Figure 7
From: Utility of a Smartphone Based System (cvrPhone) to Predict Short-term Arrhythmia Susceptibility

Relationship of repolarization (ST-segment and T-wave) alternans vs ischemic index (A) during myocardial infarction and (B) preceding ventricular tachycardia/fibrillation. Alternans voltage (μV) versus ischemic index (upper panel), and Kscore versus ischemic index (lower panel). The color bars on the right side show time after coronary artery occlusion from 0 min to 5 min. The dashed line at each plot represents a data fitting line with a single-term exponential model. (D) PVS that was employed at baseline and after coronary artery occlusion, MI (N = 9), to assess the arrhythmogenic potential of RA. Although the Srank at baseline and after coronary artery occlusion was not statistically different, yet it trended towards a higher value after occlusion.