The association of reduced ejection fraction with the outcomes of endovascular abdominal aortic aneurysm repair.

Objective: It is estimated that 20% of patients undergoing elective abdominal aortic aneurysm repair suffer from cardiomyopathy. This study examines the impact of reduced ejection fraction (EF) on the outcomes of endovascular aneurysm repair (EVAR) and compares the different types of cardiomyopathies causing reduction of EF. Our hypothesis is that reduction in EF is associated with higher mortality after EVAR.

Patient-specific, multiscale modelling of neointimal hyperplasia in lower-limb vein grafts using readily available clinical data.

The prediction of neointimal hyperplasia (NIH) growth, leading to vein graft failure in lower-limb peripheral arterial disease (PAD), is hindered by the multifactorial and multiscale mechanobiological mechanisms underlying the vascular remodelling process. Multiscale in silico models, linking patients' hemodynamics to NIH pathobiological mechanisms, can serve as a clinical support tool to monitor disease progression. Here, we propose a new computational pipeline for simulating NIH growth, carefully balancing model complexity/inclusion of mechanisms and readily available clinical data, and we use it to predict NIH growth for an entire vein graft.

Modelling lower-limb peripheral arterial disease using clinically available datasets: impact of inflow boundary conditions on hemodynamic indices for restenosis prediction.

Background And Objectives: The integration of hemodynamic markers as risk factors in restenosis prediction models for lower-limb peripheral arteries is hindered by fragmented clinical datasets. Computed tomography (CT) scans enable vessel geometry reconstruction and can be obtained at different times than the Doppler ultrasound (DUS) images, which provide information on blood flow velocity. Computational fluid dynamics (CFD) simulations allow the computation of near-wall hemodynamic indices, whose accuracy depends on the prescribed inlet boundary condition (BC), derived from the DUS images.

Comparative Outcomes of Peripheral Vascular Interventions in Patients on Chronic Anticoagulation with Factor Xa Inhibitors and Vitamin K Antagonists.

Background: In patients undergoing revascularization for peripheral arterial disease (PAD), low-dose Factor Xa inhibitors (FXaI) taken with aspirin improved limb and cardiovascular outcomes compared to aspirin alone. Furthermore, in atrial fibrillation and venous thromboembolism, FXaI are recommended over vitamin K antagonists (VKA) for chronic anticoagulation. While studies have evaluated different perioperative anticoagulation regimens in patients treated for PAD, the optimal regimen for chronic anticoagulation in patients with PAD undergoing peripheral vascular intervention (PVI) has not been determined.

The Utilization of Protamine during Peripheral Vascular Interventions in the VQI.

Background: Protamine administration was shown to reduce bleeding after carotid surgery but the role of protamine during peripheral vascular interventions (PVIs) remains unknown. This study evaluates the trend and outcomes of protamine use in the Vascular Quality Initiative (VQI). Our hypothesis is that the use of protamine is associated with decreased bleeding after PVI.

Anatomic patterns in claudicants who fail supervised exercise therapy.

Objective: Patients with intermittent claudication (IC) from peripheral arterial disease (PAD) have significant improvement with supervised exercise therapy (SET). However, many patients have progressive disease that will ultimately require revascularization. We sought to determine whether the anatomic patterns of PAD were associated with response to SET.

Balloon rupture with eversion during innominate vein angioplasty requiring surgical retrieval.

Balloon rupture during angioplasty can with calcified or recalcitrant lesions. A 61-year-old woman presented with worsening arm and facial swelling. She had a history of left upper extremity thrombolysis and stenting of the innominate vein 6 years prior.

How much flow is enough: the use of fractional flow reserve in chronic limb-threatening ischemia in a series of patients with isolated occlusive tibial disease.

The role of the fractional flow reserve to guide lower extremity peripheral vascular intervention, specifically in chronic limb-threatening ischemia, has remained unclear. This series presents a novel use of the fractional flow reserve in four patients to guide lower extremity endovascular interventions in patients with chronic limb-threatening ischemia.

Virtual vascular surgery interest group during the coronavirus disease 2019 pandemic.

Objectives: Early exposure to vascular surgery at the medical student level positively influences one's decision to apply into an integrated vascular surgery residency program. Vascular surgery interest groups (VSIGs) are student-run and aim to facilitate such exposure, traditionally via in-person events. Social distancing during the coronavirus disease 2019 pandemic disrupted these interactions.

Residents' method for gaining operative autonomy.

Introduction: The goal of this study was to explore the resident construct for their perceived successful method of actions that lead to OR autonomy during residency and the strategies they employed.

Methods: We conducted focus group interviews with residents from the General Surgery (GS) and Obstetrics & Gynecology (OBGYN) departments at a single academic institution across all clinical postgraduate years (PGY) using convenience sampling. Audio recordings of each interview were transcribed, analyzed and emergent themes were identified using a framework method.

The Construction of Case-Specific Resident Learning Goals.

Objective: Developing resident autonomy in the operating room is a complex process and resident established case specific learning goals may increase resident operating room training efficiency. However, little is understood about residents' experience identifying learning goals for a given case. The aim of this study was to explore the essential components contributing to surgery residents' identification of specific learning goals for surgical cases.

Neutrophil Lymphocyte Ratio and Transarterial Chemoembolization in Neuroendocrine Tumor Metastases.

Background: The neutrophil-to-lymphocyte ratio (NLR) has been shown to be predictive of outcomes in various cancers, including neuroendocrine tumors (NETs), and cancer-related treatments, including transarterial chemoembolization (TACE). We hypothesized that NLR could be predictive of response to TACE in patients with metastatic NET.

