Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Jan 2005
Randomized Controlled Trial Multicenter Study Clinical TrialTraditional and nonlinear heart rate variability are each independently associated with mortality after myocardial infarction.
Decreased heart rate variability (HRV) and abnormal nonlinear HRV shortly after myocardial infarction (MI) are risk factors for mortality. Traditional HRV predicts mortality in patients with a range of times post-MI, but the association of nonlinear HRV and outcome in this population is unknown. ⋯ Nonlinear HRV is associated with mortality post-MI. However, as with traditional HRV, this is diluted by CABG surgery post-MI and by diabetes. Results suggest that decreased long-term HRV and increased randomness of heart rate are each independent risk factors for mortality post-MI.