The Risk of Pretransplant Blood Transfusion for Primary Graft Dysfunction After Lung Transplant.

Background: Primary graft dysfunction (PGD) is the leading cause of short- and long-term mortality associated with lung transplantation. The impact of pretransplantation blood transfusions for recipients is not fully elucidated.

Methods: This is a retrospective review of 206 consecutive lung transplantations performed at a single academic center (Northwestern University Feinberg School of Medicine, Chicago, IL) from January 2018 to July 2022.

Inducible CCR2+ nonclassical monocytes mediate the regression of cancer metastasis.

A major limitation of immunotherapy is the development of resistance resulting from cancer-mediated inhibition of host lymphocytes. Cancer cells release CCL2 to recruit classical monocytes expressing its receptor CCR2 for the promotion of metastasis and resistance to immunosurveillance. In the circulation, some CCR2-expressing classical monocytes lose CCR2 and differentiate into intravascular nonclassical monocytes that have anticancer properties but are unable to access extravascular tumor sites.

Risk factors and impact of swallowing impairment and aspiration after lung transplantation.

Background: Oropharyngeal swallowing impairment frequently occurs following lung transplantation, placing patients at risk of aspiration-related complications and mortality. The primary objectives of this study were to characterize swallowing impairment and explore potential risk factors for aspiration after lung transplantation.

Methods: A retrospective review of lung transplant recipients treated between January 2018 and December 2022 that received an instrumental swallow study was conducted.

Contrasting predictors of severe primary graft dysfunction following transplant for chronic and acute respiratory failure.

Background: Lung transplantation represents a pivotal intervention for individuals grappling with end-stage lung diseases, and the role of lung transplantation in acute respiratory distress syndrome (ARDS) patients has garnered increased attention especially after the coronavirus disease 2019 (COVID-19) pandemic. Multiple studies have demonstrated a high incidence of primary graft dysfunction (PGD) in patients with ARDS compared to contemporaneous controls undergoing transplantation for chronic end-stage lung diseases although underlying mechanisms or risk factors remain unknown. This retrospective study investigates the contrasting risk factors for PGD grade 3 in patients with ARDS and chronic respiratory failure undergoing lung transplantation.

Impact of bridging veno-venous extracorporeal membrane oxygenation to COVID-19 lung transplantation.

Background: Veno-venous extracorporeal membrane oxygenation (VV-ECMO) therapy is being increasingly used as respiratory support for patients with severe coronavirus disease 2019 (COVID-19)-associated acute respiratory distress syndrome (ARDS). However, the long-term outcome of VV-ECMO as a bridge to lung transplantation in COVID-19-associated ARDS remains unclear, hence the purpose of this study aimed to evaluate its long-term outcome, safety, and feasibility.

Methods: This was a retrospective cohort study from an institutional lung transplantation database between June 2020 and June 2022.

Predictors of Cytomegalovirus Recurrence Following Cessation of Posttransplant Prophylaxis.

Introduction: Cytomegalovirus (CMV) infection is associated with a poor prognosis after lung transplantation, and donor and recipient CMV serostatus is a risk factor for reactivation. CMV prophylaxis is commonly administered in the first year following transplantation to reduce CMV infection; however, the risk factors for long-term reactivation remain unclear. We investigated the timing and risk factors of CMV infection after prophylactic administration.

Residents Need a Dynamic Approach to Leadership Education: A Qualitative Study.

Objective: Leadership is an essential skill for surgeons, but it is not systematically taught in residency. The objective of this study was to explore the current experiences, motivators, and perspectives on leadership training of general surgery residents.

Design/setting/participants: Semi-structured focus groups were conducted with 20 general surgery residents at an academic training program.

Temporal correlation between postreperfusion complement deposition and severe primary graft dysfunction in lung allografts.

Growing evidence implicates complement in the pathogenesis of primary graft dysfunction (PGD). We hypothesized that early complement activation postreperfusion could predispose to severe PGD grade 3 (PGD-3) at 72 hours, which is associated with worst posttransplant outcomes. Consecutive lung transplant patients (n = 253) from January 2018 through June 2023 underwent timed open allograft biopsies at the end of cold ischemia (internal control) and 30 minutes postreperfusion.

Wireless broadband acousto-mechanical sensing system for continuous physiological monitoring.

The human body generates various forms of subtle, broadband acousto-mechanical signals that contain information on cardiorespiratory and gastrointestinal health with potential application for continuous physiological monitoring. Existing device options, ranging from digital stethoscopes to inertial measurement units, offer useful capabilities but have disadvantages such as restricted measurement locations that prevent continuous, longitudinal tracking and that constrain their use to controlled environments. Here we present a wireless, broadband acousto-mechanical sensing network that circumvents these limitations and provides information on processes including slow movements within the body, digestive activity, respiratory sounds and cardiac cycles, all with clinical grade accuracy and independent of artifacts from ambient sounds.

The impact of procedural activities on musculoskeletal pain experienced by pregnant surgeons.

Background: Two-thirds of surgeons report work-related musculoskeletal disorders (WRMD). There is limited data on WRMD symptoms experienced by pregnant surgeons.

Methods: We distributed an electronic survey via personal contacts to attending and trainee surgeons across six academic institutions to assess the impact of procedural activities and surgical ergonomics (SE) on WRMD symptoms during pregnancy.

