Effects of Ketone Body 3-Hydroxybutyrate on Cardiac and Mitochondrial Function During Donation After Circulatory Death Heart Transplantation
A study led by Jacob Marthinsen Seefeldt et al. explored the impact of the ketone body 3-hydroxybutyrate (3-OHB) on cardiac and mitochondrial function in the context of heart transplantation following circulatory death. The research utilized normothermic regional perfusion (NRP) to assess the effects of therapeutic interventions in donor pigs, which were later transplanted into recipient…
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Optimizing PEEP Management in Severe ARDS: The Role of Prone Positioning and ECMO
In the review article titled “Positive End-Expiratory Pressure Management in Patients with Severe ARDS: Implications of Prone Positioning and Extracorporeal Membrane Oxygenation,” authored by Christoph Boesing and colleagues and published in Critical Care, the ongoing challenge in managing severe acute respiratory distress syndrome (ARDS) revolves around determining the optimal strategy for titrating positive end-expiratory pressure…
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Efficient and Safe Aorta Cannulation in Organ Donation After Cardiac Death
Mohamed Abdullah et al. present an efficient and safe technique for cannulating a depressurized aorta during organ donation after cardiac death, utilizing thoracoabdominal normothermic regional perfusion (NRP). The procedure, performed with informed written consent from donors’ families and without needing institutional review board approval, begins after an independent physician declares death and a mandatory standoff…
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Comparing Post-Transplant Survival in Heart Transplants: Normothermic Regional Perfusion vs. Direct Procurement and Perfusion
A new study led by Gege Ran BA and colleagues examines the outcomes of heart transplants from donors after circulatory death (DCD), focusing on the two main heart procurement techniques: Normothermic Regional Perfusion (NRP) and Direct Procurement and Perfusion (DPP). Since 2019, the use of DCD hearts in transplantation has surged in the United States,…
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The Multifactorial Dynamic Perfusion Index: A Predictive Tool of Cardiac Surgery-Associated Acute Kidney Injury
Marco Ranucci and a team of dedicated colleagues have introduced a multifactorial dynamic perfusion index (MDPI) to enhance the prediction of cardiac surgery-associated acute kidney injury (CSA-AKI). This collaborative study, involving a retrospective analysis of 910 consecutive adult cardiac surgery patients, aimed to develop a dynamic predictive model that incorporates various preoperative and intraoperative risk…
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Risk Factors for Elective and Emergency Oxygenator Exchanges During Veno-Venous Extracorporeal Membrane Oxygenation
Oxygenator dysfunction remains a prevalent technical complication during Extracorporeal Membrane Oxygenation (ECMO) despite systemic anticoagulation and antithrombotic surface coating measures. The timing of oxygenator exchange, particularly emergency exchanges, presents a significant risk due to potential complications. This study by Olivier van Minnen et al. aimed to identify the risk factors and predictors for both elective…
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Innovative Apparatus for Cardiac Output Determination Using Electrical Polarization of Red Blood Cells
This newsletter introduced a groundbreaking apparatus for determining cardiac output via a percutaneous catheter that transfers electrical charges to the membrane of red blood cells (by Condello et Al. Polaris group). This device holds significant promise for clinical medicine and research, offering critical applications such as continuous cardiac output monitoring in ICU patients, real-time assessment…
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Early United States Experience Shows Comparable Outcomes for Heart Transplants from Circulatory Death Donors
A study on heart transplantation following donation after circulatory death (DCD) conducted by Syed Shahyan Bakhtiyar has revealed significant trends and outcomes in the United States. The study analyzed data from adult heart transplant recipients between December 2019 and September 2023, identifying 11,625 transplantations. Of these, 792 transplants (7%) involved DCD allografts, with 249 using…
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Comparison Between the Protective Effect of Isoflurane and Propofol on Myocardium During Coronary Artery Bypass Grafting: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Qi Bao et al. conducted a study to compare the cardioprotective effects of isoflurane, a volatile anesthetic, with propofol, an intravenous non-volatile anesthetic, in patients undergoing coronary artery bypass grafting (CABG). The authors performed a systematic review and meta-analysis of randomized controlled trials, searching databases including MEDLINE, Embase, PubMed Central, ScienceDirect, Google Scholar, and Cochrane…
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Hypothermic Circulatory Arrest at 20°C: No Increased Coagulopathy Risk Compared to 28°C in Pig Model
In recent years, the debate over the optimal temperature setting for hypothermic circulatory arrest (HCA) during thoracic aortic surgery has intensified. Traditionally, it’s been assumed that lower temperatures might exacerbate coagulopathy, leading to excessive bleeding. However, clinical studies devoid of confounding factors have been scarce. This study by Hayato Ise aims to provide clarity on…
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Changes in Colloid Oncotic Pressure During Cardiac Surgery with Different Prime Fluid Strategies
In cardiac surgery, the colloid oncotic pressure (COP) can be significantly affected by the haemodilution due to the composition and volume of the prime fluid used in cardiopulmonary bypass (CPB). However, the extent to which different priming strategies alter COP has not been fully understood. To address this, Anne Maria Beukers conducted a study investigating…
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Prognostic Implication of Vasoactive Inotropic Score in Adult Patients with Cardiogenic Shock on VA-ECMO
A recent study by Yao Hu explores the prognostic significance of the Vasoactive Inotropic Score (VIS) in adult patients with cardiogenic shock (CS) undergoing veno-arterial extracorporeal membrane oxygenation (VA-ECMO). The VIS, a scoring system assessing the impact of vasoactive drugs, is crucial for managing CS by enhancing microcirculation. Although extensively studied in pediatric patients, its…
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