Criteria for diagnosis of posterior STEMI include:
- ST-depression ≥0.5mm in leads V1-V3.
- Associated T-waves are either upright or inverted.
- Appearance of tall R-waves in V1-V2 (may be delayed).
- Recommended: posterior chest wall leads (V7-V9 ≥0.5 mm* ST-elevation).
*may be decreased secondary to increased distance of posterior leads from heart.