Single-Center Experience With Lung Transplant Evaluation Referrals of Acute Respiratory Distress Syndrome Patients During the COVID-19 Pandemic: How Do You Make Up For Lost Time?

Transfer of select, medically refractory acute respiratory distress syndrome patients to lung transplant centers requires extensive resources. Here, we report 270 consecutive lung transplant patient referrals to our center for medically refractory ARDS from June 2021 to April 2022, following the implementation of clinical care pathways for intake of these patients. Eighty-seven of 270 patients (32.

Primary graft dysfunction grade correlates with acute kidney injury stage after lung transplantation.

Background: Primary graft dysfunction (PGD) and acute kidney injury (AKI) are major early complications of lung transplantation and are associated with increased mortality. Lung injury after PGD can contribute to renal dysfunction; however, the association between PGD and AKI severity has not been thoroughly investigated. We analyzed the association between PGD grading and AKI staging, and the impact of AKI on subsequent changes to chronic kidney disease (CKD), including glomerular filtration rate (GFR), over time.

Lung Transplantation in Coronavirus-19 Patients: What We Have Learned So Far.

Coronavirus-19 (COVID-19) can result in irrecoverable acute respiratory distress syndrome (ARDS) or life-limiting fibrosis for which lung transplantation is currently the only viable treatment. COVID-19 lung transplantation has transformed the field of lung transplantation, as before the pandemic, few transplants had been performed in the setting of infectious disease or ARDS. Given the complexities associated with COVID-19 lung transplantation, it requires strict patient selection with an experienced multidisciplinary team in a high-resource hospital setting.

Lung transplantation for coronavirus disease 2019 acute respiratory distress syndrome/fibrosis: silver lining of a global pandemic.

Purpose Of Review: The COVID-19 pandemic revolutionized the field of lung transplantation, as lung transplant is now an acceptable life-saving therapy for select patients with COVID-19-associated acute respiratory distress syndrome (ARDS), while prior to the pandemic, few transplants were performed for ARDS. This review article details the establishment of lung transplantation as a viable therapy for COVID-19-related respiratory failure, how to evaluate COVID-19 patients for lung transplant, and specific technical considerations for the operation.

Recent Findings: Lung transplantation is a life-altering treatment for two distinct cohorts of COVID-19 patients: those with irrecoverable COVID-19-associated ARDS and those who recover from the initial COVID-19 insult but are left with chronic, debilitating post-COVID fibrosis.

Recipient, donor, and surgical factors leading to primary graft dysfunction after lung transplant.

Background: Primary graft dysfunction is a major cause of early mortality following lung transplantation. The International Society for Heart and Lung Transplantation subdivides it into 4 grades of increasing severity.

Methods: A retrospective review of the institutional lung transplant database from March 2018 to September 2021 was performed.

Postreperfusion Pulmonary Artery Pressure Indicates Primary Graft Dysfunction After Lung Transplant.

Background: Primary graft dysfunction is a risk factor of early mortality after lung transplant. Models identifying patients at high risk for primary graft dysfunction are limited. We hypothesize high postreperfusion systolic pulmonary artery pressure is a clinical marker for primary graft dysfunction.

Early initiation of physical and occupational therapy while on extracorporeal life support improves patients' functional activity.

Purpose: Managing acute respiratory distress syndrome (ARDS) patients on venovenous extracorporeal membrane oxygenation (V-V ECMO), without sedation/neuromuscular blockade to allow physical and occupational therapy (PT/OT) participation, is untraditional. Here, we investigate the impact of early PT/OT initiation on discharge functional activity for ARDS patients managed on V-V ECMO.

Methods: This is a retrospective review of 67 ARDS patients managed with V-V ECMO at a single academic center from February 2018 to June 2021.

IL-1β-dependent extravasation of preexisting lung-restricted autoantibodies during lung transplantation activates complement and mediates primary graft dysfunction.

Preexisting lung-restricted autoantibodies (LRAs) are associated with a higher incidence of primary graft dysfunction (PGD), although it remains unclear whether LRAs can drive its pathogenesis. In syngeneic murine left lung transplant recipients, preexisting LRAs worsened graft dysfunction, which was evident by impaired gas exchange, increased pulmonary edema, and activation of damage-associated pathways in lung epithelial cells. LRA-mediated injury was distinct from ischemia-reperfusion injury since deletion of donor nonclassical monocytes and host neutrophils could not prevent graft dysfunction in LRA-pretreated recipients.

Ergonomics Workshop Improves Musculoskeletal Symptoms in General Surgery Residents.

Introduction: Poor operative ergonomics can lead to muscle fatigue and injury. However, formal ergonomics education is uncommon in surgical residencies. Our study examines the prevalence of musculoskeletal (MSK) symptoms, baseline ergonomics knowledge, and the impact of an ergonomics workshop in general surgery residents.

Crosstalk between nonclassical monocytes and alveolar macrophages mediates transplant ischemia-reperfusion injury through classical monocyte recruitment.

Primary graft dysfunction (PGD) is the predominant cause of early graft loss following lung transplantation. We recently demonstrated that donor pulmonary intravascular nonclassical monocytes (NCM) initiate neutrophil recruitment. Simultaneously, host-origin classical monocytes (CM) permeabilize the vascular endothelium to allow neutrophil extravasation necessary for PGD.