CRC was performed. Studies including patients with synchronous PALNM undergoing resection with curative intent, published from the year 2000 onwards, were included. RESULTS: Twelve retrospective studies were included. Four studies reported survival outcomes for rectal cancer, two for colon cancer and six as colorectal. Survival outcomes for 356 patients were included. Average 5-year overall survival (OS) was 22.4%, 33.9% and 37.7% in the rectal, colon and colorectal groups respectively. Three year OS in the groups was 53.6%, 46.2% and 65.7%. CONCLUSION: There remains a lack of quality data to confidently make recommendations regarding the management of synchronous PALNM in colon and rectal cancer cohorts. Retrospective data suggests a benefit in highly selective cohorts and therefore a case-by-case evaluation remains the standard of care.

Training and assessment using the LapSim laparoscopic simulator: a scoping review of validity evidence.

INTRODUCTION: The LapSim (Surgical Science, Sweden) laparoscopic simulator is a high-fidelity virtual reality simulator for use in endoscopic surgical training. This review critiques the current validity evidence for the LapSim laparoscopic simulator, specifically with respect to its potential use as a tool and method of training and assessment in surgery. METHODS: A scoping review of the MEDLINE (PubMed), EMBASE, Cochrane and Web of Science databases was conducted in accordance with PRISMA guidelines (2020)-scoping review extension. Articles were included if they presented validity evidence for the use of the LapSim in operative skill training or assessment, in accordance with Messick's validity framework. European Association of Endoscopic Surgeons (EAES) guidelines (2005) were used to provide recommendations for the use of the LapSim in operative performance training and assessments. RESULTS: Forty-nine articles were included. An EAES level 2 recommendation was provided with regard to the internal consistency reliability of automated performance metrics in assessing performance. An EAES recommendation of 2 was awarded with respect to the ability of the LapSim to discriminate based on case volume and overall laparoscopic experience (relationships with other variables). Performance assessment metrics on the LapSim correlate with improved performance in the operating room (EAES level of recommendation 1-consequential validity). CONCLUSION: The LapSim has accumulated substantial evidence supporting the validity of its use in surgical training and assessment. Future studies should explore the relationship between the achievement of performance benchmarks on the LapSim and subsequent patient outcomes, and interrogate the benefits of implementing virtual reality simulation training and assessment curricula in post-graduate surgical training programmes.

Assessing Operative Skill in the Competency-based Education Era: Lessons From the UK and Ireland.

INTRODUCTION: Decisions regarding the operative competence of surgical residents in the United Kingdom and Ireland are informed by operative workplace-based assessments (WBAs) and operative number targets for index procedures. This review seeks to outline the validity evidence of these assessment methods. METHODS: A review of the MEDLINE (Pubmed), EMBASE and Cochrane Library databases was undertaken in accordance with the Joanna Briggs Institute Protocol for Scoping Reviews (2020). Articles were included if they provided evidence of the validity of procedure-based assessments, direct observation of procedural skills, or indicative operative number targets. The educational impact of each article was evaluated using a modified Kirkpatrick model. RESULTS: Twenty-eight articles outlining validity evidence of WBAs and operative number targets were synthesised by narrative review. Five studies documented users' views on current assessment methods (Kirkpatrick level 1). Two articles recorded changes in attitudes towards current operative assessments (level 2a). Ten studies documented the ability of current assessments to record improvements in operative competence (level 2b). Ten studies measured a change in behaviour as a result of the introduction of these assessments (level 3). One article studied the ability of operative assessments to predict clinical outcomes (level 4b). CONCLUSIONS: Operative WBAs are reliable. Scores achieved correlate with both time spent in training and recorded operative experience. Trainers and residents have concerns regarding the subjectivity of these assessments and the opportunistic nature in which they are used. Operative number targets are not criterion-referenced, lack validity evidence, and may be set too low to ensure operative competence.

Attrition From a National Surgical Training Program: A Qualitative Analysis.

