A Video-Based Procedure-Specific Competency Assessment Tool for Minimally Invasive Esophagectomy.

Importance: Minimally invasive esophagectomy (MIE) is a complex procedure with substantial learning curves. In other complex minimally invasive procedures, suboptimal surgical performance has convincingly been associated with less favorable patient outcomes as assessed by peer review of the surgical procedure. Objective: To develop and validate a procedure-specific competency assessment tool (CAT) for MIE. Design, Setting, and Participants: In this international quality improvement study, a procedure-specific MIE-CAT was developed and validated. The MIE-CAT contains 8 procedural phases, and 4 quality components per phase are scored with a Likert scale ranging from 1 to 4. For evaluation of the MIE-CAT, intraoperative MIE videos performed by a single surgical team in the Esophageal Center East Netherlands were peer reviewed by 18 independent international MIE experts (with more than 120 MIEs performed). Each video was assessed by 2 or 3 blinded experts to evaluate feasibility, content validity, reliability, and construct validity. MIE-CAT version 2 was composed with refined content aimed at improving interrater reliability. A total of 32 full-length MIE videos from patients who underwent MIE between 2011 and 2020 were analyzed. Data were analyzed from January 2021 to January 2023. Exposure: Performance assessment of transthoracic MIE with an intrathoracic anastomosis. Main Outcomes and Measures: Feasibility, content validity, interrater and intrarater reliability, and construct validity, including correlations with both experience of the surgical team and clinical parameters, of the developed MIE-CAT. Results: Experts found the MIE-CAT easy to understand and easy to use to grade surgical performance. The MIE-CAT demonstrated good intrarater reliability (range of intraclass correlation coefficients [ICCs], 0.807 [95% CI, 0.656 to 0.892] for quality component score to 0.898 [95% CI, 0.846 to 0.932] for phase score). Interrater reliability was moderate (range of ICCs, 0.536 [95% CI, -0.220 to 0.994] for total MIE-CAT score to 0.705 [95% CI, 0.473 to 0.846] for quality component score), and most discrepancies originated in the lymphadenectomy phases. Hypothesis testing for construct validity showed more than 75% of hypotheses correct: MIE-CAT performance scores correlated with experience of the surgical team (r = 0.288 to 0.622), blood loss (r = -0.034 to -0.545), operative time (r = -0.309 to -0.611), intraoperative complications (r = -0.052 to -0.319), and severe postoperative complications (r = -0.207 to -0.395). MIE-CAT version 2 increased usability. Interrater reliability improved but remained moderate (range of ICCs, 0.666 to 0.743), and most discrepancies between raters remained in the lymphadenectomy phases. Conclusions and Relevance: The MIE-CAT was developed and its feasibility, content validity, reliability, and construct validity were demonstrated. By providing insight into surgical performance of MIE, the MIE-CAT might be used for clinical, training, and research purposes.

Remoteness from urban centre does not affect gastric cancer outcomes with established care pathway to specialist centre.

BACKGROUND: Patients living in rural communities experience difficulty accessing specialized medical care. Rural patients with cancer present with more advanced disease, have reduced access to treatment and have poorer overall survival than urban patients. This study's aim was to evaluate outcomes of patients with gastric cancer living in rural and remote areas versus urban and suburban communities in the context of an established care corridor to a tertiary care centre. METHODS: All patients treated for gastric cancer at the McGill University Health Centre during 2010-2018 were included. Travel, lodging and cancer care coordination were provided for patients from remote and rural areas and coordinated centrally by dedicated nurse navigators servicing these regions. Statistics Canada's remoteness index was used to categorize patients into a rural and remote group and an urban and suburban group. RESULTS: A total of 274 patients were included. Compared with patients from urban and suburban areas, patients from rural and remote areas were younger and their clinical tumour stage was higher at presentation. The number of curative resections and palliative surgeries and rate of nonresection were comparable (p = 0.96). Overall, disease-free and progression-free survival were comparable between the groups, and having locally advanced cancer correlated with poorer survival (p < 0.001). CONCLUSION: Although patients with gastric cancer from rural and remote areas had more advanced disease at presentation, their treatment patterns and survival were comparable to those of patients from urbanized areas in the context of a publicly funded care corridor to a multidisciplinary specialist cancer centre. Equitable access to health care is necessary to diminish any preexisting disparities among patients with gastric cancer.

Changes in Perioperative Platelet Lymphocyte Ratio Predict Survival in Oesophago-Gastric Adenocarcinoma.

