Byron K . Lee

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BACKGROUND Endothelium-dependent vasodilation is abnormal in experimental models of diabetes mellitus. We postulated that abnormalities of endothelial function are also present in patients with insulin-dependent diabetes mellitus and may contribute to the pathogenesis of vascular disease in these individuals. METHODS AND RESULTS Vascular reactivity was(More)
OBJECTIVES This study was designed to evaluate the potential benefit of screening previously irradiated patients with echocardiography. BACKGROUND Mediastinal irradiation is known to cause cardiac disease. However, the prevalence of asymptomatic cardiac disease and the potential for intervention before symptom development are unknown. METHODS We(More)
BACKGROUND Mediastinal irradiation is known to cause cardiac disease, but its effect on left ventricular diastolic function is unknown. The purpose of this study was to determine the prevalence of diastolic dysfunction and its association with prognosis in asymptomatic patients after mediastinal irradiation. METHODS We recruited 294 patients who had(More)
Athough it is difficult to determine the precise number, the range for the number of sudden cardiac deaths (SCDs) per year in the United States alone has been reported from 184 000 to 462 000,1 with estimates that 50% to 70% are due to tachyarrhythmic mechanisms. Regardless of where within this range the true number lies, this represents a large(More)
BACKGROUND Atrial fibrillation (AF) has been linked to an inflammatory process detected through various biomarkers, including C-Reactive Protein (CRP). Early recurrence of AF within the first 3 months after curative AF ablation is not felt to reflect success or failure of the procedure. We hypothesized that this early recurrence is due to an inflammatory(More)
PURPOSE Incidental cardiac irradiation during treatment of thoracic neoplasms has increased risks for subsequent acute myocardial infarction or sudden cardiac death. Identifying patients who have a high risk for a coronary event may decrease morbidity and mortality. The objective of this study was to evaluate whether stress imaging can identify severe,(More)
BACKGROUND A decrease in inflammation after cure of atrial arrhythmias suggests that such arrhythmias are proinflammatory, and lower inflammatory marker levels in the coronary sinus suggest that atrial arrhythmias result in intracardiac appropriation of inflammatory cytokines. OBJECTIVE The purpose of this study was to investigate the effect of atrial(More)
INTRODUCTION There are no randomized controlled trial data that evaluate mortality and hospitalization rates in cardiac resynchronization therapy (CRT) recipients based on left ventricular (LV) lead location. We analyzed the event-driven outcomes of mortality and hospitalization as well as functional outcomes including Functional Class, Quality-of-Life, and(More)
516 Sudden cardiac death (SCD) remains a high priority public health problem necessitating a multi-pronged approach for treatment and prevention. Tachyarrhythmic sudden cardiac death (SCD-VT/VF; ie, death attributable to potentially reversible ventricular tachyarrhythmias [ventricular tachycardia (VT) or fibrillation (VF)]), is a major cause of SCD.(More)
BACKGROUND Atrial fibrillation (AF) may be due to an inherited trait, particularly in lone AF patients. A family history of AF in lone AF patients has not previously been compared with a family history of patients with AF and established risk factors (non-lone AF). OBJECTIVE The purpose of this study was to compare the frequency of having a first-degree(More)