Publications by authors named "Klune J"

Background: Symptomatic cholelithiasis is a common surgical problem, with many patients requiring multiple gallstone-related emergency department (ED) visits before cholecystectomy. The Social Vulnerability Index (SVI) identifies vulnerable patient populations. This study aimed to assess the association between social vulnerability and outpatient management of symptomatic cholelithiasis.

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Background: Liver failure patients are at increased risk of surgical complications. The decision to perform a colonic anastomosis vs a colostomy in urgent colorectal surgery remains unclear.

Methods: The ACS-NSQIP database was queried for patients undergoing nonelective colorectal surgery between 2016 and 2018.

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Background: Bundled Payment (BP) models are becoming more common in surgery. We share our early experiences with Bundled Payments for Care Improvement for major bowel surgery.

Methods: Patients undergoing major bowel surgery between January and October 2021 were identified using Medicare Severity-Diagnosis Related Group (MS-DRG) codes.

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Background: This study aimed to determine the clinical impact of wound management technique on surgical site infection (SSI), hospital length of stay (LOS), and mortality in emergent colorectal surgery.

Methods: A prospective observational study (2021-2023) of urgent or emergent colorectal surgery patients at 15 institutions was conducted. Pediatric patients and traumatic colorectal injuries were excluded.

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Background: Medicare expenditures have steadily increased over the decades, and yet Medicare Physician Fee Schedule payments for individual services have declined. We examine trends in Medicare Physician Fee Schedule payments for office visits, inpatient visits, and surgical procedures.

Methods: The Medicare Physician Fee Schedule Look-Up Tool was queried for payment data for office visits, inpatient visits, and surgical procedures between 2013 and 2023.

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Frailty is characterized by reduced physiologic reserve, and for patients with colon cancer, frailty is associated with increased morbidity after resection. One commonly cited reason for performing an end colostomy vs a primary anastomosis in left-sided colon cancer is the belief that frail patients do not have the physiologic reserve to withstand the morbidity associated with an anastomotic leak. We explored the impact of frailty on the type of operation performed in patients with left-sided colon cancer.

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Introduction: Interfacility transfer to a referral center is often considered for patients with liver disease undergoing nonelective cholecystectomy given management complexities and perioperative risk. We sought to determine the association between the Model for End Stage Liver Disease (MELD) score, transfer frequency, and outcomes in those patients using a national database.

Materials And Methods: The ACS-NSQIP participant use files were queried for nonelective open or laparoscopic cholecystectomy from 2016 to 2018.

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Enhanced Recovery after Surgery for mastectomy has resulted in increased use of outpatient same-day mastectomy (SDM). Whether SDM leads to increased readmissions or reoperations is not well documented. This study examines national data to compare outcomes of SDM to an overnight stay.

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Introduction: Optimal wound management strategies to reduce surgical site infections (SSIs) in nonelective open colorectal surgery (NOCS) remain controversial and variable. Our aim is to describe SSI and other 30-day outcome measures among patients with varying wound management techniques undergoing NOCS.

Methods: All NOCS patients were extracted from the 2016 to 2018 ACS-NSQIP database.

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Every year, approximately 3% of cats and dogs are lost. In addition to passive methods for identifying pets, radiofrequency tracking devices (TDs) are available. These TDs can track a pet's geographic position, which is transmitted by radio frequencies.

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Background: Perforated peptic ulcer is a morbid emergency general surgery condition. Best practices for postoperative care remain undefined. Surgical dogma preaches practices such as peritoneal drain placement, prolonged nil per os, and routine postoperative enteral contrast imaging despite a lack of evidence.

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Background: Perforated peptic ulcer (PPU) is a surgical emergency needing swift operative resolution. While laparoscopic and open approaches are viable options, it remains unclear whether laparoscopic repair has significantly improved outcomes. We use a national surgical database to compare perioperative and 30-d postoperative (30POP) outcomes.

