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
Update Date 6/22/2012
Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Michael A. Chen, MD, PhD, Assistant Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.