Table 1 Classification criteria
Risk | Clinical Variables | Complementary Tests | Physical Capacity |
|---|---|---|---|
Low | Age <50 years Clinical course with no complications. Killip I No previous infarct. Asymptomatic. | No signs of ischemia. Ejection fraction >50%. Normal BP response to exercise. No arrhythmias. | ≥7 METS |
Moderate | Age >50 years Killip I or II No previous infarct. Mild symptomology. | Effort angina or mild signs of ischemia. Ejection fraction between 35-49%. Mild BP elevation with effort. Low grade arrhythmias. Reversible thallium defect with effort. | >5 METS |
High | Killip II or III Previous infarct. Symptoms with low load. | Severe ischemia. ST depression of >2 mm at a rate of less than 135 beats per minute. Hypertensive response to effort. Malignant arrhythmias. | <5 METS |