Table 7 Risk stratification for a negative test
From: The clinical use of stress echocardiography in ischemic heart disease
1-year Risk (hard events) | Very low (<0.5%Â year) | Low (1-3%Â year) |
|---|---|---|
Stress | Maximal | Submaximal |
Resting EF | >50% | <40% |
Anti-ischaemic therapy | Off | On |
CFR | >2.0 | <2.0 |