BACKGROUND: Platelet to lymphocyte ratio (PLR) is associated with survival in oesophageal cancer. We explored whether PLR changes during different stages of treatment correlate with survival outcomes. METHODS: A retrospective single-centre study was performed. Consecutive patients who received neoadjuvant chemotherapy followed by surgery for oesophageal adenocarcinoma were identified. Changes in PLR were calculated during two time periods: the first spanning the neoadjuvant period (T1); the second the perioperative period (T2). Differences in PLR were calculated for clinicopathological variables during both T1 and T2 and for variables with regards to their association with median overall survival (OS). Variables found to be significant on univariate analysis were included in a multivariate Cox regression model. Using ROC analysis, optimal cut-offs for PLR changes were identified and plotted on a Kaplan-Meir curve. RESULTS: Of the 370 patients identified, 110 (29.7%) were included in the analysis. During T1 a positive correlation was noted between higher positive lymph node ratio and PLR change. During T2, PLR change was positively higher in patients who suffered major postoperative complications. Median survival for the cohort as a whole was 42.3 months and 5-year OS was 57.3%. Survival at 5 years was associated with lower PLR changes during T2. On univaraite analysis, median OS was significantly less for patients with a tumour size > 3 cm, poor differentiation and change in PLR ≥ 43.4 during T2. The latter two variables remained significant on multivariate analysis. Using the same PLR threshold, the survival curve comparing changes in PLR during T2 remained statistically significant. CONCLUSION: Perioperative PLR changes are highly prognostic of survival outcomes in patients treated for oesophageal adenocarcinoma.

Treatment of anastomotic leak after esophagectomy: insights of an international case vignette survey and expert discussions.

Anastomotic leak (AL) is a severe complication after esophagectomy. Clinical presentation of AL is diverse and there is large practice variation regarding treatment of AL. This study aimed to explore different AL treatment strategies and their underlying rationale. This mixed-methods study consisted of an international survey among upper gastro-intestinal (GI) surgeons and focus groups with expert upper GI surgeons. The survey included 10 case vignettes and data sources were integrated after separate analysis. The survey was completed by 188 respondents (completion rate 69%) and 6 focus groups were conducted with 20 international experts. Prevention of mortality was the most important goal of primary treatment. Goals of secondary treatment were to promote tissue healing, return to oral feeding and safe hospital discharge. There was substantial variation in the preferred treatment principles (e.g. drainage or defect closure) and modalities (e.g. stent or endoVAC) within different presentations of AL. Patients with local symptoms were treated by supportive means only or by non-surgical drainage and/or defect closure. Drainage was routinely performed in patients with intrathoracic collections and often combined with defect closure. Patients with conduit necrosis were predominantly treated by resection and reconstruction of the anastomosis or by esophageal diversion. This mixed-methods study shows that overall treatment strategies for AL are determined by vitality of the conduit and presence of intrathoracic collections. There is large variation in preferred treatment principles and modalities. Future research may investigate optimal treatment for specific AL presentations and aim to develop consensus-based treatment guidelines for AL after esophagectomy.

Reciprocal peer coaching for practice improvement in surgery: a pilot study.

BACKGROUND: Peer coaching has been associated with much higher rates of practice changes and new skill implementation compared to common used modalities but bilateral peer coaching structures where seniority is not a requirement to coach have not been studied. The purpose of this study was to implement and evaluate a reciprocal peer coaching pilot program for practicing surgeons to inform future coaching program design. METHODS: A multicenter reciprocal peer surgical coaching program was designed according to the framework developed from previous studies by our group. The coach-coachee matching process was voluntary and autonomous. All participants received basic coaching skills training. Pairs were instructed to complete two coaching sessions, alternating between the coach or coachee role for each session. Data were collected through questionnaires and structured interviews. RESULTS: Twenty-two participants enrolled in the pilot study and completed the coach training (88% enrollment rate). During the first wave of COVID-19, 12 participants withdrew. Of the five pairs that completed the program, three pairs were composed of general surgeons, one of orthopedic surgeons, and one ophthalmologic surgeon. Three sessions were conducted live in the OR, five virtually, and one involved an in-person discussion. Overall satisfaction with the program was high and all participants expectations were met. Participants were significantly more likely to predict "routinely" asking for feedback from their partner after study completion (6, 66%) compared to pre-intervention (p = 0.02). CONCLUSION: This pilot study supports the feasibility of a peer coaching model for surgeons in practice that emphasized reciprocity and participant autonomy. These key elements should be considered when designing future coaching programs.

