From: Stress echocardiography in heart failure
Risk
Low (5–10% year)
High (≥ 25–30% year)
Exercise capacity
≥ 8–10 min
<8 min
Contractile reserve
yes
no
Pulmonary hypertension
<45 mmHg
>45 mmHg
Right ventricular dysfunction
Mitral regurgitation
↓ or =
↑↑