Myocardial perfusion imaging with 99mTc / dipyridamole.
Teaching points:
The aim of risk stratification in stable AMI survivors is to rapidly identify high-risk patients who might benefit from cardiac revascularization, and low-risk patients for whom medical therapy and early hospital discharge is appropriate.
Revascularization does not improve outcome beyond medical therapy when there is minimal or no induced ischemia.
Post MI, relative risk for cardiac events significantly increases as LVEF decreases: An LVEF ≥50% predicts a 1- year event rate of 5%, which reaches 27% in patients with an LVEF <20%.
