Circadian variation of heart rate variability in postinfarction patients with and without life-threatening ventricular tachyarrhythmias.


INTRODUCTION Determination of heart rate variability (HRV) is widely used for noninvasive assessment of cardiac autonomic tone. A decreased HRV is associated with an increased mortality in patients surviving an acute myocardial infarction. There are, however, only sparse data about the circadian variation of different components of HRV that may be linked to… (More)


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