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Table 3 Comparison of characteristics between detected and undetected myocardial infarctions

From: Incremental value of cardiovascular magnetic resonance over echocardiography in the detection of acute and chronic myocardial infarction

  Detected (N = 97) Undetected (N = 44) p- value
Age, y 60 ± 12 59 ± 10 0.81
Male (%) 74 (76) 33 (75) 0.87
Infarct localization (%)    0.03
 Anterior 36 (37) 8 (18)  
 Non-anterior 61 (63) 36 (82)  
Number of diseased vessels    0.85
 1 49 (51) 23 (52)  
 ≥2 48 (49) 21 (48)  
Echocardiography
 LVEF (%)
  Acute 44 ± 7 58 ± 7 <0.001
  Chronic 48 ± 7 59 ± 5 <0.001
 Days post MI
  Acute 2.0 (1.0-3.0) 4.0 (3.0-6.5) 0.001
  Chronic 101 (91–113) 104 (97–111) 0.50
 Image quality (%)    0.37
  Excellent 26 (27) 16 (36)  
  Average 61 (63) 26 (59)  
  Poor 10 (10) 2 (5)  
CMR
 Infarct size, % of LV
  Acute 16 (10–25) 6 (3–13) 0.002
  Chronic 15 (8–23) 6 (3–11) <0.001
 Infarct transmurality, %
  Acute 62 ± 14 54 ± 17 0.07
  Chronic 61 ± 16 48 ± 13 <0.001
 Number of infarcted segments
  Acute 9 ± 3 7 ± 3 0.02
  Chronic 9 ± 3 7 ± 3 0.005
  1. Values are presented as mean ± standard deviation, median and interquartile range or proportions (%) when appropriate; MI = myocardial infarction; CMR = cardiovascular magnetic resonance; LVEF = left ventricular ejection fraction.