Development of a formative feedback tool for transanal total mesorectal excision.

INTRODUCTION: Transanal total mesorectal excision (TaTME) is a novel procedure in the treatment of rectal cancer. Current training models for TaTME suggest a period of proctored cases, but no structured feedback tool exists to guide operators during the learning phase. The objective of this study therefore was to develop a formative feedback tool for the critical steps of the transanal portion of TaTME. METHODS: A two-round Delphi study by TaTME experts was conducted to determine the items to be included in the formative feedback tool. Participants rated each step from a prepared list using a Likert scale from 1 (Not relevant) to 5 (Very relevant) with the option to suggest additional steps. Responses to the first round were presented in the second round, where participants rated the revised list of steps. Consensus was defined as > 80% of participants rating the step as 4 or 5 (out of 5). Items were combined when appropriate to avoid redundancy. Rating anchors describing performance (on a 5-point scale) were then developed for each step. The final tool was recirculated and participants rated the finished product on its feasibility and usefulness. RESULTS: Twenty-six TaTME experts were contacted for participation. Fifteen experts (58%) participated in the first round of the study, and eleven (42%) participated in the second round. The majority (14, 93%) had completed fellowship training in colorectal surgery. The first round of the Delphi study contained 34 items, and 32 items met inclusion criteria after the second round. Redundant items were combined into 15 items that comprised the final tool. Out of eight respondents to the feasibility survey, all believed the feedback tool enhances the feedback of learners and would use it for training purposes if available. CONCLUSION: This work describes the development of a novel consensus-based formative feedback tool specific to TaTME.

Considerations for designing and implementing a surgical peer coaching program: an international survey.

BACKGROUND: Surgical peer coaching has been associated with high rates of practice change but remains largely unutilized. The purpose of this study was to survey surgeons internationally to investigate attitudes regarding peer coaching and to identify any international differences to inform the design of future coaching programs. METHODS: Practicing surgeons in general surgery or related subspecialties were eligible to participate. Invitations to complete the survey were distributed through 13 surgical associations, social media, and personal e-mail invitations. Responses were obtained between June 1st and August 31st, 2020. RESULTS: A total of 521 surveys were collected. The majority of participants practiced in North America (263; 50%) with remaining respondents from Asia (81; 16%), Europe (34;7%), South America (21; 4%), Africa (17; 3%), and Oceania (6; 1%). Duration of practice was equally distributed across 4 intervals (0-5 years; 6-15 years; 16-25 years; > 25 years). Respondents most frequently identified as general surgeons (290; 67%) and 325 (75%) were male. Awareness of peer coaching was reported by 275 (53%) respondents, with 197 (44%) never seeking formal feedback from peers. The majority of respondents (372; 84%) would be willing to participate in a peer coaching program, with monthly interactions the most desirable frequency reported (193; 51%). Coaching in the operating room was preferred by most participants (360; 86%). Few respondents (67; 14%) would accept coaching from someone unknown to them. Participants identified key coaching program elements as: feedback kept private and confidential (267; 63%); opportunity to provide feedback to the coach (247; 59%); personalized goal setting (244; 58%); and the option to choose one's own coach (205; 49%). The most commonly cited potential barrier to participation was logistical constraints (334; 79%). CONCLUSION: This international survey of practicing surgeons demonstrated that peer feedback is rarely used in practice, but there is high interest and acceptance of the peer coaching model for continuous professional development. Findings regarding preferred program structure may be useful to inform the design of future peer coaching programs.

FLOT-regimen Chemotherapy and Transthoracic en bloc Resection for Esophageal and Junctional Adenocarcinoma.