OBJECTIVE: The objective of this study was to examine the trainee experience to identify some of the factors which contribute to attrition from surgical training. SUMMARY BACKGROUND: Not all trainees who commence a surgical training program continue and complete it. Surgical training can be personally and professionally demanding and trainees may, for a multitude of reasons, change career direction. Attrition from surgical training impacts upon multiple stakeholders: A decision to leave may be difficult and time consuming for the individual and can generate unanticipated inefficiency at a systems level. This project examined attrition from a national surgical training program to deepen understanding of some of the causes of the phenomenon. METHODS: A qualitative study was performed. A purposeful sampling strategy was used to identify representative participants. Semistructured interviews were conducted with eleven trainees who withdrew or considered doing so. A thematic analysis was performed to examine the experiences of trainees and explore the factors which influenced a decision to withdraw. FINDINGS: Five major themes emerged from the interview data: delivery of training, the training atmosphere, influence of seniors, concerns regarding progression, and the perception of the future role with respect to lifestyle. CONCLUSIONS: The personal experience of surgical training is crucial in informing a decision to withdraw from a program. Voluntary attrition is appropriate where doctors, after experiencing some time in surgical training, recognize that a surgical career does not meet their expectation. However, improving the delivery of training by addressing the concerns identified in this study may serve to enhance the personal training experience and hence maximize retention.

Prostate radiotherapy and the risk of secondary rectal cancer-a meta-analysis.

PURPOSE: Radiotherapy is being used increasingly in the treatment of prostate cancer. However, ionising radiation may confer a small risk of a radiation-induced secondary malignancy. We aim to assess the risk of rectal cancer following pelvic radiotherapy for prostate cancer. METHODS: A search was conducted of the PubMed/MEDLINE, EMBASE and Web of Science databases identifying studies reporting on the risk of rectal cancer following prostatic radiotherapy. Studies must have included an appropriate control group of non-irradiated prostate cancer patients. A meta-analysis was performed to assess the risk of prostatic radiotherapy on subsequent rectal cancer diagnosis. RESULTS: In total, 4757 articles were screened with eight studies meeting the predetermined criteria. A total of 796,386 patients were included in this meta-analysis which showed an increased odds ratio (OR) for subsequent rectal cancer in prostate cancer patients treated with radiotherapy compared to those treated by non-radiotherapy means (OR 1.45, 1.07-1.97, p = 0.02). CONCLUSION: These findings confirm that prostate radiotherapy significantly increases the risk of subsequent rectal cancer. This risk has implications for treatment selection, surveillance and patient counselling. However, it is crucial that this information is presented in a rational and comprehensible manner that does not disproportionately frighten or deter patients from what might be their most suitable treatment modality.

Application of PREVENA (Surgical Incision Protection System) in reducing surgical site infections following reversal of ileostomy or colostomy: the PRIC study protocol.

AIM: There is a current lack of evidence in the literature to support the routine use of negative pressure wound therapy (NPWT) to reduce the risk of surgical site infections (SSI) in the setting of ileostomy or colostomy reversal. The aim of this study is to examine whether routine NPWT confers a lower rate of SSI than conventional dressings following reversal of ileostomy or colostomy. METHODS: The PRIC study is a randomized, controlled, open-label, multi-centre superiority trial to assess whether routine NPWT following wound closure confers a lower rate of SSI following reversal of ileostomy or colostomy when compared to conventional dressings. Participants will be consecutively identified and recruited. Eligible participants will be randomized in a 1:1 allocation ratio, to receive either the NPWT (PREVENA) dressings or conventional dressings which will be applied immediately upon completion of surgery. PREVENA dressings will remain applied for a duration of 7 days. Surgical wounds will then be examined on post-operative day seven as well as during follow-up appointments in OPD for any evidence of SSI. In the interim, public health nurses (PHN) will provide out-patient support services incorporating wound assessment and care as part of a routine basis. Study investigators will liaise with PHN to gather the relevant data in relation to the time to wound healing. Our primary endpoint is the incidence of SSI within 30 days of stoma reversal. Secondary endpoints include measuring time to wound healing, evaluating wound healing and aesthetics and assessing patient satisfaction. CONCLUSION: The PRIC study will assess whether routine NPWT following wound closure is superior to conventional dressings in the reduction of SSI following reversal of ileostomy or colostomy and ascertain whether routine NPWT should be considered the new standard of care.

