Various phases can be seen through ECG wave tracings following a heart attack:
- Hyperacute phase begins immediately after a heart attack.
- Fully evolved phase starts a few hours to days after a heart attack.
- Resolution phase appears a few weeks after a heart attack.
- Stabilized chronic phase is the last phase and typically has permanent pathological changes compared to a normal ECG tracing.
Review Date 6/18/2018
Updated by: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.