BACKGROUND AND AIMS: The FLOT4-AIO trial established the FLOT regimen as a compelling option for gastric, junctional and esophageal adenocarcinoma. Data on FLOT with en-bloc transthoracic esophagectomy (TTE) are limited. This study explored operative complications, tolerance, toxicity, physiological impact, and oncologic outcomes. STUDY DESIGN: An observational cohort study on consecutive patients at 3 tertiary centers undergoing FLOT and TTE. Toxicity, operative complications (per ECCG definitions), tumor regression grade (TRG), recurrences and survival were documented, as well as pre and post FLOT assessment of sarcopenia and pulmonary physiology. RESULTS: 175 patients (cT2-4a, Nany) commenced treatment, 84% male, median age 65, 94% cT3/T4a, 73% cN+. 89% completed 4 preoperative cycles, and 35% all cycles. Grade 3/4 toxicities included neutropenia (12%), diarrhoea (13%), and infection (15%). Sarcopenia increased from 18% to 37% (P = 0.020), and diffusion capacity (DLCO) decreased by 8% (-34% + 25%; P < 0.010). On pathology, ypT3/4 was 59%, and ypN+54%, with 10% TRG 1, 14% TRG 2, and 76% TRG3-5, and R0 95%. 161 underwent TTE, with an in-hospital mortality of 0.6%, 24%-pneumonia, 11%-anastomotic leak, and Clavien Dindo ≥III in 27%. At a median follow up of 12 months (1-85), 33 relapsed, 8 (5%) locally, and 3yr survival was 60%. CONCLUSION: FLOT and en bloc TTE was safe, with no discernible impact on operative complications, with 24% having a major pathologic response. Caveats include a limited pathologic response in the majority, and negative impact on muscle mass and lung physiology, and low use of adjuvant cycles. These data may provide a real-world benchmark for this complex care pathway.

Transition from open to minimally invasive en bloc esophagectomy can be achieved without compromising surgical quality.

BACKGROUND: En bloc esophagectomy results in higher lymph node (LN) retrieval than standard esophagectomy. Minimally invasive esophagectomy (MIE) has gained traction due to improved short-term outcomes, but many large series report LN yields well below the international benchmark of 23. We sought to determine if an established approach to open en bloc resection can be safely transferred to MIE using LN yield as a quality benchmark. METHODS: An open approach to en bloc esophagectomy (OE) was established over 5 years (~ 300 cases) before en bloc MIE was introduced in 2010. Patients undergoing curative-intent en bloc Ivor-Lewis and McKeown esophagectomy for cancer from 2010 to 2019 by a single surgeon with formal minimally invasive surgery training were identified from a prospectively collected database. Mann-Whitney U and χ2 tests and cumulative sum analysis were used for statistical analysis. "Failure" was defined as LN yield less than AJCC's 8th edition guidelines: 10 LNs for pT1 cancers, 20 for pT2 and 30 for pT3-4. RESULTS: A total of 269 esophageal resections met inclusion criteria [193(72%) OE; 76(28%) MIE]. Age, sex, BMI and comorbidities were comparable between groups. Tumors were larger and more often locally advanced in OE. Median LN retrieval was sufficient by international standards in both groups [OE:34(27-46); MIE:28(22-39); p = 0.01]. "Failures" occurred in 33(17%) of OE and 12(16%) MIE cases (p = 0.63). No learning effect was observed for LN yield. R0 resection rate was comparable [OE:191(99%); MIE:73(96%); p = 0.90]. Operative time was longer for MIE [275(246-300)] than OE [240(210-270) minutes], p < 0.0001, while estimated blood loss (OE:350(250-500)mL; MIE:300(200-400)mL; p = 0.02] and length of stay [OE:8(6-13); MIE7(6-9) days; p = 0.02] were higher for OE. Morbidity and mortality were comparable between groups and LN yield did not impact survival. CONCLUSIONS: Under appropriate conditions, an established approach to open en bloc esophagectomy can be safely transferred to MIE without compromising surgical quality.

Identifying optimal program structure, motivations for and barriers to peer coaching participation for surgeons in practice: a qualitative synthesis.

BACKGROUND: Continuous advancement of surgical skills is of utmost importance to surgeons in practice, but traditional learning activities without personalized feedback often do not translate into practice changes in the operating room. Peer coaching has been shown to lead to very high rates of practice changes and utilization of new skills. The purpose of this study was to explore the opinions of practicing surgeons regarding the characteristics of peer coaching programs, in order to better inform future peer coaching program design. METHODS: Using a convenience sample, practicing general surgeons were invited to participate in focus group interviews. Allocation into groups was according to years in practice. The interviews were conducted using open-ended questions by trained facilitators. Audio recordings were transcribed and coded into themes by two independent reviewers using a grounded theory approach. RESULTS: Of 52 invitations, 27 surgeons participated: 74% male; years in practice: < 5 years: 33%; 5-15 years: 26%; > 15 years: 41%. Three main themes emerged during coding: ideal program structure, motivations for participation, and barriers to implementation. For the ideal structure of a peer coaching program all groups agreed coaching programs should be voluntary, involve bidirectional learning, and provide CME credits. Live, in situ coaching was preferred. Motivations for coaching participation included: desire to learn new techniques (48%), remaining up to date with the evolution of surgical practice (30%) and improvement of patient outcomes (18%). Barriers to program implementation were categorized as: surgical culture (42%), perceived lack of need (26%), logistical constraints (23%) and issues of coach-coachee dynamics (9%). CONCLUSION: Peer coaching to refine or acquire new skills addresses many shortcomings of traditional, didactic learning modalities. This study revealed key aspects of optimal program structure, motivations and barriers to coaching which can be used to inform the design of successful peer coaching programs in the future.

