Page 157 - The role of advanced echocardiography in patients with ischemic heart disease - Rachid Abou

Figure 3. Left ventricular scar calculated by signal intensity on LGE-CMR. Panel A demonstrates transmural hyperenhancement on the short-axis view of the apical level of a patient with anterior infarction. Hyperenhancement is indicated by the red arrow within the yellow segments. Panel B demonstrates the endocardial (red) and epicardial (yellow) contours, which were drawn manually on the short-axis images to perform the analysis on signal intensity. The red area, as indicated by the red arrow, indicates the infarct core. The orange area as indicated by the blue arrow indicates the border zone. Ant=Anterior, Inf=inferior, LV=left ventricle, RV=right ventricle
Statistical analysis
8
Continuous variables with normal distribution are reported as mean±standard deviation. Non-normally distributed data are presented as median and interquartile range (IQR), whereas categorical variables are reported as frequencies and percentages. Bivariate correlation analysis were performed to evaluate the correlation between LV MD and the extent of LV scar burden (total scar burden, infarct core and border zone). The study population was divided into two groups according to the median LV MD (≤53.5 ms). Cumulative event rates were analysed with the Kaplan-Maier method and compared between groups with the log-rank test. Receiver operating characteristic (ROC) curve analysis was performed to evaluate and compare the discriminative power of various echocardiographic variables to predict the combined endpoint. Statistical analysis was performed on SPSS for Windows v20.0 (IBM, Armonk, New York) and MedCalc (MedCalc v17.6 (MedCalc software, Belgium). A 2-tailed p-value <0.05 was considered statistically significant.
RESULTS
Population
A total of 96 patients (mean age 57±10 years, 87% male) were included in this study (Table 1). The median levels of peak troponin T and creatine phosphokinase were
151