Table 4 Negative stress echo by wall motion criteria: further prognostic refinement
From: Myocardial contractility in the stress echo lab: from pathophysiological toy to clinical tool
RISK | Not-so-low | Very low |
|---|---|---|
Dose/load | Submaximal | Maximal |
Resting ejection fraction | <40% | >50% |
Anti-ischemic therapy | + | - |
Coronary flow reserve (ratio) | <2.0 | >2.0 |
Contractile reserve (ΔESPVR, mmHg/mL/m2) | <0.4 | >0.4 |
Hard events/year | >3% | <1% |