Table 2.
Cardiac magnetic resonance–derived morphological and functional infarct characterization
| Variable | All patients | MACE | No MACE | P-value |
|---|---|---|---|---|
| Myocardial infarction | ||||
| Infarct size (%) | 13.4 (5.4–21.8) | 20.4 (9.8–29.0) | 13.1 (5.3–21.4) | 0.001 |
| Microvascular obstruction (%) | 0.36 (0.00–2.00) | 0.88 (0.00–2.86) | 0.33 (0.00–1.93) | 0.041 |
| Area at risk (%) | 29.4 (20.3–42.6) | 33.6 (24.2–45.9) | 29.3 (20.3–42.4) | 0.068 |
| Myocardial salvage index | 54.7 (33.7–74.7) | 44.5 (23.4–69.1) | 55.5 (35.0–74.7) | 0.024 |
| Ventricular function | ||||
| LVEF (%) | 50.6 (43.5–57.6) | 40.0 (33.1–52.4) | 51.0 (44.3–57.6) | <0.001 |
| LV GLS (%) | –16.4 (–12.4, –20.1) | –11.6 (–8.3, –17.1) | –16.6 (–12.9, –20.3) | <0.001 |
| Atrial function | ||||
| LA Es (%) | 20.9 (16.3–25.8) | 16.2 (11.6–21.3) | 21.2 (16.7–26.2) | <0.001 |
| LAEF (%) | 53.3 (46.5–59.3) | 44.2 (35.2–52.0) | 53.8 (47.1–59.5) | <0.001 |
| LA LAS (%) | 17.5 (14.5–20.6) | 12.7 (9.3–17.4) | 17.7 (14.8–20.8) | <0.001 |
| LA LAS90 (%) | 19.9 (16.1–23.6) | 14.7 (10.6–19.0) | 20.2 (16.6–23.9) | <0.001 |
Data presented as median with associated interquartile range. P-values were calculated for the comparison between patients with and without MACE using the Mann–Whitney U test. Numbers in bold indicate statistical significance.
LV, left-ventricle; EF, ejection fraction; GLS, global longitudinal strain; LA, left atrium; Es, reservoir function; LAS, long-axis strain.