Methods: We reviewed 262 patients who underwent TACE for metastatic NET at a single tertiary medical center from 2000 to 2016.

Prognostic Impact of Serum Pancreastatin Following Chemoembolization for Neuroendocrine Tumors.

Purpose: The objective of this study was to investigate the prognostic impact of the biomarker serum pancreastatin in patients with metastatic neuroendocrine tumors (NETs) treated with transarterial chemoembolization (TACE).

Methods: Patients with metastatic NET treated with TACE at a single institution from 2000 to 2013 were analyzed. Patient demographics, response to therapy, and long-term survival were compared with baseline pancreastatin level and changes in pancreastatin levels after TACE.

A Case of Acute Iliocaval Thrombosis in the Setting of a Suprarenal Inferior Vena Cava Saccular Aneurysm.

Inferior vena cava (IVC) aneurysms are a rare finding, whose management and outcomes remain uncertain due to their low incidence and long-term follow-up. As IVC aneurysms remain a poorly understood clinical entity, it is important to expand upon our existing knowledge base as new cases arise. We present a patient with a suprarenal IVC saccular aneurysm and an overview of the current literature regarding IVC aneurysm classification, presentation, and management.

Redefining the Surgical Council of Resident Education (SCORE) Curriculum: A Comparison with the Operative Experiences of Graduated General Surgical Residents.

Our objective was to investigate the number and classify surgical operations performed by general surgery residents and compare these with the updated Surgical Council on Resident Education (SCORE) curriculum. We performed a retrospective review of logged surgical cases from general surgical residents who completed training at a single center from 2011 to 2015. The logged cases were correlated with the operations extracted from the SCORE curriculum.

Common carotid artery end-diastolic velocity and acceleration time can predict degree of internal carotid artery stenosis.

Objective: Whereas duplex ultrasound parameters for predicting internal carotid artery (ICA) stenosis are well defined, the use of common carotid artery (CCA) Doppler characteristics to predict ICA stenosis when the ICA cannot be insonated directly or accurately because of anatomy, calcification, or tortuosity has not been studied. The objective of this study was to identify CCA Doppler parameters that may predict ICA stenosis.

Methods: We reviewed all patients at our institution who underwent carotid duplex ultrasound (CDU) from 2008 to 2015 and also had a comparison computed tomography, magnetic resonance, or catheter angiogram.

The Role of Endovascular In Situ Revascularization in the Treatment of Arterial and Graft Infections.

Mycotic aneurysms and prosthetic graft infections are traditionally treated with excision of the infected tissue or graft, often requiring anatomical or extraanatomical bypass, carrying significant morbidity and mortality. Currently, the role of endovascular repair without excision in this setting has yet to be defined. We present 2 case scenarios, whereby mycotic pseudoaneurysms were successfully treated with endovascular stent-graft coverage and to present an in-depth review of endovascular in situ revascularization in the treatment of arterial and graft infections.

Incidence of abdominal wall metastases following percutaneous endoscopic gastrostomy placement in patients with head and neck cancer.

Introduction: Percutaneous endoscopic gastrostomy (PEG) tubes are an effective modality for enteral nutrition in patients with head and neck cancer; however, there have been documented case reports of "seeding" of the abdominal wall by the theoretic risk of dragging the tube along the tumor during PEG placement. The objective of this study is to determine the incidence and contributing risk factors leading to metastasis to the abdominal wall following PEG placement in patients with head and neck cancer.

Methods: A retrospective chart review was performed on patients diagnosed with head and neck malignancy who underwent PEG placement between 1/5/2009 and 12/22/2014.

Mortality and readmission of outcomes after discharge from the surgical intensive care unit to long-term, acute-care hospitals.

Background: Patients with prolonged hospitalizations in the surgical intensive care unit often have ongoing medical needs that require further care at long-term, acute-care hospitals upon discharge. Setting expectations for patients and families after protracted operative intensive care unit hospitalization is challenging, and there are limited data to guide these conversations. The purpose of this study was to determine patient survival and readmission rates after discharge from the surgical intensive care unit directly to a long-term, acute-care hospital.

Discharge destination and readmission rates in older trauma patients.

Background: In older trauma patients, the impact of discharge destination on readmission rates is not known. The objective of this study was to evaluate the association between the discharge destination and the 30-day readmission rate in older trauma patients.

Materials And Methods: A previously validated database of all patients aged 45 years or older undergoing trauma evaluation at our level 1 trauma center between January 1, 2008 and December 31, 2008 was analyzed to retrospectively compare the incidences of 30-day readmission between patients discharged to home, to inpatient rehabilitation facilities, and to other extended care facilities (ECFs).

Agency for Healthcare Research and Quality (AHRQ) Patient Safety Indicator for Postoperative Respiratory Failure (PSI 11) does not identify accurately patients who received unsafe care.

Background: The Agency for Healthcare Research and Quality Patient Safety Indicator 11 is used to identify postoperative respiratory failure events and detect areas for quality improvement. This study examines the accuracy of Patient Safety Indicator 11 in identifying clinically valid patient safety events.

Methods: All cases flagged for Patient Safety Indicator 11 from July 2013 to July 2015 by Agency for Healthcare Research and Quality QI Version 4.

An Analysis of Operative Experiences of Junior General Surgical Residents and Correlation With the SCORE Curriculum.

Objective: Junior surgical resident education at academic institutions is traditionally focused to preoperative and postoperative patient management. Our objective was to investigate the number and type of surgical procedures performed by junior general surgery residents in comparison with the American Board of Surgery requirements and the Surgical Council on Resident Education (SCORE) curriculum.

Design: This was a retrospective study using the Accreditation Counsel for Graduate Medical Education (ACGME) operative case logs of junior surgical residents.