Fig. 2

Electrogram parameters calculation: QRS_D, QRS_A – duration and absolute maximal deviation of QRS, respectively; +AUC_QRS, −AUC_QRS – area under positive and negative part of QRS, respectively; T_A – maximal deviation of T wave; ST₂₀ – level of ST segment 20 ms after QRS offset. Positive and negative parts of QRS also contribute to calculation of area under whole QRS (AUC_QRS, not shown) positively and negatively, respectively