Distinction between arrhythmic and nonarrhythmic death after acute myocardial infarction based on heart rate variability, signal-averaged electrocardiogram, ventricular arrhythmias and left ventricular ejection fraction

摘要: Objectives. We investigated whether heart rate variability, the signal-averaged electrocardiogram (ECG), ventricular arrhythmias and left ejection fraction predict mechanism of cardiac death after myocardial infarction. Background. Postinfarction risk stratification studies have almost exclusively focused on predicting arrhythmic death. The factors that identify distinguish persons at for nonarrhythmic are poorly known. Methods. Heart ECG, were assessed in 575 survivors acute patients followed up 2 years; deaths used as clinical end points. During follow-up period, 47 occurred, 29 (62%) 18 (38%) nonarrhythmic. Results. All associated with mortality univariate analysis. With exception fraction, they also predictors Depressed variability (p Conclusions. Arrhythmic was predominantly depressed tachycardia runs, low ectopic beats variability. A combination identified patient groups which a majority either or