An unusual electrocardiographic pattern associated with mild myocardial infarction ∗

Abstract

1. (1) An unusual ECG pattern of mild acute myocardial infarction is described consisting of ST segment depressions and lowering of the R waves, usually in the same leads. 2. (2) The ECG abnormalities are usually limited to a small area of the heart. 3. (3) The clinical course of patients showing these changes is mild, and the ECG usually returns to normal. 4. (4) The infarcts responsible for this ECG pattern are probably patchy and incomplete.