Pseudomyocardial infarction and hyperkalemia: a case report and subject review.

A case of diabetic ketoacidosis with hyperkalemia and ECG evidence of pseudomyocardial infarction is presented. Electrocardiogram abnormalities resolved shortly after treatment of the elevated potassium. The electrophysiology of hyperkalemia and theories to explain observed ECG changes are discussed. Pseudoinfarction changes that may be peculiar to patients with diabetic ketoacidosis and hyperkalemia are examined.