Associations of Computerized Tomography-Based Body Composition and Food Insecurity in Bariatric Surgery Patients.

Introduction: Food insecurity (FI) is associated with increased adiposity and obesity-related medical conditions, and body composition can affect metabolic risk. Bariatric surgery effectively treats obesity and metabolic diseases. The association of FI with baseline computerized tomography (CT)-based body composition and bariatric surgery outcomes was investigated in this exploratory study.

A Novel Thyroid Ultrasound Proficiency Metric Designed Through a Multidisciplinary Delphi Approach.

Background: Thyroid ultrasounds extend surgeons' outpatient capabilities and are essential for operative planning. However, most residents are not formally trained in thyroid ultrasound. The purpose of this study was to create a novel thyroid ultrasound proficiency metric through a collaborative Delphi approach.

Socioeconomic risk-adjustment with the Area Deprivation Index predicts surgical morbidity and cost.

Background: There is a strong association between socioeconomic status and surgical outcomes; however, the optimal method for socioeconomic risk-stratification remains elusive. We aimed to compare 2 metrics of socioeconomic ranking by ZIP code, the Distressed Communities Index, and the Area Deprivation Index and their association with surgical outcomes.

Methods: This retrospective study included all general surgery cases performed at a single institution from 2005 to 2015.

Drp1 Promotes KRas-Driven Metabolic Changes to Drive Pancreatic Tumor Growth.

Mitochondria undergo fission and fusion to maintain homeostasis, and tumors exhibit the dysregulation of mitochondrial dynamics. We recently demonstrated that ectopic HRas promotes mitochondrial fragmentation and tumor growth through Erk phosphorylation of the mitochondrial fission GTPase Dynamin-related protein 1 (Drp1). However, the role of Drp1 in the setting of endogenous oncogenic KRas remains unknown.

Bariatric surgery reduces long-term rates of cardiac events and need for coronary revascularization: a propensity-matched analysis.

Background: Obesity and obesity-related comorbidities are associated with increased risk of coronary artery disease (CAD). Bariatric surgery results in durable weight loss and improvement in numerous CAD risk factors, yet limited data exist on CAD-related outcomes. We hypothesized that bariatric surgery would lead to decreased risk of CAD and reduced rates of coronary revascularization procedures.

CRISPR knockout screening identifies combinatorial drug targets in pancreatic cancer and models cellular drug response.

Predicting the response and identifying additional targets that will improve the efficacy of chemotherapy is a major goal in cancer research. Through large-scale in vivo and in vitro CRISPR knockout screens in pancreatic ductal adenocarcinoma cells, we identified genes whose genetic deletion or pharmacologic inhibition synergistically increase the cytotoxicity of MEK signaling inhibitors. Furthermore, we show that CRISPR viability scores combined with basal gene expression levels could model global cellular responses to the drug treatment.

Ten-year outcomes of Roux-en-Y gastric bypass are equivalent in patients with Medicare disability and non-Medicare patients.

Background: Bariatric surgery is the most effective intervention for achieving durable weight loss and improvement of comorbidities in patients with obesity. Limited data exist on the impact of Medicare status in patients undergoing Roux-en-Y gastric bypass. We hypothesized that there is no difference in outcomes between Medicare beneficiaries and non-Medicare patients at the 10-year follow-up.

Neoadjuvant Chemotherapy Is Associated with Lower Lymph Node Counts in Colon Cancer.

Adequate lymphadenectomy is associated with improved survival in patients who undergo oncologic resection of colorectal cancer and has been identified as a quality metric. Neoadjuvant chemotherapy has been found to be associated with collection of <12 lymph nodes in patients with rectal cancer. The purpose of this study was to evaluate patient and operative risk factors for inadequate lymph node retrieval during oncologic colectomy.

Race is associated with completion of neoadjuvant chemotherapy for breast cancer.

Background: Completion of prescribed neoadjuvant chemotherapy for breast cancer is paramount to patients obtaining full benefit from the treatment; however, factors affecting neoadjuvant chemotherapy completion are not known. We hypothesized that race is a predictor of completion of neoadjuvant chemotherapy in patients with breast cancer.

Methods: All patients with breast cancer treated with neoadjuvant chemotherapy 2009-2016 at a single institution were stratified by completion of neoadjuvant chemotherapy and by race.

Ureteral stents increase risk of postoperative acute kidney injury following colorectal surgery.

