Association of Preoperative Glycosylated Hemoglobin Level with 30-Day Outcomes Following Laparoscopic Roux-en-Y Gastric Bypass: an Analysis of the ACS-MBSAQIP Database.

PURPOSE: Elevated glycosylated hemoglobin (HbA1c) levels have been associated with increased morbidity and mortality following several cardiac, colorectal, orthopedic, and vascular surgery operations. The purpose of this study was to determine if there is a HgA1c cut-point that can be used in patients undergoing laparoscopic Roux-en-Y gastric bypass to decrease the risk of 30-day wound events and additional 30-day morbidity and mortality. MATERIALS AND METHODS: All patients undergoing first-time, elective Roux-en-Y gastric bypass in 2017 and 2018 with a diagnosis of diabetes mellitus (DM) and a preoperative HbA1c level were identified within the American College of Surgeons Metabolic and Bariatric Surgery Accreditation Quality Improvement Program (ACS-MBSAQIP) database. The association of preoperative HbA1c levels with 30-day morbidity and mortality was investigated. RESULTS: A total of 13,806 patients met inclusion criteria. Two natural HbA1c inflection points for composite wound events, including superficial, deep, and organ space surgical site infections (SSI) and wound dehiscence, were found. A HbA1c level of ≤ 6.5% was associated with a decreased odds of experiencing the composite 30-day wound event outcome while a HbA1c level of > 8.6% was associated with an increased odds of experiencing the composite 30-day wound event outcome. The differences in the incidence of the 30-day composite wound event outcomes were driven primarily by superficial and organ space SSI, including anastomotic leaks. CONCLUSION: Patients with DM being evaluated for RYGB surgery with a HbA1c level > 8.6% are at an increased risk for 30-day wound events, including superficial and organ space SSI.

Factors Associated With General Surgery Residents' Operative Experience During the COVID-19 Pandemic.

Importance: The suspension of elective operations in March 2020 to prepare for the COVID-19 surge posed significant challenges to resident education. To mitigate the potential negative effects of COVID-19 on surgical education, it is important to quantify how the pandemic influenced resident operative volume. Objective: To examine the association of the pandemic with general surgical residents' operative experience by postgraduate year (PGY) and case type and to evaluate if certain institutional characteristics were associated with a greater decline in surgical volume. Design, Setting, and Participants: This retrospective review included residents' operative logs from 3 consecutive academic years (2017-2018, 2018-2019, and 2019-2020) from 16 general surgery programs. Data collected included total major cases, case type, and PGY. Faculty completed a survey about program demographics and COVID-19 response. Data on race were not collected. Operative volumes from March to June 2020 were compared with the same period during 2018 and 2019. Data were analyzed using Kruskal-Wallis test adjusted for within-program correlations. Main Outcome and Measures: Total major cases performed by each resident during the first 4 months of the pandemic. Results: A total of 1368 case logs were analyzed. There was a 33.5% reduction in total major cases performed in March to June 2020 compared with 2018 and 2019 (45.0 [95% CI, 36.1-53.9] vs 67.7 [95% CI, 62.0-72.2]; P < .001), which significantly affected every PGY. All case types were significantly reduced in 2020 except liver, pancreas, small intestine, and trauma cases. There was a 10.2% reduction in operative volume during the 2019-2020 academic year compared with the 2 previous years (192.3 [95% CI, 178.5-206.1] vs 213.8 [95% CI, 203.6-223.9]; P < .001). Level 1 trauma centers (49.5 vs 68.5; 27.7%) had a significantly lower reduction in case volume than non-level 1 trauma centers (33.9 vs 63.0; 46%) (P = .03). Conclusions and Relevance: In this study of operative logs of general surgery residents in 16 US programs from 2017 to 2020, the first 4 months of the COVID-19 pandemic was associated with a significant reduction in operative experience, which affected every PGY and most case types. Level 1 trauma centers were less affected than non-level 1 centers. If this trend continues, the effect on surgical training may be even more detrimental.

A multi-institutional study assessing general surgery faculty teaching evaluations.

BACKGROUND: Resident evaluation of faculty teaching is an important metric in general surgery training, however considerable variability in faculty teaching evaluation (FE) instruments exists. STUDY DESIGN: Twenty-two general surgery programs provided their FE and program demographics. Three clinical education experts performed blinded assessment of FEs, assessing adherence 2018 ACGME common program standards and if the FE was meaningful. RESULTS: Number of questions per FE ranged from 1 to 29. The expert assessments demonstrated that no evaluation addressed all 5 ACGME standards. There were significant differences in the FEs effectiveness of assessing the 5 ACGME standards (p < 0.001), with teaching abilities and professionalism rated the highest and scholarly activities the lowest. CONCLUSION: There was wide variation between programs regarding FEs development and adhered to ACGME standards. Faculty evaluation tools consistently built around all suggested ACGME standards may allow for a more accurate and useful assessment of faculty teaching abilities to target professional development.

Investigating Association Between Sex and Faculty Teaching Evaluation in General Surgery Residency Programs: A Multi-Institutional Study.

