Comparison of wall thickening and ejection fraction by cardiovascular magnetic resonance and echocardiography in acute myocardial infarction

Table 2 Correlation of SWT scores with CMR findings and infarcted segments in echo

Baseline					Follow-up
SWT	Number of infarcted segments in echo	EF Echo	EF CMR	Infarct mass in grams	Number of infarcted segments in echo	EF Echo	EF CMR	Infarct mass in grams
< 20%	0.446	0.434	0.714	0.604	0.380	0.360	0.505	0.440
< 30%	0.498	0.449	0.744	0.591	0.474	0.382	0.561	0.545
< 40%	0.406	0.377	0.742	0.525	0.488	0.431	0.584	0.544
< 50%	0.316	0.364	0.762	0.475	0.533	0.448	0.597	0.513
< 60%	n.s.	0.386	0.737	0.369	0.555	0.470	0.633	0.500

Table 2 shows the correlation of different SWT (systolic wall thickening) scores, markers of regional wall motion abnormality, with the number of infarcted segments in echo (assessed visually, > 50% hypokinetic), late enhancement in CMR and EF in echo and CMR, in all values (p < 0.001). The best correlation of infarcted segments in echo and SWT in CMR is found at a SWT less then 30%. SWT < 30% correlates also highly significant with EF_CMR and EF_echo. Through this correlation we were able to describe a cut-off value of less than 30% SWT to define an infarcted segment in CMR with influence on the left ventricular function. Spearman test was used for linear correlations of the selected variables. n.s = not significant.

ISSN: 1532-429X