Publications by authors named "Matthew J Chung"

Aortic regurgitation after left ventricular assist device (LVAD) implantation is a well-described problem that decreases the clinical effectiveness of LVAD therapy and may eventually prompt consideration of aortic valve replacement once the regurgitation becomes severe. Transcatheter aortic valve replacement is an attractive, less invasive option compared with surgical aortic valve replacement in these patients. We report a valve-in-ring transcatheter aortic valve replacement for a patient with severe aortic regurgitation associated with LVAD destination therapy.

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Background: Current American College of Cardiology/American Heart Association (ACC/AHA) guidelines provide a class I recommendation for patients with type 2 diabetes mellitus and multivessel coronary artery disease (CAD) to be treated with coronary artery bypass graft surgery (CABG). However, these patients are heterogeneous in terms of the risks and benefits associated with CABG. We sought to develop a risk score to identify low-risk patients with diabetes and multivessel CAD in whom CABG can be safely deferred.

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Background: In the BARI 2D (Bypass Angioplasty Revascularization Investigation 2 Diabetes) trial, randomization of diabetic patients with stable ischemic heart disease to insulin provision (IP) therapy, as opposed to insulin sensitization (IS) therapy, resulted in biochemical evidence of impaired fibrinolysis but no increase in adverse clinical outcomes. We hypothesized that the prothrombotic effect of IP therapy in combination with the hypercoagulable state induced by active smoking would result in an increased risk of myocardial infarction (MI).

Methods And Results: We analyzed BARI 2D patients who were active smokers randomized to IP or IS therapy.

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Objectives: We sought to characterize how the perceived risk of early dual antiplatelet therapy (DAPT) discontinuation is incorporated into operator decision-making regarding stent choice, using a simple pre-procedure survey screening for clinical variables that may lead to early DAPT discontinuation.

Background: Understanding which factors influence operator decision-making regarding stent choice during percutaneous coronary intervention (PCI) could help identify areas for quality improvement.

Methods: We retrospectively identified 1202 patients who underwent PCI from July 2008 to January 2013 at the Durham Veterans Affairs Medical Center.

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Introduction The long-term risk of smoking in diabetic patients with stable ischemic heart disease (SIHD) is unknown. We sought to analyze the impact of smoking on outcomes of diabetic patients with SIHD when other cardiovascular risk factors are being aggressively treated. Methods The Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) trial randomized 2368 diabetics with SIHD to intensive medical therapy (IMT) with prompt revascularization or IMT alone.

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Background: Survivors of a myocardial infarction (MI) are at a considerable risk of developing further cardiovascular events, including recurrent MI, heart failure, stroke, and death. Patients with type 2 diabetes mellitus and stable ischemic heart disease (SIHD) have worse outcomes than their nondiabetic counterparts, and those with previous MI may be at particularly high risk. Yet, little is known about the effect of adding prompt revascularization to intensive medical therapy in this high-risk group.

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Background: Heart failure (HF) complicated by atrial fibrillation/flutter (AF/AFL) is associated with worse outcomes. However, the clinical profile and outcomes of patients following hospitalization for HF with AF/AFL on initial electrocardiogram (ECG) has not been well studied.

Methods: EVEREST was a randomized trial of vasopressin-2 receptor blockade, in addition to standard therapy, in 4133 patients hospitalized with HF with ejection fraction ≤40%.

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Purpose: Understanding the risks of bloodborne pathogen transmission is fundamental to prioritizing interventions when resources are limited. This study investigated the risks to healthcare workers in Zambia.

Design: A survey was completed anonymously by a convenience sample of workers in three hospitals and two clinics in Zambia.

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