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Table 3 CMR characteristics for Control and PostC, long-term follow-up

From: Long-term impact of postconditioning on infarct size and left ventricular ejection fraction in patients with ST-elevation myocardial infarction

Control, n=35 PostC, n=33
  1 week 3 months 12 months 1 week 3 months 12 months
LV end-diastolic volume index, ml/m 2 89 (80, 99) 88 (77,103) 86 (70, 104) 79 (73, 84) 85 (77, 99) 79 (73, 91)
LV end-systolic volume index, ml/m 2 49 (37, 56) 44 (35, 58) 39 (33, 57) 43 (36, 55) 43 (37, 55) 40 (32, 48)
Sphericity index, end-diastole 0.39 (0.35, 0.42) 0.39 (0.32, 0.47) 0.38 (0.33, 0.44) 0.38 (0.34, 0.45) 0.40 (0.35, 0.44) 0.37 (0.33, 0.44)
LV-mass index, g/m 2 68 (60, 75) 61 (55, 69)** 60 (55, 67)***, # 65 (59, 75) 59 (56, 70)*** 57 (54, 68)***
Infarct size, % of LV mass 8.0 (5.5, 14.1) 6.6 (4.3, 13.6)*** 6.0 (4.3, 13.1)*** 9.9 (5.5, 14.9) 8.8 (5.0, 11.5)*** 7.6 (4.9, 12.2)***
Infarct size, g 12.3 (7.5, 23.8) 9.1 (5.4, 21.1)*** 7.8 (4.9, 19.8)***, ## 11.2 (7.7, 25.5) 10.1 (6.2, 18.8)*** 10.6 (5.4, 16.9)***
Infarct size, % of ACS 39 (27, 54) 33 (21, 44)*** 31 (23, 41)*** 41 (26, 54) 31 (22, 45)*** 31 (23, 43)***
Microvascular obstruction (LGE), % of LV mass 2.0 (1.4, 2.8) - - 1.8 (1.1, 2.8) - -
  1. Median and inter quartile range. ACS Abnormally contracting segments; LGE Late gadolinium enhancement, LV Left ventricle. * p < 0.05; ** p < 0.01; *** p < 0.001 vs. 1 week; # p < 0.05, ## p < 0.01 vs. 3 months. Wilcoxon sign rank test with Bonferroni correction.