Training to proficiency in surgery using simulation: is there a moral obligation?

A deontological approach to surgical ethics advocates that patients have the right to receive the best care that can be provided. The 'learning curve' in surgical skill is an observable and measurable phenomenon. Surgical training may therefore carry risk to patients. This can occur directly, through inadvertent harm, or indirectly through theatre inefficiency and associated costs. Trainee surgeon operating, however, is necessary from a utilitarian perspective, with potential risk balanced by the greater societal need to train future independent surgeons.New technology means that the surgical learning curve could take place, at least in part, outside of the operating theatre. Simulation-based deliberate practice could be used to obtain a predetermined level of proficiency in a safe environment, followed by simulation-based assessment of operative competence. Such an approach would require an overhaul of the current training paradigm and significant investment in simulator technology. This may increasingly be viewed as necessary in light of well-discussed pressures on surgical trainees and trainers.This article discusses the obligations to trainees, trainers and training bodies raised by simulation technology, and outlines the current arguments both against and in favour of a simulation-based training-to-proficiency model in surgery. The significant changes to the current training paradigm that would be required to implement such a model are also discussed.

Optimal surgical management strategy for treatment of primary anorectal malignant melanoma-a systematic review and meta-analysis.

BACKGROUND: Primary mucosal anorectal malignant melanoma (AMM) is an invasive malignancy with poor survival. Management options have been variable, due to limited data and lack of randomised control trials available on the optimal surgical strategy. The aim of this review was to compare local excision versus radical resection. METHODS: A systematic search of articles in PubMed, Ovid, Scopus, and the Cochrane Library database was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The outcomes of interest were the impact that surgical strategy had on survival (primary) and recurrence rates (secondary) for the treatment of AMM, comparing sphincter sparing local excision (LE) versus extensive abdominoperineal resection (APR). RESULTS: Ten studies met the predefined criteria. Overall, there were 303 patients, with a median age of 58.2 years. Sixty-one percent (n = 187/303) had radical surgery (abdominoperineal resection) for the primary treatment of AMM. Overall, 5-year survival for the APR and LE was 23% and 32% respectively. Meta-analysis on the median OS noted no statistical difference between the two groups. However, local recurrence occurred in 20.82% and 47.04% in the APR and LE groups respectively. Meta-analysis observed a statistically significant reduction in recurrence when patients had an APR as primary treatment (OR 0.15, 95% CI = 0.08-0.28, p < 0.00001). CONCLUSION: Though local recurrence rates are more common with local excision of AMM, this does not confer an inferior OS when comparing LE versus APR. The decision to proceed with LE vs. APR should be made on a case-by-case basis.

Perspectives on simulation-based assessment of operative skill in surgical training.

INTRODUCTION: The perspectives of the wider surgical community toward simulation-based assessment (SBA) in training is a gap in the literature. This study aims to explore the factors associated with the acceptable use of SBA in surgical training, through the perceptions and experiences of a broad range of stakeholder representatives, building on findings from a review of the published literature. MATERIALS AND METHODS: Ten semi-structured interviews were conducted, using a sequential transformative qualitative methods approach, with representatives from identified key stakeholder groups; executive management, risk management, a practicing surgeon, an anaesthesiologist, a theatre-nursing representative, a representative from simulation industry, a patient, a medical student, a junior surgical trainee, and a senior surgical trainee. Interview transcripts underwent reflexive thematic analysis using an inductive and constructivist framework (NVIVO software, NVIVO 12, QSR International). RESULTS: Four themes emerged: the 'need' for SBA, the concept of a 'minimum standard', the 'optimum design' of an SBA framework, and 'fairness'. SBA is a potential solution to challenges in the current training environment. It emerged that it should not replace trainer judgement, but could ensure that trainees meet a minimum operative competency standard. SBA should be used to identify underperforming trainees early in training to provide targeted remediation. The application of SBA in high-stakes settings such as trainee selection, autonomy granting, and end-of training certification has perceived benefits over current assessment methods. CONCLUSIONS: This study builds on findings from prior research to explore factors regarding the acceptable use of simulation as an assessment method in surgical training, including perspectives from a broad range of stakeholder representatives. Findings can inform the development of simulation-based assessment curricula in surgical training.

