Table 1. Baseline characteristics of the AMI population.
| Characteristic | Total N = 543 | STEMI N = 312 (57.46%) | NSTEMI N = 231 (42.54%) | P-value |
|---|---|---|---|---|
| Age (y), mean ±SD | 57.45 ±12.01 | 56.18 ±11.46 | 59.17 ±12.54 | 0.004 |
| Male | 448 (82.50%) | 258 (82.69%) | 190 (82.25%) | 0.894 |
| Medical History | ||||
| Angina | 171 (31.49%) | 78 (25.00%) | 93 (40.26%) | < .001 |
| MI | 108 (19.89%) | 32 (10.26%) | 76 (32.90%) | < .001 |
| PCI | 87 (16.02%) | 30 (9.62%) | 57 (24.68%) | < .001 |
| CABG | 20 (3.68%) | 4 (1.28%) | 16 (6.93%) | < .001 |
| Heart failure | 32 (5.89%) | 13 (4.17%) | 19 (8.23%) | 0.047 |
| Stroke | 30 (5.52%) | 13 (4.17%) | 17 (7.36%) | 0.107 |
| Chronic renal failure | 22 (4.05%) | 8 (2.56%) | 14 (6.06%) | 0.041 |
| BMI (kg/m2), mean ±SD | 27.34±4.60 | 26.96±4.04 | 27.85±5.24 | 0.025 |
| Diabetes | 291 (53.59%) | 156 (50.00%) | 135 (58.44%) | 0.051 |
| HTN | 297 (54.70%) | 149 (47.76%) | 148 (64.07%) | <0.001 |
| Hypercholesterolemia | 237 (43.65%) | 124 (39.74%) | 113 (48.92%) | 0.033 |
| Current or ex-smoker | 302 (55.62%) | 183 (58.65%) | 119 (51.52%) | 0.098 |
| Transfer Modalities | ||||
| Transfer by ambulance | 122 (22.47%) | 83 (26.60%) | 39 (16.88%) | 0.007 |
| Transfer by Emergency Medical Service (Red Crescent or Red Cross) | 45 (8.28%) | 29 (9.29%) | 16 (6.92%%) | 0.322 |
| Vital Signs on admission | ||||
| HR>100 bpm | 64 (11.79%) | 44 (14.10%) | 20 (8.66%) | 0.052 |
| SBP<90 mm Hg | 12 (2.21%) | 11 (3.53%) | 1 (0.43%) | 0.015 |
| CHF Killip Class | ||||
| Class I | 450 (82.87%) | 252 (80.77%) | 198 (85.71%) | 0.260 |
| Class II | 64 (11.79%) | 43 (13.78%) | 21 (9.09%) | |
| Class III (Pulmonary edema) | 24 (4.42%) | 13 (4.17%) | 11 (4.76%) | |
| Class IV (Cardiogenic Shock) | 5 (0.92%) | 4 (1.28%) | 1 (0.43%) | |
| Cardiac biomarkers available | ||||
| cTn | 200 (36.83%) | 128 (41.03%) | 72 (31.17%) | 0.019 |
| hs-cTn | 343 (63.17%) | 184 (58.97%) | 159 (68.83%) | |
| BNP | 79 (14.5%) | 41 (13.14%) | 38 (16%) | 0.279 |
| Value) pg/ml), Median (IQR) | 319 (1455) | 80 (390) | 857 (2851) | <0.001 |
| NT-proBNP | 45 (36.29%) | 21 (33.87%) | 24 (38.71%) | |
| value) pg/mL(, Median (IQR) | 442 (3197) | 568 (5414) | 397 (1889) | <0.001 |
| Echocardiography parameters | <0.001 | |||
| Normal LVSD (EF>50%) | 209 (43.91%) | 90 (34.88%) | 119 (54.59%) | |
| Mild LVSD (EF: 40–50%) | 169 (35.50%) | 107 (41.47%) | 62 (28.44%) | |
| Moderate LVSD (EF: 30–40%) | 72 (15.13%) | 46 (17.83%) | 26 (11.93%) | |
| Severe LVSD (EF<30%) | 26 (5.46%) | 15 (5.81%) | 11 (5.05%) | |
| Elective coronary angiogram | 198 (36.46%) | 73 (23.40%) | 125 (54.11%) | <0.001 |
| Elective PCI | 119 (21.91%) | 47 (15.06%) | 72 (31.11%) | <0.001 |
| CABG | 29 (5.34%) | 8 (2.56%) | 21 (9.09%) | <0.001 |
Values are the number of patients (%), unless indicated otherwise. MI: myocardial infarction, AMI: acute MI, PCI: Percutaneous coronary intervention, CABG: Coronary artery bypass surgery, BMI: Body mass index, HTN: hypertension, HR: Heart Rate, SBP: systolic blood pressure, CHF: chronic heart failure; cTn: Cardiac troponin, hs-cTn: High sensitivity cardiac troponin, BNP: B-type natriuretic peptide, NT-proBNP: N-terminal Pro B-type natriuretic peptide, LVSD: left ventricular systolic dysfunction, EF: ejection fraction.