We showed for the first time that the ΔESPVR index, an index of myocardial contractile function easily obtained during routine stress echocardiography, can be noninvasively calculated during a dipyridamole stress-CMR exam. The ΔESPVR index was independent from baseline LV dimensions and function while it was lower in patients with myocardial fibrosis and in patients with abnormal stress CMR. At receiver-operating characteristic curve analysis, a ΔESPVR<0.02 predicted the presence of future cardiac events, being useful for additional prognostic stratification.
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