Fig. 5
From: Ionic mechanisms of ST segment elevation in electrocardiogram during acute myocardial infarction
Ventricular arrhythmia during transmural ischemia. a V3 lead electrocardiogram (ECG). b Time-lapse images of ventricular activation viewed from the top. The numbers indicate the time after onset in ms. Inset: schematic presentation of the reentrant circuit. Excitation transmitted from the His–Purkinje system (red lines) propagates rapidly in the normal myocardium (green arrow), propagates slowly in the ischemic region (light brown; thin blue arrow), and finally back-propagates to the His–Purkinje system. PMJ: Purkinje–muscle junction