Electrocardiographic Changes in Acute Subendocardial Infarction

The electrocardiographic consequences of subendocardial infarction will find their most evident and characteristic expression in the acute has of a large lesion. Five cases of this kind are presented here and the associated electrocardiographic changes are described. At what level in the myocardium between the endocardium and epicardium do the electrocardiographic expressions of subendocardial infarction give way to those of transmural infarction Data in 6 cases of large nontransmural infarction are presented for comparison with findings in the 5 cases of subendocardial infarction.