Surgical Management of Idiopathic Perianal Fistulas: A Systematic Review and Meta-Analysis.

BACKGROUND: Perianal fistula is a common colorectal condition with an incidence of 9 per 100,000. Many surgical treatments exist, all aiming to eliminate symptoms with minimal risk of recurrence and impact upon continence. Despite extensive evaluation of the therapeutic modalities, no clear consensus exists as to what is the gold standard approach. This systematic review aimed to examine all available evidence pertaining to the surgical management of perianal fistulas. Primary outcomes examined were recurrence and incontinence. SUMMARY: This study was conducted according to PRISMA guidelines. Primary outcomes were analyzed for each group and expressed as pooled odds ratio with confidence intervals of 95%. 687 studies were identified from which 28 relevant studies were included. There was no significant difference in rates of incontinence identified between various surgical approaches. Glues and plugs show higher recurrence rates. Newer treatments continue to emerge with promise but lack supporting evidence of benefit over conventional therapies. Key Messages: While we await more robust randomized data, we will continue to proceed cautiously trying to offset the benefits of fistula healing against the inherent risk of altered continence.

Evaluation of a Novel Ostomy Barrier Ring with Assisted Flow for Individuals with an Ileostomy.

OBJECTIVE: To determine the performance and user experience of a novel ostomy barrier ring over a 4-week period. METHODS: This single-arm investigation conducted across three clinical sites included 25 adult participants with an ileostomy for 3 months or longer. The participants used their standard ostomy pouching appliance along with a novel barrier ring for a period of 4 weeks. Skin condition was assessed using the Ostomy Skin Tool. Change in skin condition over the study period was recorded for each participant. The participants' experience in using the novel barrier ring was measured using a five-point Likert-type scale. RESULTS: Twenty of the 25 participants (80%) completed the trial. Of those participants, the median Ostomy Skin Tool score at both the beginning (range, 0-8) and end was 0 (range, 0-6). In terms of skin condition, 7 participants experienced an improvement in skin condition, 11 experienced no change, and 2 got worse. A median score of 5 out of 5 was recorded for all questions relating to user experience. CONCLUSIONS: Although not statistically significant, there was a clear trend toward improvements in peristomal skin condition using the novel barrier ring, even for participants who were already using a barrier ring. User feedback was positive with respect to comfort, device handling, and the perception of the device's ability to protect the skin. Further, most participants who already used a barrier ring indicated that the novel barrier ring would result in a longer wear time.

A systematic review of simulation in open abdominal aortic aneurysm repair.

OBJECTIVE: Concerns about the long-term durability of endovascular aortic aneurysm repair and the requirement for explantation of stents in the case of infection demonstrate the continued need for open abdominal aortic aneurysm (AAA) repair. However, with the increased complexity and decreasing volume of open cases performed, maintenance of skills and training of younger surgeons are challenging. The aim of this review was to identify and to examine studies pertaining to open AAA simulation, with focus on methods and outcomes. METHODS: We performed a systematic review of the literature to identify primary research pertaining to open AAA repair through the use of simulators. The primary outcome was to identify predominant modes of simulator design and validated assessment tools that could demonstrate improvement in trainee skills. Secondary outcomes included identifying participant numbers needed to power studies and whether tools not validated externally contributed to the studies. RESULTS: There were 309 unique papers identified, from which five papers met the inclusion criteria. The selected papers used a combination of synthetic (commercial and homemade) and cadaveric simulators. A variety of validated and nonvalidated assessment metrics were used, including Objective Structured Assessment of Technical Skills, global rating scales, and realism surveys. Three of the five papers used blinding as part of their assessments. Mean participant numbers were 30.8 ± 25.7 and with the exception of one paper consisted entirely of surgical trainees in dedicated general or vascular surgery training programs. CONCLUSIONS: Several options are currently available for open AAA simulation, all of which demonstrate improved scoring metrics after simulator use. Validated scoring systems, the Objective Structured Assessment of Technical Skills in particular, were most frequently used to deliver objective results. Whereas junior trainees derive the most benefit, senior trainees also showed significant improvements, demonstrating that simulation benefits all levels of surgical trainees. Low numbers of participants were sufficient to achieve statistical benefit within individual studies.

