Variable | 0–3 h (n = 65) | 0–1 h (n = 65) | p value |
---|---|---|---|
Age (years) | 71.6 ± 13.2 | 66.6 ± 14.2 | 0.041 |
Male sex | 37 (56.9) | 26 (40) | 0.054 |
Underlying disease | |||
Coronary artery disease | |||
Previous CABG | 12 (18.5) | 10 (15.4) | 0.77 |
Previous PCI | 7 (10.8) | 8 (12.3) | |
No intervention | 12 (18.5) | 10 (15.4) | |
Diabetes mellitus | 25 (38.5) | 21 (32.3) | 0.46 |
Hypertension | 45 (69.2) | 43 (66.2) | 0.71 |
Chronic kidney disease | 27 (41.5) | 23 (35.8) | 0.47 |
Stage III | 15 (23.1) | 10 (15.4) | 0.01 |
Stage IV | 11 (16.9) | 2 (3.1) | 0.24 |
GFR (mL/min/1.73m2) | 55.7 ± 25.8 | 67.1 ± 22.4 | 0.008 |
Current medication | |||
Aspirin | 32 (49.2) | 34 (5.2) | 0.65 |
P2Y12 inhibitor | 16 (24.6) | 16 (24.6) | 0.96 |
Beta-blocker | 39 (58.5) | 25 (38.5) | 0.03 |
Calcium-channel blockers | 23 (35.4) | 20 (30.8) | 0.62 |
Nitrate | 24 (36.9) | 13 (20) | 0.05 |
Anticoagulant | 9 (13.8) | 10 (15.4) | 0.78 |
Diuretic | 17 (26.2) | 8 (12.3) | 0.007 |
ACEI/ARB | 28 (43.1) | 23 (35.4) | 0.41 |
Onset of chest pain (hours) | 5.5 ± 3.5 | 3.1 ± 3.0 | < 0.001 |
Period of emergency department visit | |||
Government day time | 28 (43.1) | 29 (44.6) | 0.99 |
Government night time | 19 (29.2) | 19 (29.2) | |
Public holiday | 18 (27.7) | 17 (26.2) | |
Initial electrocardiogram | |||
ST depression | 15 (23.1) | 11 (16.9) | 0.54 |
T wave inversion | 13 (20) | 8 (12.3) | |
Pathologic q wave | 5 (7.7) | 10 (15.4) | |
LBBB | 3 (4.6) | 2 (3.1) | |
RBBB | 6 (9.2) | 4 (6.2) | |
Arrhythmia | 5 (7.7) | 7 (10.8) | |
Treatment in emergency department | |||
Aspirin | 27 (41.5) | 15 (23.1) | 0.04 |
P2Y12 inhibitor | 24 (36.9) | 17 (26.2) | 0.19 |
Morphine | 3 (4.6) | 0 (0) | 0.08 |
Nitroglycerine | 23 (35.4) | 14 (21.5) | 0.08 |
Intravenous furosemide | 28 (43.1) | 18 (27.7) | 0.07 |
Anticoagulant | 26 (40) | 19 (29.2) | 0.2 |
Oxygen | 37 (56.9) | 17 (26.2) | < 0.001 |