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Use of acute myocardial perfusion imaging (MPI) in a risk stratification scheme. Risk of cardiac events, either myocardial infarction (MI) or the combination of MI and revascularization, increased as risk level increased from level 4 to 2. Patients who had positive findings on MPI had an event rate similar to level 2 patients (high-risk acute coronary syndrome). NS = not significant.
Adapted from Ann Emerg Med,92 with permission from Elsevier.