P338: summarizing measures of proficiency in transanal total mesorectal excision-a systematic review.

INTRODUCTION: Transanal total mesorectal excision (TaTME) is technically challenging even for experienced colorectal surgeons and there may be a higher risk of complications during learning. Determining when a surgeon is ready to safely perform this technique independently remains a matter of debate. Therefore, the objective of this study was to systematically summarize the available evidence regarding measures of proficiency in TaTME for rectal adenocarcinoma. METHODS: A systematic search of MEDLINE, Embase, PubMed Epub records, Biosis previews, Scopus, and Cochrane Library databases was performed according to PRISMA guidelines. All English and French language studies published between 2010 and 2018 that described proficiency metrics for TaTME were included. Study heterogeneity precluded meta-analysis, and therefore qualitative synthesis was performed. The primary outcomes were the methodology and measures used to define proficiency, and the number of cases needed to achieve proficiency. RESULTS: Of 994 citations, five studies met inclusion criteria. Of these, only two used objective measures to define proficiency. These studies evaluated patient outcomes and defined proficiency through cumulative sum (CUSUM) analysis of the primary outcome(s): post-operative complications and TME quality. Two studies reported expert consensus to establish recommendations using a combination of electronic survey distributed to colorectal surgeons and consensus conferences with TaTME experts from 7 to 8 different countries. One study defined the learning phase as 16 months of TaTME practice, or the first 27 cases. Stated case volumes needed to achieve proficiency varied widely. Studies using objective outcome measures reported threshold volumes of 40 and 51 cases, respectively, while expert consensus studies recommended needing 6-30 procedures. CONCLUSIONS: Significant heterogeneity exists regarding the determination of proficiency benchmarks for TaTME. Expert consensus documents recommend lower case numbers to obtain proficiency than those defined by objective measures, suggesting greater experience may be required than generally thought.

The Effect of Preoperative Anemia and Perioperative Transfusion on Surgical Outcomes After Gastrectomy for Gastric Cancer.

BACKGROUND: The aim of this study is to examine the interaction between preoperative anemia and perioperative transfusions with postoperative morbidity and mortality among patients undergoing gastrectomy for cancer. MATERIALS AND METHODS: The American College of Surgeons National Surgical Quality Improvement Program database was queried from 2005 to 2016. Restricted cubic splines modeled the nonlinear relationship between preoperative hematocrit (Hct) and 30-day overall morbidity, sepsis, and mortality. Preoperative Hct was categorized based on cut points for the three models. Multiple regression modeling examined the interactive effect of preoperative anemia and postoperative transfusion on surgical outcomes. RESULTS: Among 9936 included patients, complication incidence was 38.9% (sepsis 12.7%; mortality 6.0%). Preoperative Hct cut points were identified at 29 and 42. Hct <29 was associated with higher risk of morbidity (OR 2.47, 95%CI 2.10-2.93). Postoperative transfusion was associated with lower risk of morbidity for Hct <29 (OR 0.56, 95%CI 0.43-0.73) but increased risk between 29 and 42 (OR 1.59, 95%CI 1.21-2.08). Similar relationships were found for sepsis and mortality. CONCLUSIONS: Preoperative Hct <29 is associated with an increased risk of surgical complications after gastrectomy for cancer and perioperative transfusions appear to be beneficial for Hct <29 only. There may be a role for better optimization of red cell mass among high-risk patients before gastrectomy for cancer.

Implementation and Effectiveness of Coaching for Surgeons in Practice - A Mixed Studies Systematic Review.

