Table 1.
Baseline characteristics of the study population (n = 7098) according to mode of reperfusion
| Patients* | Primary PCI n = 1419 | Thrombolysis n = 2833 | No reperfusion n = 2846 | |
| Age (years) | 7035 (99.1%) | 60.2 (12.5) | 62.7 (12.4) | 70.5 (12.9)† |
| Women | 6997 (98.6%) | 292 (21.4%) | 650 (23.3%) | 962 (33.9%)† |
| History of CAD | 5106 (71.9%) | 372 (30.0%) | 516 (28.6%) | 933 (45.3%)† |
| Diabetes | 6890 (97.1%) | 230 (16.7%) | 428 (15.6%) | 708 (25.6%)† |
| Hypertension | 6834 (96.3%) | 658 (48.1%) | 1231 (45.0%) | 1532 (56.1%)† |
| Current smoker | 6716 (94.6%) | 681 (51.7%) | 1297 (47.6%) | 865 (32.3%)† |
| Hyperlipidaemia | 6476 (93.3%) | 827 (62.2%) | 1446 (55.3%) | 1208 (47.7%)† |
| Haemodynamic parameters at admission | ||||
| Heart rate (beats/min) | 7046 (99.3%) | 77.1 (19.5) | 76.8 (19.5) | 84.4 (24.7)† |
| Systolic BP (mm Hg) | 7056 (99.4%) | 131.1 (27.3) | 136.0 (26.8) | 135.4 (29.4)† |
| Diastolic BP (mm Hg) | 7034 (99.1%) | 77.6 (17.3) | 80.5 (18.0) | 78.6 (18.8)† |
| Killip class at admission | 6903 (97.3%) | |||
| I | 1119 (80.3%) | 2138 (77.7%) | 1684 (61.1%)† | |
| II | 181 (13.0)% | 491 (17.8%) | 699 (25.4%)† | |
| III | 38 (2.7%) | 79 (2.9%) | 285 (10.3%)† | |
| IV | 56 (4.0%) | 44 (1.6%) | 89 (3.2%)† | |
| Median DSA (hours:minutes) | 6406 (90.3%) | 3:35 | 2:33 | 8:30† |
| ECG at admission | ||||
| ST elevation | 7081 (99.8%) | 1373 (96.8%) | 2802 (99.0%) | 2453 (86.6%)† |
| LBBB | 7046 (99.3%) | 63 (4.5%) | 109 (3.9%) | 536 (18.9%)† |
| Q wave | 7033 (99.1%) | 374 (26.4%) | 904 (32.2%) | 1150 (41.0%)† |
| Out of hospital management | ||||
| CPR | 6907 (97.3%) | 89 (6.4%) | 113 (4.1%) | 191 (6.9%)† |
| DC shock | 6716 (94.6%) | 81 (6.5%) | 97 (3.6%) | 110 (4.0%)† |
Values are number (%) or mean (SD).
*Patients for whom data were available; †p<0.001 across all three groups.
BP, blood pressure; CAD, coronary artery disease, including myocardial infarction, stable angina, ischaemia, angioplasty, and coronary artery bypass; CPR, cardiopulmonary resuscitation; DC, defibrillation/cardioversion; DSA, delay between symptom onset and admission to hospital; LBBB, left bundle branch block; PCI, percutaneous coronary intervention.