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