INTRODUCTION: Despite recent changes to medical education, surgical training remains largely based on the apprenticeship model. However, after completing training, there are few structured learning opportunities available for surgeons in practice to refine their skills or acquire new skills. Personalized observation with feedback is rarely a feature of traditional continuing medical education learning. Coaching has recently been proposed as a modality to meet these educational gaps; however, data are limited, and few coaching programs presently exist. The purpose of this study is to summarize the characteristics of coaching programs for surgeons in practice including participant satisfaction, program outcomes, and barriers to implementation, in the published literature. METHODS: A mixed studies systematic review was conducted according to PRISMA guidelines to identify all original studies describing or investigating coaching for practicing surgeons up to 06/2019. Quantitative analysis was used to summarize numerical data, and qualitative analysis using grounded theory methodology for descriptive data was used to summarize the results into themes across studies. RESULTS: After identification of articles, 27 were included in the final synthesis. Twenty-six articles described execution of a coaching program. Programs varied widely with 18/26 focusing on teaching new skills, and the remainder on refinement of skills. Thematic analysis identified 2 major data categories that guided deeper analysis: outcomes of and barriers to coaching. Of the 16 (62%) programs that reported outcomes of coaching, 42% to 100% of participants reported changes in clinical practice directly associated with coaching. Positive satisfaction after completion of a program was reported by 82% to 100% of participants. Reported barriers to participating in a coaching program emerged along 3 main themes: logistical constraints, surgical culture, and perceived lack of need. CONCLUSIONS: Coaching for surgeons in practice is highly rated by participants and often results in clinical practice changes, while cultural and logistical issues were identified as barriers to implementation. A better understanding of these factors is required to guide coaching program development and implementation.

Modern era surgical outcomes of elective and emergency giant paraesophageal hernia repair at a high-volume referral center.

INTRODUCTION: Repair of giant paraesophageal hernia (PEH) has historically been associated with significant morbidity and mortality such that elective repair is only offered to symptomatic patients. Recent reports suggest modern era outcomes have improved such that elective repair may now be safer than historically thought. Furthermore, the morbidity of emergency surgery may still be significant. These changes may have important implications for patient selection for elective repair. The objectives of this study were to determine and compare modern era surgical outcomes after elective and emergency repair of giant PEHs at a high-volume tertiary care center. METHODS: A retrospective review was conducted for all Type II-IV giant PEH repairs performed between 1 January 2012 and 31 December 2017. Type 1 hiatal hernias, fundoplication for reflux, and any co-surgery other than cholecystectomy were excluded from the final analysis. Baseline patient demographics, operative details, postoperative complications within 30 days and in-hospital or 30-day mortality were tabulated from the electronic medical record. Data were reported as median (interquartile range) unless otherwise specified. RESULTS: A total of 352 cases were reviewed, of which 204 met inclusion criteria (18 emergency, 186 elective). Eight had Type II PEH, 146 had Type III, and 50 had Type IV. Median length of stay was shorter in the elective group [1 (1) day elective vs. 5 (7) days emergency, p < 0.0001], and emergency patients were less likely to return directly to their original residence at discharge (13, 72% emergency vs 185, 99.4% elective, p < 0.0001). There were significantly more major complications (Clavien-Dindo score ≥ 3) in the emergency group (5, 28% emergency vs. 10, 5% elective, p = 0.005). There were no perioperative deaths in either group. Morbidity and mortality in both groups were less than historically reported. CONCLUSIONS: Informed consent discussions and patient selection for repair of giant PEHs should reflect modern era and institution-specific outcomes.

Comparison of Dor and Nissen fundoplication after laparoscopic paraesophageal hernia repair.

BACKGROUND: Fundoplication is performed routinely during laparoscopic repairs of a paraesophageal hernia, but the degree of fundoplication remains controversial. The purpose of this study is to assess postoperative dysphagia and reflux after a Dor versus a Nissen fundoplication in patients undergoing laparoscopic repair of giant paraesophageal hernias. METHODS: We performed a retrospective cohort study of all patients undergoing laparoscopic repair of giant paraesophageal hernias with Nissen or Dor fundoplication between January 2012 and December 2017 at a high-volume center, excluding revisional and emergency cases. Primary outcomes were reflux and dysphagia at 1 and 6 months. Severe dysphagia was defined as intolerance to liquids. Balanced cohorts were created using coarsened exact matching. RESULTS: A total of 106 patients were included, and 87 were matched (Dor = 48, Nissen = 58). Baseline characteristics were well balanced between matched groups. Mean follow-up duration was 17.7 months (standard deviation 16.4). The incidence of severe dysphagia at 1 month was less in the Dor group (0 of 48 vs 8 of 58, P = .02) with similar reflux symptoms. There was no difference in severe dysphagia and reflux symptoms at 6 months and at the latest visit. CONCLUSION: Dor fundoplication is associated with less severe, early postoperative dysphagia. Future studies assessing the relative importance of dysphagia and reflux on quality of life should be conducted to tailor the operative technique and optimize patient satisfaction.

Endoscopic Submucosal Dissection for Esophageal Adenocarcinoma: A North American Perspective.

