Criteria used for a primary PTCA policy in infarct patients initially admitted to the referring hospitals
| Cardiogenic shock | Systolic blood pressure < 90 mm Hg, > 30 minutes despite volume replacement, and clinical signs of hypoperfusion and/or urinary output < 20 ml/h |
| Extensive anterior infarction | ST elevation in > 2 precordial leads of > 2 mm |
| Extensive inferior infarction | Inferior infarction with ST segment depression in precordial leads |
| Inferior infarction with right ventricular involvement | Inferior infarction with ST elevation in right precordial leads |
| Recurrent infarction | Previous Q wave infarction in other locations |
| Contraindication for thrombolysis | Recent major surgery, prolonged mechanical resuscitation, gastrointestinal bleeding |
| Age over 70 years | |
| Diabetes mellitus | |