Characteristics of prehospital and in-hospital treated patients, excluding cases of unjustified fibrinolysis
| Prehospital thrombolysis (n=468) | In-hospital thrombolysis (n=264) | p Value | |
|---|---|---|---|
| TIMI, thrombolysis in myocardial infarction. | |||
| Mean age (years) | 63 | 62 | NS |
| Men | 322 (69%) | 190 (72%) | NS |
| Median time to treatment (minutes) | 97 | 153 | <0.05 |
| Mean time to treatment (minutes) | 128 | 183 | NS |
| Maximum time to treatment (minutes) | 305 | 353 | NS |
| Risk factors | |||
| Hypertension | 134/459 (29.2%) | 64/261 (24.2%) | NS |
| Prior myocardial infarction | 73/467 (15.6%) | 29/264 (11.0%) | NS |
| Prior angina | 174/451 (38.6%) | 105/262 (40.1%) | NS |
| Current smoker | 234/438 (53.4%) | 136/261 (52.1%) | NS |
| Diabetes | 41/459 (8.9%) | 29/261 (11.1%) | NS |
| Presentation | |||
| Mean heart rate (beats/min) | 75 | 76 | NS |
| Mean systolic blood pressure (mm Hg) | 128 | 132 | NS |
| Mean TIMI risk score | 2.8 | 2.5 | 0.05 |
| Killip class II–IV | 65 (14%) | 15 (6%) | <0.01 |
| Infarct location | |||
| Anterior | 201 (42.9%) | 117 (44.3%) | NS |
| Inferior | 135 (28.8%) | 78 (29.5%) | NS |
| Inferior + right ventricle | 105 (22.4%) | 60 (22.7%) | NS |
| Other | 27 (5.8%) | 9 (3.4%) | NS |
| Mean sum of ST elevation on ECG (mV) | 1.7 | 1.5 | NS |
| Abortion of myocardial infarction | 80 (17.1%) | 12 (4.5%) | <0.05 |