Table 3 Comparison of characteristics between detected and undetected myocardial infarctions
|  | 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 (%) | Â | Â | 0.03 |
 Anterior | 36 (37) | 8 (18) |  |
 Non-anterior | 61 (63) | 36 (82) |  |
Number of diseased vessels | Â | Â | 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 |