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The most common electrocardiographic changes of acute right-heart overload/failure
| Sinus tachycardia |
| T-wave inversion in leads V1–V4, III and aVF |
| Incomplete or complete right bundle branch block |
| Cardiac axis tilt >90° |
| S-wave in lead I and Q wave in lead III |
| Atrial fibrillation |
| P pulmonale in leads II and III |
| ST-segment elevation in leads V1–V2 |
Adapted from reference 2
