Pericarditis, or inflammation of the pericardium, has typical ECG findings. These findings occur in progressive stages ... elevation should be greater than 4 if early repolarization is present ...

Electrocardiographic changes are common and typically evolve through four stages: Stage I ... V5 and V6 may be recorded as the first and early ECG abnormality. A typical ECG evolution is recorded ...

Diffuse T wave inversion is stage III of the ECG changes in pericarditis ... If the ratio is > 4, then early repolarization is present (the ST elevation is < 25% of the T wave amplitude).

The clinical diagnosis of acute pericarditis is based on simple criteria: typical chest pain, pericardial friction rub (Figure 2), widespread ST-segment elevation (Figure 3) and pericardial ...