Stages of Electrocardiographic (ECG) Evolution in a Patient with Acute Pericarditis
     

Overview :

The electrocardiogram (ECG) shows a series of changes during the progression of acute pericarditis.

PR Segment

ST Segment

T Wave

Stage

depressed

elevated

upright

1

isoelectric

isoelectric

flat

2

isoelectric

isoelectric

inverted

3

isoelectric

isoelectric

upright

4

where:

In Figure 7 (Hatem et al, 2001) the changes during Stage 1 are best seen in aVL, V4-V6.

  References:

Hatem CJ, Arky RA et al (editors). MKSAP 12: Cardiovascular Medicine. American College of Physicians, American Society of Internal Medicine. 2001. (Table 22 and Figure 7, page 51).