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Table 4 Dynamic changes of LGE, MVO and IMH within the first week following STEMI

From: Dynamic changes in injured myocardium, very early after acute myocardial infarction, quantified using T1 mapping cardiovascular magnetic resonance

  Time from reperfusion Pairwise comparison (P value)
<  3 h 24 h 6 days A* B* C*
Ejection fraction (EF) (%) 49 ± 11 48 ± 11 51 ± 9 0.66 0.45 0.21
End Diastolic Volume (EDV) (ml) 162 ± 33 168 ± 33 177 ± 29 0.11 0.001 0.015
End Systolic Volume (ESV)(ml) 83 ± 27 89 ± 27 89 ± 24 0.085 0.057 1.0
Late gadolinium enhancement (LGE) (LV %) 27 ± 16 26 ± 16 27 ± 19 1.0 0.99 0.87
Microvascular obstruction (MVO) (LV %) 4.0 ± 4.9 4.1 ± 6.0 2.4 ± 3.4 1.0 0.02 0.011
MVO prevalence (n, %) 11 (44%) 17 (56%) 12 (55%)
Intra-myocardial haemorrhage (IMH) mm2 0.7 ± 1.6 1.4 ± 1.6 1.1 ± 1.4 0.012 0.46 0.69
IMH prevalence (n, %) 9 (36%) 14 (47%) 10 (45%)
  1. All data are presented as mean ± SD, * A (comparison between < 3 & 24 h), B (comparison between < 3 h & 6 days), and C (comparison between 24 h & 6 days)