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: 6/22/2012 Reviewed 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.