Table 1.
Baseline characteristics of the study population.
| Total STEMI (n = 129) | LVEF <55% (n = 85) | LVEF ≥55% (n = 44) | P-value | |
|---|---|---|---|---|
| Age, years | 55 (48–63) | 52 (46–63) | 56 (50–62) | 0.26 |
| Male, n (%) | 112 (87) | 71 (84) | 41 (93) | 0.12 |
| Body mass index, kg/m2 | 25.4 (23.8–27.7) | 25.5 (23.8–27.9) | 25.4 (23.2–27.1) | 0.52 |
| Hypertension, n (%) | 64 (50) | 44 (52) | 20 (46) | 0.50 |
| Hyperlipidemia, n (%) | 93 (72) | 61 (72) | 32 (73) | 0.91 |
| Diabetes mellitus, n (%) | 40 (31) | 25 (29) | 15 (34) | 0.59 |
| Smoker, n (%) | 92 (71) | 57 (67) | 35 (80) | 0.14 |
| Ischemia time, h | 5.0 (3.0–7.8) | 5.0 (3.0–7.3) | 5.0 (3.0–8.0) | 0.81 |
| TIMI flow pre-PCI, n (%) | 0.02 | |||
| 0 | 71 (55) | 54 (63) | 17 (39) | |
| 1 | 10 (8) | 6 (7) | 4 (9) | |
| 2 | 15 (12) | 10 (12) | 5 (11) | |
| 3 | 33 (25) | 15 (18) | 18 (41) | |
| TIMI flow post-PCI, n (%) | 1.00 | |||
| 0 | 2 (1) | 1 (1) | 1 (2) | |
| 1 | 0 (0) | 0 (0) | 0 (0) | |
| 2 | 1 (1) | 1 (1) | 0 (0) | |
| 3 | 126 (98) | 83 (98) | 43 (98) | |
| Number of diseased vessels | 0.63 | |||
| 1 | 49 (38) | 32 (38) | 17 (39) | |
| 2 | 47 (36) | 31 (36) | 16 (36) | |
| 3 | 33 (26) | 22 (26) | 11 (25) | |
| Admission creatinine, μmol/L | 74.6 (65.2–85.2) | 74.8 (65.0–86.0) | 73.1 (66.2–84.4) | 0.88 |
| Peak cTnI, ng/mL | 27.0 (9.5–53.3) | 33.5 (18.2–60.1) | 13.5 (6.6–31.6) | 0.001 |
| Time of peak cTnI, h | 20 (14–27) | 21 (15–27) | 19 (12–27) | 0.38 |
| Peak NT-proBNP, pg/mL | 1,364.5 (729.1–2,889.1) | 1,666.1 (915.9–3,215.3) | 914.7 (404.7–2,072.2) | 0.001 |
| Time of peak NT-proBNP, h | 29 (22–42) | 32 (24–49) | 26 (19–32) | 0.004 |
PCI, percutaneous coronary intervention; cTnI, cardiac troponin I; NT-proBNP, N terminal pro B type natriuretic peptide.