Subtle Changes in Myocardial Work Indices Assessed by 2D-Speckle Tracking Echocardiography Are Linked with Pathological LV Remodeling and MACEs Following an Acute Myocardial Infarction Treated by Primary Percutaneous Coronary Intervention

Figures

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  Figure 1. Bull’s eye of baseline GLS, GWI, and GWE in a STEMI patient without (A) and with (B) LV remodeling. In the global longitudinal strain Bull’s eye, the bright red color denotes a normal range in strain values (<−16%), light red denotes reduced value (−16 to −11%), light pink (−10 to −6%) and pale pink (−5 to 0%) denote severely reduced values, and blue denotes a positive value suggesting paradoxical systolic expansion. In the myocardial work index Bull’s eye, the green color represents the constructive myocardial work, while the blue color represents the waisted myocardial work. Abbreviations: GLS, global longitudinal strain; GWI, global work index; GWE, global work efficiency; STEMI, ST-segment elevation acute myocardial infarction; LV, left ventricular.

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  Figure 2. Comparison of the ROC curves of the independent predictors of LV remodeling in STEMI patients. Abbreviations: ROC, receiver operating curve, AUC, area under the curve, LV, left ventricular, ST-segment elevation acute myocardial infarction; GWI, global work index; GWE, global work efficiency.

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  Figure 3. Kaplan-Meier survival curves without major cardiac events in STEMI patients with and without LV remodeling. Abbreviations: ST-segment elevation acute myocardial infarction; LV, left ventricular.

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  Figure 4. Significant positive correlation between MACEs and early LV remodeling. Abbreviations: MACEs, major cardiac events; LV, left ventricular.

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  Figure 5. Comparison of the ROC curves of the independent predictors of MACEs in STEMI patients. Abbreviations: MACEs, major cardiac events; STEMI, ST-segment elevation acute myocardial infarction; ROC, receiver operating curve, AUC, area under the curve, GWE, global work efficiency; GWI, global work index, CPK-MB, creatine kinase MB- isoenzyme.