Strictureplasty versus bowel resection for the surgical management of fibrostenotic Crohn's disease: a systematic review and meta-analysis.

BACKGROUND: Strictureplasty (SPX) conserves bowel length and minimizes the risk of developing short bowel syndrome in patients undergoing surgery for Crohn's disease (CD). However, SPX may be associated with a higher risk of recurrence compared with bowel resection (BR). AIM: We sought to compare morbidity and recurrence following SPX and BR in patients with fibrostenotic CD. METHODS: A systematic review was performed according to PRISMA and MOOSE guidelines. Observational studies that compared outcomes of CD patients undergoing either SPX or BR were identified. Log hazard ratios (InHR) for recurrence-free survival (RFS) and their standard errors were calculated from Kaplan-Meier plots or Cox regression models and pooled using the inverse variance method. Dichotomous variables were pooled as odds ratios (OR) using the Mantel-Haenszel method. Continuous variables were pooled as weighted mean differences. RESULTS: Twelve studies of 1026 CD patients (SPX n = 444, 43.27%; BR with or without SPX n = 582, 56.72%) were eligible for inclusion. There was an increased likelihood of disease recurrence with SPX than with BR (OR 1.61; 95% CI, 1.03, 2.52; p = 0.04; I2 = 0%). Patients who had a SPX alone had a significantly reduced RFS than those who underwent BR (HR 1.47; 95% CI, 1.08, 2.01; p = 0.02; I2 = 0%). There was no difference in morbidity between the groups (OR 0.58; 95% CI, 0.26, 1.28; p = 0.18; I2 = 0%). CONCLUSION: SPX should only be performed in those patients with Crohn's strictures that are at high risk for short bowel syndrome and intestinal failure; otherwise, BR is the favored surgical technique for the management of fibrostenotic CD.

Endoscopic management versus transanal surgery for early primary or early locally recurrent rectal neoplasms-a systematic review and meta-analysis.

BACKGROUND: Both endoscopic techniques and transanal surgery are viable options that allow organ preservation for early rectal neoplasms. Whilst endoscopic approaches are less invasive and carry less morbidity, it is unclear whether they are as oncologically effective. AIM: To compare endoscopic techniques with transanal surgery in the management of early rectal neoplasms. METHODS: A systematic literature search was performed for randomised and observational studies comparing these techniques. The pre-specified main outcomes measured were en bloc and R0 resection rates and recurrence. Pair-wise meta-analysis was performed. RESULTS: This review included 1044 patients. Transanal surgery had increased R0 resection rates (odds ratio (OR) 2.66; 95% CI 1.64; 4.31; p < 0.001) versus endoscopic management. The latter was associated with higher rates of incomplete resection (OR 2.25; 95% CI 1.14, 4.46; p = 0.02) and further intervention (OR 1.78; 95% CI 1.09, 2.88; p = 0.02). There was no difference in the rates of late recurrence (OR 1.01; 95% CI 0.53, 1.91; p = 0.99) or further major surgery (OR 0.87; 95% CI 0.39, 1.94; p = 0.73) between the groups. Endoscopic treatment was associated with a shorter operating time (weighted mean difference (WMD) - 12.08; 95% CI - 18.97, - 5.19; p < 0.001) and LOS (WMD - 1.94; 95% CI - 2.43, - 1.44; p < 0.001), as well as lower rates of urinary retention post-operatively (OR 0.12; 95% CI 0.02, 0.63; p = 0.01). CONCLUSION: Endoscopic techniques should be favoured in the setting of benign early rectal neoplasms given their decreased morbidity and increased cost-effectiveness. However, where malignancy is suspected transanal surgery should be the preferred option given the superior R0 resection rate.