Correlation between electroanatomic map and pathological sections of infarcted heart

Panel A shows a section of the left ventricle in a patient with a subendocardial myocardial infarction (arrow). The superimposed colors in the reconstruction from an electroanatomic map (panel B) depict bipolar electrogram amplitude (BEA); purple indicates values >6.1 mV; red indicates values <2.1 mV. Beneath the reconstructed sections (panel C) are typical recordings of unipolar electrogram and derivatives, the unipolar electrogram amplitude (UEA) and slew rate (SR) and bipolar electrogram and amplitude from selected points at the core of the infarcted region (the distance between two white marks on the electrogram time scale denotes a 50-millisecond period).