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Background: Emergency open large bowel procedures have higher rates of intraoperative contamination and increased risk of surgical site infection (SSI) than elective colon surgeries. Several wound management strategies have been proposed, such as vacuum-assisted closure (VAC) therapy and delayed primary closure to improve results. The purpose of this study is to evaluate the relationship between wound management technique and SSI and other quality measures.

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Background: The use of indocyanine green during laparoscopic cholecystectomy has been postulated to help to define anatomy. Studies have not specifically evaluated patients with acute cholecystitis. We sought to assess whether use of indocyanine green can decrease the rate of bail-out operation (subtotal cholecystectomy or conversion to an open operation) in an acute care surgery population where acute cholecystitis is more frequent.

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Objective: The general surgery workforce deficit is projected to grow to 15% to 21% by 2050. An estimated 6.6% increase to existing general surgery residency (GSR) programs is needed to meet this shortfall.

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Background: The Centers for Medicare & Medicaid Services (CMS) recently announced a new voluntary episode payment model for major bowel surgery. The purpose of this study was to examine the financial impact of bundled payments for major bowel surgery.

Methods: An institutional database was retrospectively queried for all patients who underwent major bowel surgery between July 2016 and June 2018.

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Background: Bundled payments are increasingly becoming common in surgery, yet little is known regarding their potential impact on reimbursements for patients presenting with acute appendicitis. This study examines the financial impact of bundled payments for acute appendicitis.

Methods: This was a retrospective review of all open or laparoscopic appendectomies between July 2014 and June 2017.

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Interleukin-23 (IL-23) is a proinflammatory cytokine initially studied in autoimmune disease that has been more recently linked to innate immunity. We observed that the expression of IL-23 is upregulated during hypoxia in a hepatocyte and nonparenchymal cell (NPC) coculture system, as well as during ischemia-reperfusion (I/R) injury in the liver. Interferon regulatory factor-1 (IRF-1) is a transcription factor that induces expression of multiple inflammatory cytokines and has been shown to play a critical role in liver I/R injury.

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Red blood cell transfusions in the setting of trauma are a double-edged sword, as it is a necessary component for life-sustaining treatment in massive hemorrhagic shock, but also associated with increased risk for nosocomial infections and immune suppression. The mechanisms surrounding this immune suppression are unclear. Using supernatant from human packed red blood cell (RBC), we demonstrate that clearance of Escherichia coli by macrophages is inhibited both in vitro and in vivo using a murine model of trauma and hemorrhagic shock.

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Unlabelled: High-mobility group box 1 (HMGB1) is an abundant chromatin-associated nuclear protein and released into the extracellular milieu during liver ischemia-reperfusion (I/R), signaling activation of proinflammatory cascades. Because the intracellular function of HMGB1 during sterile inflammation of I/R is currently unknown, we sought to determine the role of intracellular HMGB1 in hepatocytes after liver I/R. When hepatocyte-specific HMGB1 knockout (HMGB1-HC-KO) and control mice were subjected to a nonlethal warm liver I/R, it was found that HMGB1-HC-KO mice had significantly greater hepatocellular injury after I/R, compared to control mice.

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Unlabelled: Ischemia-reperfusion (I/R) injury is a process whereby an initial hypoxic insult and subsequent return of blood flow leads to the propagation of innate immune responses and organ injury. The necessity of the pattern recognition receptor, Toll-like receptor (TLR)4, for this innate immune response has been previously shown. However, TLR4 is present on various cell types of the liver, both immune and nonimmune cells.

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Interferon regulatory factor (IRF)-1 is a nuclear transcription factor that induces inflammatory cytokine mediators and contributes to hepatic ischemia-reperfusion (I/R) injury. No strategies to mitigate IRF1-mediated liver damage exist. IRF2 is a structurally similar endogenous protein that competes with IRF1 for DNA binding sites in IRF-responsive target genes and acts as a competitive inhibitor.

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