Combined mechanical and oral antibiotic bowel preparation is associated with prolonged recurrence-free survival following surgery for colorectal cancer.

BACKGROUND AND OBJECTIVES: Recent studies suggest that bacteria influence the pathogenesis of primary colorectal cancer (CRC), yet their role in recurrence after resection is largely unknown. We have discovered that collagenase-producing bacteria promote cancer recurrence in mice, and that antibiotic bowel decontamination decreases colonization of these same organisms in humans. We hypothesized that preoperative combined mechanical and oral antibiotic bowel preparation would improve disease-free survival (DFS) in patients undergoing surgery for CRC. METHODS: We reviewed a cancer registry of patients treated for CRC at a tertiary center. Patients who received bowel preparation were compared to those that did not via a 1:1-propensity score matched for follow-up, age, sex, BMI, stage, location, chemoradiation, infection, anastomotic leak, and blood transfusion. RESULTS: One thousand two hundred and seventy-nine patients met inclusion criteria. Following propensity score matching, 264 patients receiving bowel prep were matched to 264 patients who did not. Kaplan-Meier estimates showed that patients who received bowel prep had a significantly improved 5-year DFS compared to those that did not (76.3% vs. 64.2%; p < .01). Cox regression demonstrated that bowel prep was associated with improved DFS (HR, 0.57; 95% CI, 0.37-0.89; p < .01). CONCLUSION: Combined mechanical and oral antibiotic bowel preparation is independently associated with improved recurrence-free survival in patients undergoing surgery for CRC.

The Hancock® Valved Conduit for Right Ventricular Outflow Tract Reconstruction in Sheep for Assessing New Devices.

BACKGROUND AND AIM OF THE STUDY: Xenograft conduits have been used successfully to repair congenital heart defects, but are prone to failure over time. Hence, in order to improve patient outcomes, better xenografts are being developed. When evaluating a conduit's performance and safety it must first be compared against a clinically available control in a large animal model. The study aim was to evaluate a clinically available xenograft conduit used in right ventricular outflow tract (RVOT) reconstruction in a sheep model. METHODS: RVOT reconstruction was performed in 13 adult and juvenile sheep, using the Medtronic Hancock® Bioprosthetic Valved Conduit (Hancock conduit). The method had previously been used on patients, and a newly modified variant termed 'RVOT Extraction' was employed to facilitate the surgical procedure. Animals were monitored over predetermined terms of 70 to 140 days. Serial transthoracic echocardiography, intracardiac pressure measurements and angiography were performed. On study completion the animals were euthanized and necropsies performed. RESULTS: Two animals died prior to their designated study term due to severe valvular stenosis and distal conduit narrowing, respectively. Thus, 11 animals survived the study term, with few or no complications. Generally, maximal and mean transvalvular pressure gradients across the implanted conduits were increased throughout the postoperative course. Among 11 full-term animals, seven conduits were patent with mild or no pseudointimal proliferation and with flexible leaflets maintaining the hemodynamic integrity of the valve. CONCLUSIONS: RVOT reconstruction using the Hancock conduit was shown to be successful in sheep, with durable and efficient performances. With its extensive clinical use in patients, and ability for long-term use in sheep (as described in the present study) it can be concluded that the Hancock conduit is an excellent control device for the evaluation of new xenografts in future preclinical studies.

Multisite Implementation of an American College of Surgeons Geriatric Surgery Quality Improvement Initiative.

