Prognostic Value of Myocardial Viability Detected by Myocardial Contrast Echocardiography Early After Acute Myocardial Infarction
Girish Dwivedi, MD, MRCP, DM,
Rajesh Janardhanan, MD, MRCP,
Sajad A. Hayat, MBChB, MRCP,
John M. Swinburn, MD, MRCP and
Roxy Senior, MD, DM, FRCP, FESC, FACC*
Department of Cardiovascular Medicine, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, Middlesex, United Kingdom.
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Figure 1 Receiver-Operator Characteristic Curve
(A) Receiver-operator characteristic curve showing different cutoff points with CDI for the prediction of cardiac death. (B) Receiver-operator characteristic curve showing different cutoff points with CDI for the prediction of cardiac death or nonfatal AMI. AMI = acute myocardial infarction; CDI = contrast defect index; NPV = negative predictive value; PPV = positive predictive value.
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Figure 2 Kaplan-Meier Survival Curve
(A) Kaplan-Meier survival curve (unadjusted) using a cutoff of CDI of 1.86 for the prediction of cardiac death. (B) Kaplan-Meier survival curve using a cutoff of CDI of 1.67 for the prediction of cardiac death or nonfatal AMI. F/U = follow-up; other abbreviations as in Figure 1.
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Figure 3 Kaplan-Meier Survival Curve
(A) Kaplan-Meier survival curve in patients with preserved LVEF (i.e., >50%) using a cutoff of CDI of 1.67 for the prediction of cardiac death or nonfatal AMI. (B) Kaplan-Meier survival curve in patients with decreased LVEF (i.e.,  50%) using a cutoff of CDI of 1.67 for the prediction of cardiac death or nonfatal AMI. LVEF = left ventricular ejection fraction; other abbreviations as in Figures 1 and 2.
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Figure 4 Incidence of Cardiac Events in Different LVEF Groups
Occurrence of cardiac death or nonfatal AMI in various LVEF groups according to CDI. Abbreviations as in Figures 1 and 3.
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