Figure 4
From: Utility of a Smartphone Based System (cvrPhone) to Predict Short-term Arrhythmia Susceptibility
Temporal changes of the repolarization alternans (ST-segment and T-wave) indices during myocardial infarction that led to spontaneous ventricular tachycardia/fibrillation (n = 4 records; 4 animals): (A) alternans noise (µnoise), (B) alternans voltage, and (C) Kscore. Time zero indicates the balloon inflation moment. Each bar graph represents 10, 25, 50, 75 and 90 percentiles of the corresponding alternans index estimated on a beat-by-beat basis for all animals, in 1 min time intervals. The asterisk indicates a statistically significant increase after occlusion compared to before occlusion (p < 0.05 for the alternans noise, p < 0.05 for the alternans voltage and p < 0.05 for the Kscore).
