“…As a result, the positive predictive accuracy of SAECG is generally poor, as shown by a number of clinical reports . Based on the poor performance of this and other noninvasive indices in the evaluation of arrhythmic outcomes, the need for multifactorial risk stratification has been put forward; indeed, an improved positive predictive value for major arrhythmic events, at the range of 50%, was estimated for patients with LPs, frequent premature ventricular contractions, and decreased heart rate variability . Comparable results were reported after combining SAECG with noninvasive indices describing autonomic function (such as heart rate variability, turbulence, and deceleration capacity, as well as baroreceptor sensitivity), repolarization abnormalities (such as QT prolongation, increased QT interval dispersion, or T‐wave alternans), and spontaneous ventricular arrhythmias (such as ventricular couplets or nonsustained VT) .…”