Background: Ureteral stents are commonly placed before colorectal resection to assist in identification of ureters and prevent injury. Acute kidney injury (AKI) is a common cause of morbidity and increased cost following colorectal surgery. Although previously associated with reflex anuria, prophylactic stents have not been found to increase AKI.

CD47 Blockade as an Adjuvant Immunotherapy for Resectable Pancreatic Cancer.

Patients with pancreatic ductal adenocarcinoma (PDAC) who undergo surgical resection and adjuvant chemotherapy have an expected survival of only 2 years due to disease recurrence, frequently in the liver. We investigated the role of liver macrophages in progression of PDAC micrometastases to identify adjuvant treatment strategies that could prolong survival. A murine splenic injection model of hepatic micrometastatic PDAC was used with five patient-derived PDAC tumors.

Adoption of robotics in a general surgery residency program: at what cost?

Background: Robotic technology is increasingly being utilized by general surgeons. However, the impact of introducing robotics to surgical residency has not been examined. This study aims to assess the financial costs and training impact of introducing robotics at an academic general surgery residency program.

Unplanned Reoperation Following Colorectal Surgery: Indications and Operations.

Aim: Prior studies have demonstrated a reoperation rate ranging from 5.8 to 7.6% following colorectal surgery.

Hypoglycemia Following Bariatric Surgery: Our 31-Year Experience.

Purpose: The purposes of this study are to identify the cumulative incidence of post-bariatric surgery hypoglycemia (PBSH), describe its symptomatology, and characterize treatment patterns at a large academic institution.

Materials And Methods: All patients who underwent bariatric surgery at a single institution from 1985 to 2015 were identified using a clinical database, administrative billing data identified patients who were treated for hypoglycemia, and chart reviews were performed to make a diagnosis of PBSH based on Whipple's triad. PBSH cases were reviewed including patient diabetes history, symptomatology, and treatment measures.

Risk Associated With Complications and Mortality After Urgent Surgery vs Elective and Emergency Surgery: Implications for Defining "Quality" and Reporting Outcomes for Urgent Surgery.

Importance: Given the current climate of outcomes-driven quality reporting, it is critical to appropriately risk stratify patients using standardized metrics.

Objective: To elucidate the risk associated with urgent surgery on complications and mortality after general surgical procedures.

Design, Setting, And Participants: This retrospective review used the American College of Surgeons National Surgery Quality Improvement Program database to capture all general surgery cases performed at 435 hospitals nationwide between January 1, 2013, and December 31, 2013.

Patient travel for bariatric surgery: does distance matter?

Background: Increasingly, patients are faced with greater travel distances to undergo bariatric surgery at high-volume centers.

Objectives: This study sought to evaluate the impact of travel distance on access to care and outcomes after bariatric surgery.

Setting: Patients who underwent Roux-en-Y gastric bypass at an academic bariatric surgery center from 1985 to 2004 were examined and stratified by patient travel distance.

The role of liver-directed surgery in patients with hepatic metastasis from primary breast cancer: a multi-institutional analysis.

Background: Data on surgical management of breast liver metastasis are limited. We sought to determine the safety and long-term outcome of patients undergoing hepatic resection of breast cancer liver metastases (BCLM).

Methods: Using a multi-institutional, international database, 131 patients who underwent surgery for BCLM between 1980 and 2014 were identified.

Declining Operative Experience for Junior-Level Residents: Is This an Unintended Consequence of Minimally Invasive Surgery?

Introduction: Our group has previously demonstrated an upward shift from junior to senior resident participation in common general surgery operations, traditionally performed by junior-level residents. The objective of this study was to evaluate if this trend would correct over time. We hypothesized that junior resident case volume would improve.

Ileal J-Pouch Volvulus Following Total Proctocolectomy for Ulcerative Colitis.

Total proctocolectomy with ileal pouch-anal anastomosis (IPAA) allows restoration of continence in select patients with ulcerative colitis but is associated with significant morbidity. Well-known complications following IPAA include pouchitis, anastomotic leak, and small bowel obstruction. Obstruction secondary to ileal pouch volvulus is exceedingly rare.

Risk Factors for Urinary Tract Infections in Cardiac Surgical Patients.

Background: Risk factors for catheter-associated urinary tract infections (CAUTIs) in patients undergoing non-cardiac surgical procedures have been well documented. However, the variables associated with CAUTIs in the cardiac surgical population have not been clearly defined. Therefore, the purpose of this study was to investigate risk factors associated with CAUTIs in patients undergoing cardiac procedures.