[…] in V1 and aVR) with upright T waves, and a PR interval that deviates opposite of the P wave polarity are found during Stage I ( Figure 3 ). 3, 5 These acute findings were
Diffuse PR segment depression can also occur (read differences between Intervals and Segments ).
During acute pericarditis, ECG changes evolve through four stages as described in Table 2. 3,5,6 The hallmark ECG findings of diffusely concave upward ST elevation (not seen