Non-invasive risk stratification for sudden cardiac death by heart rate turbulence and microvolt T-wave alternans in patients after myocardial infarction.

Aims: To evaluate the predictive value of heart rate turbulence (HRT) and microvolt T-wave alternans (mTWA) for sudden cardiac death (SCD) in patients after myocardial infarction (MI).

Methods And Results: We studied 111 patients with MI in the previous 60 days (median, 27 [9;84] months) before inclusion (84 men, mean age 64.1 ± 10.