Search results for "Infarction"
showing 10 items of 1208 documents
280 Impact of ozone air pollution on ischemic cerebral and cardiac events in Dijon, France
2011
Background There is strong evidence that short-term exposure to ozone (O3) is associated with respiratory disease and death, but the effects of short-term exposure to ozone on ischemic heart and cerebrovascular disease have not been clearly established. Methods Daily levels of urban O3 pollution, the incidence of first-ever, recurrent, fatal and non-fatal ischemic cerebro-vascular events (ICVE) and myocardial infarction (MI) were compared using a bi-directional case-crossover design analysis. We analysed 1 574 ICVE and 913 MI that occurred in Dijon, France from 2001 to 2007. Sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), particulate matter with an aerodiameter of 10μg/…
Making it More Sensitive
2011
About a decade ago, the prevailing wisdom was that conventional risk factors explained only approximately half of the risk for a myocardial infarction or stroke. Consequently, efforts to identify novel risk factors were undertaken to improve cardiovascular risk prediction. The hypothesis that inflammation is a central contributor to atherothrombosis has stimulated sustained efforts to characterize the specific molecules and pathways that may be involved and to identify biomarkers in humans that enable detection of underlying inflammatory activation to improve cardiovascular risk prediction. Ridker et al1 pioneered this work and reported that systemic low-grade inflammation assessed by measu…
Primary percutaneous transluminal coronary angioplasty for Acute Myocardial Infarction in patients not included in randomized studies
1999
Abstract Patients with acute myocardial infarction included in randomized trials comparing primary percutaneous transluminal coronary angioplasty (pPTCA) with thrombolysis represent a special subgroup of patients with a low event rate. Patients excluded from these trials represent a variety of different subgroups, with different patient characteristics and possibly different clinical event rates. Primary PTCA was performed in 491 consecutive patients with acute myocardial infarction in the prospective multicenter observational Maximal Individual Therapy in Acute Myocardial Infarction trial. They were divided into the following groups: group I, patients fulfilling the inclusion criteria of t…
Low-density-lipoprotein peak particle size in a Mediterranean population
2003
Background The predominance of small, dense low-density lipoprotein (LDL) particles (‘LDL phenotype B’) has been associated with a three-fold increased risk of myocardial infarction, but the feasibility of the identification of small, dense LDL as independent predictors of coronary artery disease risk in population studies remains questioned. Design We evaluated the LDL peak particle size and its relation with other established risk factors for coronary heart disease in a group of 156 randomized subjects living on the Mediterranean island of Ustica (71 males and 85 women, range of age 20–69 years), representing approximately 30% of the total population. Results The prevalence of LDL phenoty…
Effect of Scar Development on Fast Electrophysiological Models of the Human Heart: In-Silico Study on Atlas-Based Virtual Populations
2011
The main goal of this work is to study the effect of scar development in the electrophysiological function of the human left ventricle by statistically analyzing large-scale simulation data including hypertrophic and dilated hearts. Electrophysiological simulations are obtained by solving the classical Eikonal equation in both the ventricular tissue and a customized Purkinje system. This Purkinje system is obtained assuming a geodesic rule to connect different Purkinje-myocardial junctions into a tree-like structure. Infarction shape and function is modeled with taking into account the occlusion in coronary arteries. Infarct, core and border zones of the scar are estimated by calculating bl…
Subclinical atherosclerosis: independent predictor of cardiovascular events in a 20-years follow up of patients with or without metabolic syndrome
2013
Purpose: To evaluate the influence of carotid atherosclerosis and metabolic syndrome (MetS) on the prediction of cardiovascular events during a 20-years follow-up. Methods: We studied a population of 529 asymptomatic patients, divided into 2 groups according to the results of the carotid ultrasound evaluation: one without atherosclerotic lesions (198 patients) and a second one with an increased carotid IMT or asymptomatic carotid plaque (331 patients). In each of these groups, we identified two subgroups of subjects with and without MetS. Cardiovascular endpoints were investigated in a 20-years follow-up: acute myocardial infarction, angina, transient ischemic attack, ischemic stroke, abdom…
Mechanism of reperfusion damage after thrombolysis and ‘direct PTCA’
1997
Summary There is general agreement between cardiologists, that reperfusion of the infarct related coronary artery (PTCA) is the method of choice for the treatment of an acute myocardial infarction. However, the method utilized for inducing a rapid and complete reperfusion is still discussed. Even if thrombolysis will remain the method of choice for the major part of the population, part of the patient cohort with acute infarction will be treated by direct PTCA. Rapid reperfusion of ischemic myocardium reduces infarct size by limiting infarct extension into the entire area at risk, although a reperfusion damage is induced in the core ischemic area. This reperfusion damage has been convincing…
ACTIVATION (PercutAneous Coronary inTervention prIor to transcatheter aortic VAlve implantaTION)
2021
Abstract Objectives This study sought to determine if percutaneous coronary intervention (PCI) prior to transcatheter aortic valve replacement (TAVR) in patients with significant coronary artery disease would produce noninferior clinical results when compared with no PCI (control arm). Background PCI in patients undergoing TAVR is not without risk, and there are no randomized data to inform clinical practice. Methods Patients with severe symptomatic aortic stenosis and significant coronary artery disease with Canadian Cardiovascular Society class ≤2 angina were randomly assigned to receive PCI or no PCI prior to TAVR. The primary endpoint was a composite of all-cause death or rehospitalizat…
AB0266 METHOTREXATE AND CARDIOVASCULAR RISK IN RHEUMATIC DISEASES:A COMPREHENSIVE REVIEW
2021
Background:The management of inflammatory rheumatic disease has evolved in the last decade with the importance of the management of comorbidities. Methotrexate is the cornerstone of inflammatory rheumatic disease management, but its cardiovascular effects are still poorly understoodObjectives:To assess the cardiovascular impact of methotrexate in inflammatory rheumatic disease.Methods:A systematic review of the literature, following the prisma recommandations, was performed on the PubMed and Embase databases with the following keywords: (“Methotrexate”) AND (“cardiovascular”). We included papers written in English and including patients older than 18 years.Results:570 references were identi…
Safety and efficacy of exercise testing with atropine in patients with recent uncomplicated ST elevation acute myocardial infarction
2012
Background: Exercise testing (ET) remains the most accessible and widely used technique for the detection of coronary artery disease (CAD) and for the assessment of its severity. Failure to reach 85% of maximal predicted heart rate (MPHR) during exercise may render an ET nondiagnostic for ischemia detection in patients with recent uncomplicated ST elevation acute myocardial infarction (STEMI). We sought to investigate the injection of atropine in patients who fail to achieve 85% of age-predicted heart rate during ET, defining its safety and efficacy to raise heart rate to adequate levels as well as to determine its effect on ET interpretation. Methods: Between January 2005 and December 2008…