Long-Term Recording of Cardiac Arrhythmias With an Implantable Cardiac Monitor in Patients With Reduced Ejection Fraction After Acute Myocardial Infarction. The Cardiac Arrhythmias and Risk Stratification After Acute Myocardial Infarction (CARISMA) Study
Circulation(2010)
Abstract
Background—Knowledge about the incidence of cardiac arrhythmias after acute myocardial infarction has been limited by the lack of traditional ECG recording systems to document and confirm asymptomatic and symptomatic arrhythmias. The Cardiac Arrhythmias and Risk Stratification After Myocardial Infarction (CARISMA) trial was designed to study the incidence and prognostic significance of arrhythmias documented by an implantable cardiac monitor among patients with acute myocardial infarction and reduced left ventricular ejection fraction. Methods and Results—A total of 1393 of 5869 patients (24%) screened in the acute phase (3 to 21 days) of an acute myocardial infarction had left ventricular ejection fraction ≤40%. After exclusions, 297 patients (21%) (mean±SD age, 64.0±11.0 years; left ventricular ejection fraction, 31±7%) received an implantable cardiac monitor within 11±5 days of the acute myocardial infarction and were followed up every 3 months for an average of 1.9±0.5 years. Predefined bradyarrhythmi...
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Key words
implantable cardiac monitor,cardiac arrhythmias,acute myocardial infarction,myocardial infarction,long-term
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