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Red flags in ECG suggestive of cardiovascular complications
| Tachycardia at rest |
| Supraventricular or ventricular arrhythmias |
| Ventricular ectopy |
| High-grade atrioventricular blocks |
| Multiple-lead ST elevations |
| T‑wave inversions |
| Pathological Q waves |
| Left bundle branch blocks |
| Low QRS voltage (suggestive of pericardial effusion or myocardial oedema) |
| Signs of right ventricular pressure overload |