BACKGROUND: The American College of Surgeons (ACS) Coalition for Quality in Geriatric Surgery (CQGS) identified standards of surgical care for the growing, vulnerable population of aging adults in the US. The aims of this study were to determine implementation feasibility for 30 selected standards, identify barriers and best practices in their implementation, and further refine these geriatric standards and verification process. STUDY DESIGN: The CQGS requested participation from hospitals involved in the ACS NSQIP Geriatric Surgery Pilot Project, previous CQGS feasibility analyses, and hospitals affiliated with a core development team member. Thirty standards were selected for implementation. After implementation, site visits were conducted, and postvisit surveys were distributed. RESULTS: Eight hospitals were chosen to participate. Program management (55%), immediate preoperative and intraoperative clinical care (62.5%), and postoperative clinical care (58%) had the highest mean percentage of "fully compliant" standards. Goals and decision-making (30%), preoperative optimization (28%), and transitions of care (12.5%) had the lowest mean percentage of fully compliant standards. Best practices and barriers to implementation were identified across 13 of the 30 standards. More than 80% of the institutions reported that participation changed the surgical care provided for older adults. CONCLUSIONS: This study represents the first national implementation assessment undertaken by the ACS for one of its quality programs. The CQGS pilot testing was able to demonstrate implementation feasibility for 30 standards, identify challenges and best practices, and further inform dissemination of the ACS Geriatric Surgery Verification Program.

Creation of a COVID-19 Based Educational Curriculum: A Blueprint for Redesigning Surgical Education During Times of National Crisis.

Objective: To create a COVID-19 based educational curriculum for surgical residents. Background Data: The COVID-19 pandemic has resulted in disruptions to operative volume and clinical education for surgery residents. This has placed a greater importance on didactic education. However, in the face of pandemic-related uncertainty, focusing on a traditional educational curriculum may be a challenge for surgical residents. Methods: A dedicated resident educational team was created. This team identified specific surgical resident needs, evaluated institutional resources, created a curriculum and timeline, determined a feasible implementation format, and assessed resident opinions on the impact of the curriculum via anonymous survey. Results: A 1-month long COVID-19 based curriculum was developed, which covered (1) advanced critical care and resuscitation techniques pertinent to patients with COVID-19, (2) institutional physician experience in the COVID-units, (3) ethical dilemmas in resource management, (4) triaging of operative cases during the pandemic, and (5) published and ongoing COVID-19-related surgical research. In the postimplementation survey, a majority of residents reported that the curriculum helped improve their ability to take care of patients during the pandemic, provided an opportunity for questions, alleviated anxieties and concerns, and that they preferred the COVID-19 curriculum over traditional surgical topics. Conclusions: In the midst of national crisis and significant clinical disruption, real-time adjustments to surgical education can and should occur to address resident needs. The results of our study may serve as a blueprint for implementing rapid change to resident education in the future.

Development of a conceptual model for understanding the learning environment and surgical resident well-being.

BACKGROUND: Surgeon burnout is linked to poor outcomes for physicians and patients. Several conceptual models exist that describe drivers of physician wellness generally. No such model exists for surgical residents specifically. METHODS: A conceptual model for surgical resident well-being was adapted from published models with input gained iteratively from an interdisciplinary team. A survey was developed to measure residents' perceptions of their program. A confirmatory factor analysis (CFA) tested the fit of our proposed model construct. RESULTS: The conceptual model outlines eight domains that contribute to surgical resident well-being: Efficiency and Resources, Faculty Relationships and Engagement, Meaning in Work, Resident Camaraderie, Program Culture and Values, Work-Life Integration, Workload and Job Demands, and Mistreatment. CFA demonstrated acceptable fit of the proposed 8-domain model. CONCLUSION: Eight distinct domains of the learning environment influence surgical resident well-being. This conceptual model forms the basis for the SECOND Trial, a study designed to optimize the surgical training environment and promote well-being.

Evaluation of Postoperative Functional Health Status Decline Among Older Adults.