BACKGROUND: Data are limited regarding the application of endoscopic submucosal dissection (ESD) in Western countries or for esophageal adenocarcinoma in any part of the world. We sought to review our experience employing ESD in patients with early esophageal cancer at a high volume North American esophageal cancer treatment center. METHODS: A prospectively maintained database of all patients with esophageal cancer treated at the McGill University Health Center was used to identify ESDs performed for adenocarcinoma between 2012 and 2016. Patient demographics, pre-resection tumor characteristics, endoscopic resection technical variables, pathologic results, and short- and long-term outcomes were recorded. RESULTS: Of 650 patients in the database, 26 underwent 27 procedures. The majority (67%) had pre-treatment EUS. There were no post-ESD bleeding events requiring re-intervention. Perforation occurred in 2/27 (7%), one of which required operative repair. Complete RO resection was achieved in 18/27(67%). Salvage laparoscopic esophagectomy was performed in six patients. At a median follow-up of 18.5 (7-35) months, cancer recurrence occurred in only one patient who subsequently underwent successful repeat ESD. CONCLUSIONS: Although technically challenging, ESD represents a safe and effective treatment of early esophageal adenocarcinoma and has the potential to become a more important tool in management of these early lesions in Western countries.

Sentinel Lymph Node Sampling for Early Gastric Cancer-Preliminary Results of A North American Prospective Study.

INTRODUCTION: Although endoscopic resection for early gastric cancer is well established, anatomical resection with regional lymphadenectomy is recommended for lesions at high risk for occult lymph node metastasis (e.g., lymphovascular invasion, poor grade, and deep submucosal invasion). However, 75-95% high-risk early gastric cancer (HR-EGC) patients ultimately have node-negative disease and could potentially have undergone organ-sparing resection. Due to the inadequacy of standard modalities to reliably rule out nodal metastases in HR-EGC patients, sentinel lymph node (SLN) sampling was developed in Asia with promising results. However, the applicability of this technique in the West has been brought into question due to potential differences in tumor histology and body habitus. This prospective study aimed to test SLN sampling for North American EGC patients. METHODS: All patients with biopsy-confirmed T0-2 N0-1 M0 gastric adenocarcinoma at the Montreal General Hospital-McGill University Health Centre were eligible for enrollment. Esophageal and GEJ cancers were excluded due to the high rate of intrathoracic lymph node involvement. Peritumoral submucosal injection with T99 radiocolloid was performed endoscopically 24-30 h prior to surgery. Methylene blue dye injection was performed after induction of anesthesia. SLN basins were identified as those having > 10% of baseline tumor radiation signal or blue color, or both. After basins were individually removed, standard laparoscopic anatomical resection was then performed with D2 lymphadenectomy. ( ClinicalTrials.gov identifier: NCT03049345). Data are presented as median (interquartile range). RESULTS: From July 2016-April 2018, 253 patients with esophagogastric adenocarcinoma were evaluated. Of these, 10 met inclusion criteria (90% male, age 66(30) years). Subtotal gastrectomy was performed in nine patients (90%) and length of stay was 4 (2) days. At least one SLN basin was identified in nine cases (90%). The median #SLN basins identified was 2(2) with a median of 5(5) total SLNs retrieved per patient. In the one case for which no SLN basins were identified, only blue dye injection was used, whereas SLNs were identified in all cases using the dual tracer method. Final T-stage was pT1b/T2 in four (40%), pT1a in two (20%), and Tx in four (40%). Two patients (20%) had lymph node metastases on final pathological analysis, both of which were identified by SLN sampling (accuracy 100%; false negative rate 0%). No adverse events related to SLN retrieval were identified. CONCLUSIONS: This study represents the first prospective feasibility evaluation of sentinel lymph node sampling for early gastric cancer in North America with promising preliminary results. The dual tracer method was superior to single agent blue dye in identifying sentinel nodal basins. Considerable further study is necessary to verify the safety and utility of SLN mapping in North American patients with early gastric adenocarcinoma.

Same day discharge for benign laparoscopic hiatal surgery: a feasibility analysis.

