Rúna Björg Sigurjonsdottir

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Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in humans and is characterized by chaotic electrical activity of the atria. It affects one in ten individuals over the age of 80 years, causes significant morbidity and is an independent predictor of mortality. Recent studies have provided evidence of a genetic contribution to AF.(More)
BACKGROUND High-sensitivity cardiac troponin T (cTnT) assays detect small clinically important myocardial infarctions (MI) but also yield higher rates of false-positive results owing to increased concentrations sometimes present in patients without MI. Better understanding is needed of factors influencing the 99th percentile of cTnT concentrations across(More)
BACKGROUND Epidemiologic reports on the effect of microbe exposure on the development of atopy and allergic asthma are inconsistent. OBJECTIVES The study investigates the association between serologic markers of infections and occurrence of atopy, allergic asthma, and rhinitis among adults in Iceland, Sweden, and Estonia. METHODS Individuals (n = 1249;(More)
BACKGROUND Red blood cell distribution width (RDW), a measure of anisocytosis, is a prognostic biomarker for heart failure (HF). However it is still unclear how RDW is associated with heart function and established cardiac biomarkers. METHODS AND RESULTS In a prospective hospital cohort of 296 patients referred for echocardiography because of suspected(More)
The public health implications from H. pylori infection are considerable but the transmission routes are largely unknown. In this study, the prevalence, patient characteristics and risk factors for Helicobacter pylori infection were comparatively investigated in Iceland, Sweden and Estonia. Blood samples were collected from 1046 subjects aged approximately(More)
OBJECTIVES Epidemiological studies of elderly heart failure (HF) patients (≥ 85 years) are limited with inconsistent findings. Our objective is to confirm and extend epidemiological study in elderly (≥ 85 years) patients using the Swedish Heart Failure Registry database. METHODS This retrospective study included 8,347 HF patients aged ≤ 65 years and(More)
BACKGROUND Although the elderly comprise the majority of acute coronary syndrome (ACS) patients, limited data exist on major adverse cardiovascular events (MACEs) and quality of life (QoL). OBJECTIVES To study MACEs and QoL prospectively in ACS patients >70years referred for coronary angiography. METHODS A prospective observational study that included(More)
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