Table 2 STEMI data, angiography findings and revascularization
Variable | Normal group (n = 70) | HFmrEF group (n = 32) | HFrEF group (n = 17) | P value |
|---|---|---|---|---|
Killip grade |  |  |  |  < 0.001 |
 Grade I(%) | 65 (92.9) | 20 (62.5) | 10 (58.8) |  |
 Grade II (%) | 4 (5.7) | 9 (28.1) | 3 (17.6) |  |
 Grade III (%) | 0 (0) | 0 (0) | 1 (5.9) |  |
 Grade IV (%) | 1 (1.4) | 3 (9.4) | 3 (17.6) |  |
Peak TnI, ng/ mL | 42.0 (11.2–81.0) | 72.3 (5.36–83.2) | 65.7 (10.7–112.4) | 0.811 |
Thrombolysis (%) | 15 (21.4) | 11 (34.4) | 2 (11.8) | 0.168 |
PCI (%) | 67 (95.7) | 30 (93.8) | 13 (76.5) | 0.064 |
No thrombolysis or PCI (%) | 3 (4.3) | 2 (6.3) | 4 (23.5) | 0.064 |
Time of symptom-to-flow restored, h | 4.9 (2.5–10.8) | 5.0 (3.0–24.4) | 144.0 (5.3–264.0) | 0.010 |
Culprit vessel | Â | Â | Â | 0.006 |
 LAD (%) | 33 (47.1) | 24 (75.0) | 13 (76.5) |  |
 LCX (%) | 10 (14.3) | 1 (3.1) | 0 (0) |  |
 RCA (%) | 27 (38.6) | 5 (15.6) | 3 (17.6) |  |
TIMI flow in culprit vessel pre-PCI < 3 (%) | 40 (57.1) | 15 (50.0) | 10 (58.8) | 0.314 |
Slow flow/no-reflow during PCI (%) | 13 (18.6) | 5 (15.6) | 4 (23.5) | 0.300 |
ECG parameters | Â | Â | Â | Â |
 ST segment elevation level, mV | 0.3 (0.2–0.4) | 0.5 (0.3–0.6) | 0.5 (0.2–0.5) | 0.023 |
 Time of STR > 50% to symptoms, h | 8.1 (4.4–39.1) | 13.8 (5.1–95.1) | 96.0 (17.0–258.5) | 0.001 |
 Time of STR > 50% to PCI, h | 0.7 (2.0–35.0) | 2.6 (0.9–20.6) | 22.1 (4.4–91.4) | 0.171 |