BACKGROUND: Advances in minimally invasive surgery and the development of enhanced recovery pathways have favored the spread of day-surgery programs. Despite laparoscopic approaches being accepted as the standard of care for benign hiatal diseases, safety and feasibility of same day discharges for laparoscopic hiatal surgeries other than fundoplication has yet to be established. OBJECTIVE: This study aimed to assess the feasibility of same day discharge for primary and revisional laparoscopic hiatal surgeries including paraesophageal hernia repairs (PEHR), fundoplication for reflux, and Heller myotomy (±diverticulectomy). METHODS: A retrospective cohort study including all patients undergoing elective laparoscopic hiatal procedures in the division of Thoracic surgery between 2011 and 2016 at McGill University Health Centre was performed. Planned day-surgery (DAYCASE) was compared to planned inpatient (INPATIENT) cohorts with respect to operative and postoperative outcomes, length of stay, readmission, and emergency room visits. RESULTS: A total of 261 patients were identified, 161 female (62%); median age 62 (20). The case distribution was: PEHR (123; 47.1%), Heller myotomy (94;36%, 7 diverticulectomy), and fundoplication (44; 16.9%). Twenty patients had revisional procedures (7.7%). Same day discharge was planned in 98 cases (38%) and was successful in 80 (81.6%). Proportion of DAYCASE increased form 12% prior to 2013 to 67% in 2016. INPATIENTs were older (median 66 vs. 60 years), and had a higher proportion of PEHR (55 vs. 34%), p < 0.05. Both cohorts were comparable in gender proportion, ASA classification, and length of surgery. Complications, readmission, and emergency visits did not differ between the two cohorts. On multivariate analysis, female gender (OR 37, 95% CI 1.46-936, p = 0.028), surgery beginning after noon (OR 5.4, 95% CI 1.1-26.9, p = 0.038), intraoperative complications (OR 20.4 95% CI 1.5-286, p = 0.025), and postoperative complications (OR 52.1, 95% CI 4.5-602, p = 0.002) were independently associated with unplanned admission. CONCLUSIONS: Day-case surgery for complex laparoscopic hiatal procedures is feasible and can be achieved in a significant number of patients without compromising safety.

The Steinberg Centre for Simulation and Interactive Learning at McGill University.

Simulation allows for learner-centered health professions training by providing a safe environment to practice and make mistakes without jeopardizing patient care. It was with this goal in mind that the McGill Medical Simulation Center was officially opened on September 14, 2006, as a partnership between McGill University, the Faculty of Medicine and its affiliated hospitals. Its mandate is to provide state-of-the-art facilities to support simulation-based medical and allied health education initiatives. Since its inception, the center, recently renamed the Steinberg Center for Simulation and Interactive Learning (SCSIL), has undergone a major expansion and logged more than 130,000 learner visits. Educational activities are offered at all levels of medical and allied health care training, and include standardized patient encounters, partial task trainers, multidisciplinary courses, and high-fidelity trainers, among many others. In addition to its educational mandate, the center also supports an active research program, programs to enhance collaboration with disciplines outside of health care to spur innovation, and community outreach initiatives.

Application of an individualized operative strategy for wedge resection of gastric gastrointestinal stromal tumors: Effectiveness for tumors in difficult locations.

BACKGROUND: There is some concern that wedge resection of gastric gastrointestinal stromal tumors is not feasible in certain anatomic locations, such as the cardia or antrum. We sought to review our experience with treatment of gastric gastrointestinal stromal tumors with a particular focus on nonanatomic wedge resections in these challenging locations. METHODS: Patients undergoing resection of gastrointestinal stromal tumors from 2000-2014 at the Montreal General Hospital were identified from a prospectively collected database, and outcomes were tabulated. An individualized operative strategy was used to guide resection based on tumor location, size, and characteristics. Disease-free survival and overall survival analyzed using the Kaplan-Meier method. Data are presented as median (range). RESULTS: We identified 59 patients who underwent operative resection for gastric gastrointestinal stromal tumors. Tumor location was fundus/body/greater curvature in 35 (59%) patients, lesser curvature in 8 (14%) patients, antrum in 8 (14%) patients, and cardia in 8 (14%) patients. Median tumor size was 4.5 cm (1.4-25 cm). The majority of cardia and antral lesions were removed with wedge resections (14/16, 87%). For cardial and antral tumors, on-table gastroscopy was used to guide the operative approach and prevent narrowing of the Gastroesophageal junction or pylorus in all patients undergoing wedge resection. Negative pathologic margins were achieved in all patients. The 5-year disease-free survival was 91% and 5-year overall survival was 95%. CONCLUSION: When selected appropriately, and under the guidance of on-table gastroscopy, laparoscopic nonanatomic wedge resection can be performed successfully in the majority of cases, even for gastrointestinal stromal tumors near the GEJ or pylorus, with excellent oncologic outcomes.