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Figure 2 Typical electromechanical maps of infarcted myocardium. Red indicates regions of abnormal electromechanical activity, whereas a region in which function remains unhindered is color-coded blue/purple. (A) Local shortening (red: abnormally contracting regions with values <4%; purple: normal contractile function >12%). (B) Unipolar electrogram amplitude (red: amplitude <8 mV; purple: >12 mV). (C) Slew rate (red: <0.8 mV/ms; purple: >2 mV/ms). (D) Endocardial impedance (red: <120 ; purple: >160 ). The two red tags indicate ablation points, which were used for correct alignment of the map and the left ventricle prior to the transmurality analysis. Reconstructed maps are shown in a left anterior oblique projection, and the white head indicates the left ventricular base).