BACKGROUND: In specialties with gender imbalance, such as general surgery, women faculty frequently receive lower teaching evaluation scores compared with men, which can affect academic advancement. STUDY DESIGN: We collected 1 year of anonymous resident-derived faculty teaching evaluations from 21 general surgery programs, along with resident, faculty, and department leadership gender complement. A composite evaluation score was calculated for each faculty. After accounting for within-program correlations, we compared male and female scores using the cluster-adjusted t-test to describe the respective mean differences with a 95% CI. Programs were divided into quartiles based on percent female faculty, female residents, and combined total females to detect associations between female representation and faculty teaching evaluation scores. RESULTS: The 21 programs yielded 20,187 teaching evaluations of 1,177 faculty. Women comprised 28% of the faculty, 47% of residents, 43% of program directors, and 19% of department chairs. Overall, women faculty had significantly higher evaluation scores than men (90.6% vs 89.5%, p < 0.05). Female gender was associated with higher teaching evaluation scores compared with male faculty in the lowest quartiles for all combinations of women representation. CONCLUSIONS: This multi-institutional analysis of general surgical resident evaluations of faculty identified that female gender was associated with higher evaluation scores than men (although the difference was small). This unanticipated finding might reflect the slowly changing gender balance within general surgery and attitudes towards female faculty in a traditionally male-dominated field. Contrary to our hypothesis, female gender was associated with higher faculty evaluation scores at programs with fewer women faculty and fewer women residents.

Updates on Monogenic Obesity in a Multifactorial Disease.

Obesity is a worldwide epidemic with rates nearly doubling over the last 30 years. Despite increasing prevalence, the multifactorial pathogenesis of obesity continues to be widely misunderstood. Investigating genetic drivers in the development of obesity is an important area of focus, as genetics move to the forefront of medicine and personalized treatment evolves. Thus, this narrative review focused on four genes which have genome-wide association study-documented links to obesity and obesity syndromes. We explored their involvement in the predisposition, progression, and prognosis of obesity. Leptin, leptin receptor, pro-opiomelanocortin, and melanocortin 4 receptor are our four genes of interest, and herein we elaborated on the current literature, pathogenesis, and available treatments for patients with these specific genetic mutations.

Pneumoperitoneum.

Pneumoperitoneum has a wide differential diagnosis and presents with varying degrees of severity; however, not all etiologies require operative intervention. It is imperative that all patients with this diagnosis are evaluated by a surgeon. A thorough history, physical examination, and workup, aimed at localization of the source of pneumoperitoneum will ultimately determine the necessary treatments, including the need for operative intervention. We aim to provide the reader with a working knowledge regarding the evaluation and treatment of patients with pneumoperitoneum.

Growth in robotic-assisted procedures is from conversion of laparoscopic procedures and not from open surgeons' conversion: a study of trends and costs.

BACKGROUND: Utilization of laparoscopy (LAP) has been increasing in general surgery for years, and there is currently a rapid increase in the utilization of robotic-assisted surgeries (RAS). This study evaluates trends in the surgical approach utilized in some commonly performed surgeries, the proportion of each approach within the procedures, and the cost of these surgeries based on the surgical approach. METHODS: This is a retrospective study using the Vizient database. The database was queried using ICD-9 codes for colectomy, cholecystectomy, inguinal and ventral hernia repairs, and bariatric surgeries, either open, LAP, or robotically performed. Utilization trends were evaluated between quarters, over a 7-year period, and direct cost was compared between approaches. IBM SPSS v.23.0.0 was used for data analysis, with α = 0.05. RESULTS: 857,468 patients underwent colectomy, cholecystectomy, inguinal and ventral hernia repairs, and bariatric procedures. A significant decrease in open-approach utilization was seen in colectomy (71.8-61.9%), cholecystectomy (35.7-27.1%), and bariatric surgeries (20.1-10.1%), whereas both LAP and RAS utilization increased (p < 0.001). Significant RAS increase was seen in all five procedures: colectomy (0.4-8.0%), cholecystectomy (0.2-1.8%), IHR (19.9-29.4%), VHR (0.2-2.9%), and bariatric (0.6-5.4%), compared to a decrease in LAP (p < 0.001). Surgery cost was significantly higher for open ($14,364), followed by RAS ($11,376) and LAP ($7945), p < 0.001. CONCLUSIONS: Robotic technology is commonly viewed as enabling open procedures to be converted to minimally invasive, a trend not observed in our study. Our trends analysis revealed significant RAS utilization increase from LAP procedures and not from open procedure conversion, although specific surgeon data were not available. RAS were costlier than LAP for all five procedures. The benefits of rapid robot adoption and the forces that are driving these must be examined against a backdrop of burdening an already expensive healthcare system.

Conditional deletion of Pten causes bronchiolar hyperplasia.

Tumor suppressor phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is a lipid phosphatase that regulates multiple cellular processes including cell polarity, migration, proliferation, and carcinogenesis. In this work, we demonstrate that conditional deletion of Pten (Pten(Delta/Delta)) in the respiratory epithelial cells of the developing mouse lung caused epithelial cell proliferation and hyperplasia as early as 4 to 6 weeks of age. While bronchiolar cell differentiation was normal, as indicated by beta-tubulin and FOXJ1 expression in ciliated cells and by CCSP expression in nonciliated cells, cell proliferation (detected by expression of Ki-67, phospho-histone-H3, and cyclin D1) was increased and associated with activation of the AKT/mTOR survival pathway. Deletion of Pten caused papillary epithelial hyperplasia characterized by a hypercellular epithelium lining papillae with fibrovascular cores that protruded into the airway lumens. Cell polarity, as assessed by subcellular localization of cadherin, beta-catenin, and zonula occludens-1, was unaltered. PTEN is required for regulation of epithelial cell proliferation in the lung and for the maintenance of the normal simple columnar epithelium characteristics of bronchi and bronchioles.