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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%
  1. ΔESPVR (or simpler PVR, pressure-volume relation): the difference between peak stress and rest ESPVR.