What electrocardiogram (ECG) findings are characteristic of acute pericarditis?

Updated: Apr 02, 2019
  • Author: Sean Spangler, MD; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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ECG can be diagnostic in acute pericarditis and typically shows diffuse ST elevation. The ratio of the amplitude of ST segment to the amplitude of the T wave in leads I, V4, V5, and V6 on electrocardiogram can be used to differentiate acute pericarditis (AP) from early repolarization (ER) and early repolarization of left ventricular hypertrophy (ERLVH), according to a recent study. When ST elevation was present in lead I, the ST/T ratio had the best predictive value for discriminating between AP, ER and ERLVH. The study involved 25 patients with AP, 27 with ER, and 28 with ERLVH. [5]

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