Importance: Functional outcomes have value for older adults who undergo surgical procedures. Preventing postoperative functional decline in this patient population necessitates the identification of the factors associated with this outcome and minimizing their implications. Objectives: To assess the prevalence of functional decline 30 days after a surgical procedure among older adults 80 years or older, examine the risk factors of this decline, and identify ways to minimize this decline by addressing its mutable factors. Design, Setting, and Participants: This retrospective cohort study used patient data from the Geriatric Surgery Pilot Project, a multi-institutional data registry of the American College of Surgeons National Surgical Quality Improvement Program. Inclusion criteria were patients 80 years or older who underwent a surgical procedure that required an inpatient stay at 1 of 23 hospitals enrolled in the Geriatric Surgery Pilot Project from January 1, 2015, to December 31, 2018, and had preoperative and postoperative functional health status data. Data analysis was performed from January 7, 2019, to December 2, 2019. Exposures: Adults 80 years or older who underwent an inpatient surgical procedure. Main Outcomes and Measures: The primary outcome was 30-day postoperative functional decline defined by a change in functional health status from admission or before the surgical procedure (ie, from independent to partially or totally dependent, or from partially dependent to totally dependent). Functional health status was measured by a patient's ability to perform activities of daily living. Secondary outcomes were hospital readmission and 30-day postoperative living location. Results: Of the 2013 patients analyzed in this study, 1128 were women (56.0%) and the mean (SD) age was 84.9 (3.9) years. Functional decline at 30 days after the surgical procedure was present in 406 patients (20.2%). Prevalence of this outcome increased with age, with 337 of 1751 patients aged 80 to 89 years (19.2%) experiencing decline compared with 69 of 262 patients 90 years or older (26.3%). In a risk-adjusted model, the geriatric-specific risk factors statistically significantly associated with this outcome included preoperative mobility aid use (odds ratio [OR] 1.76; 95% CI, 1.39-2.22; P < .001) and malnutrition (OR, 1.88; 95% CI, 1.04-3.43; P = .04) as well as postoperative delirium (OR, 2.20; 95% CI, 1.60-3.02; P < .001), pressure ulcer (OR, 1.83; 95% CI, 1.02-3.30; P = .04), and mobility aid at discharge (OR, 2.49; 95% CI, 1.72-3.59; P < .001). Among patients with a 30-day functional decline, 106 (26.1%) required hospital readmission and only 219 (53.9%) were living at home compared with 388 patients (95.6%) living at home before the procedure. Conclusions and Relevance: In this study, 1 in 5 older adults experienced a functional decline that persisted 30 days after a surgical procedure, an outcome that appeared to be associated with several geriatric-specific risk factors. Future trials are needed to evaluate whether the prevention or mitigation of these factors can decrease the rates of postoperative functional decline in this patient population.

Variation in Hospital Utilization of Minimally Invasive Distal Pancreatectomy for Localized Pancreatic Neoplasms.

BACKGROUND: Minimally invasive distal pancreatectomy (MIDP) for localized neoplasms has been demonstrated to be feasible and safe. However, national adoption of the technique is poorly understood. Objectives of this study were to identify factors associated with use of minimally invasive distal pancreatectomy for localized neoplasms and assess hospital variation in MIDP utilization. METHODS: Retrospective cohort study of patients with pancreatic cysts, stage I pancreatic ductal adenocarcinoma, and stage I pancreatic neuroendocrine tumors undergoing distal pancreatectomy from the ACS NSQIP Pancreas Targeted Dataset. Factors associated with use of MIDP were identified using multivariable logistic regression and hospital-level variation was assessed. RESULTS: Analysis included 3,059 patients at 139 hospitals. Overall, 64.5% of patients underwent minimally invasive distal pancreatectomy. Patients were more likely to undergo MIDP if they had lower ASA classification (P = 0.004) or BMI ≥ 30 (P < 0.001) and less likely if they had pancreatic adenocarcinoma (P < 0.001). There was notable hospital variability in utilization (range 0 to 100% of cases). Hospital-level utilization of minimally invasive distal pancreatectomy did not appear to be driven by patient selection, as hierarchical analysis demonstrated that only 1.8% of observed hospital variation was attributable to measured patient selection factors. CONCLUSION: Utilization of MIDP for localized pancreatic neoplasms is highly variable. While some patient-level factors are associated with MIDP use, hospital adoption of MIDP appears to be the primary driver of utilization. Monitoring hospital-level use of MIDP may be a useful quality measure to monitor uptake of emerging techniques in pancreatic surgery.