Table 3.
Analysis of cardiac magnetic resonance findings.
| Overall Population (n = 360) | IPTW Population (n = 718) | |||||
|---|---|---|---|---|---|---|
| High Serum Lactate | Low Serum Lactate | p Value | High Serum Lactate | Low Serum Lactate | p Value | |
| (n = 119) | (n = 241) | (n = 358) | (n = 360) | |||
| Myocardial infarct size (%, of LV) | 22.0 ± 11.4 | 18.9 ± 10.5 | 0.011 | 21.5 ± 11.1 | 19.2 ± 10.4 | 0.044 |
| Area at risk (%, of LV) | 37.4 ± 17.7 | 32.1 ± 15.1 | 0.003 | 37.0 ± 17.2 | 32.7 ± 15.0 | 0.013 |
| Myocardial salvage index | 41.1 ± 16.6 | 41.6 ± 16.8 | 0.780 | 41.5 ± 16.8 | 41.8 ± 16.8 | 0.865 |
| MVO area (%, of LV) | 3.9 ± 5.7 | 3.6 ± 5.4 | 0.597 | 3.7 ± 5.5 | 3.6 ± 5.4 | 0.680 |
| Hemorrhagic infarction | 53 (44.9) | 96 (39.8) | 0.359 | 166 (46.3) | 143 (39.8) | 0.194 |
| LV end diastolic volume (mL) | 149.4 ± 42.3 | 151.7 ± 40.9 | 0.623 | 151.2 ± 40.2 | 150.8 ± 41.2 | 0.915 |
| LV end systolic volume (mL) | 77.6 ± 39.6 | 75.1 ± 36.8 | 0.557 | 77.0 ± 36.1 | 75.3 ± 36.9 | 0.663 |
| LV ejection fraction (%) | 50.1 ± 11.8 | 52.3 ± 11.2 | 0.090 | 50.7 ± 11.0 | 51.8 ± 11.3 | 0.354 |
| LV stroke volume (mL) | 71.8 ± 17.3 | 76.6 ± 16.7 | 0.011 | 74.2 ± 17.7 | 75.5 ± 16.8 | 0.489 |
| LV cardiac output (L/min) | 5.1 ± 1.1 | 5.2 ± 1.1 | 0.669 | 5.2 ± 1.1 | 5.1 ± 1.1 | 0.573 |
Data are presented as n (%) or mean ± standard deviation. IPTW = Inverse probability of treatment weighting, LV = left ventricle (ventricular), MVO = microvascular obstruction.