Publications by authors named "Michael E Sekela"

Objectives: To evaluate the midterm survival, clinical, and hemodynamic outcomes of the On-X mechanical mitral valve, based on the 5-year results of the Prospective Randomized On-X Anticoagulation Clinical Trial (PROACT).

Methods: PROACT Mitral was a multicenter study evaluating 401 patients who underwent mitral valve replacement (MVR) with either Standard or Conform-X On-X mitral valves, comparing low-dose and standard-dose warfarin. Here, we report pre-specified, secondary outcomes of survival, New York Heart Association (NYHA) Functional Classification, and valve hemodynamics as assessed by core-lab-adjudicated echocardiography at 1, 3, and 5 years within the pooled population.

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Delayed cardiac tamponade after cardiac surgery is a rare complication with significant diagnostic challenges. The recurrence of cardiac tamponade physiology after initial intervention creates another degree of difficulty in the management of already medically complex patients. We present the case of a 65-year-old male who underwent four-vessel coronary artery bypass grafting that was complicated by the delayed presentation of cardiac tamponade requiring mediastinal exploration.

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Background: Red blood cell (RBC) transfusion is a critical supportive therapy in cardiovascular surgery (CVS). Donor selection and testing have reduced the risk of transfusion-transmitted infections; however, risks remain from bacteria, emerging viruses, pathogens for which testing is not performed and from residual donor leukocytes. Amustaline (S-303)/glutathione (GSH) treatment pathogen reduction technology is designed to inactivate a broad spectrum of infectious agents and leukocytes in RBC concentrates.

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Article Synopsis
  • The PROACT Mitral trial studied the safety and efficacy of low-dose warfarin (target INR 2.0-2.5) compared to standard-dose warfarin (target INR 2.5-3.5) in patients with an On-X mechanical mitral valve.
  • 401 patients were randomly assigned to either low-dose or standard-dose warfarin after undergoing valve replacement, with a primary focus on events like thromboembolism and bleeding.
  • Results showed that low-dose warfarin did not meet the noninferiority threshold compared to standard-dose, with similar event rates in both groups, indicating low-dose warfarin is not as effective at preventing complications.
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Objective: We tested the hypothesis that targeted TMLR combined with intramyocardial injection of autologous CD 133 progenitor cells is safe and feasible in patients with chronic ischemic cardiomyopathy (ICM) and no revascularization options.

Methods: Eight male patients (age 62 ± 2.4 years) with multivessel severe ischemic heart disease and no revascularization options were enrolled.

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This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.

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Extracorporeal membrane oxygenation (ECMO) contributes to coagulopathy, necessitating systemic anticoagulation to prevent thrombosis. Traditionally, unfractionated heparin (UFH) has been the anticoagulant of choice, however, due to many inadequacies new evidence suggests benefit with the use of direct thrombin inhibitors. This retrospective cohort sought to evaluate the safety and efficacy of bivalirudin compared to UFH in ECMO patients.

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Background: The coronavirus disease 2019 (COVID-19) pandemic has had an unprecedented impact on health care and cardiac surgery. We report cardiac surgeons' concerns, perceptions, and responses during the COVID-19 pandemic.

Methods: A detailed survey was sent to recruit participating adult cardiac surgery centers in North America.

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Aortic root abscesses are severe sequelae of endocarditis that clinically manifest as life-threatening infection. As the opioid epidemic continues to yield a national crisis, the incidence and severity of this disease process have increased. Reconstruction of the aortic root is a challenging undertaking and carries the risk of recurrent infection.

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Background: Our transplant center recently expanded the acceptance criteria for cardiac donors to increase heart transplant volume. Our purpose was to assess the success of this strategy while maintaining acceptable 1-year survival.

Methods: We retrospectively reviewed patients who underwent heart transplantation at our institution from January 2011 through December 2017.

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Generation of plasma-free hemoglobin (pfHb) and activated complement during complex cardiac surgery contributes to end-organ dysfunction. This prospective, multicenter REFRESH I (REduction in FREe Hemoglobin) randomized controlled trial evaluated the safety and feasibility of CytoSorb hemoadsorption therapy to reduce these factors during prolonged cardiopulmonary bypass (CPB). Eligible patients underwent elective, nonemergent complex cardiac surgery with expected CPB duration ≥3 hours.

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There has been a dramatic increase in intravenous drug abuse (IVDA)-related deaths in midlife Americans. Nowhere is this more profound than in rural Appalachia, with Kentucky in the midst of the epidemic. The causes of this finding are multifactorial and likely related to social, economic, legal, and population factors.

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