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Description of the 7 cases.
| Case | Description |
|---|---|
| 1 | Epicardial ventricular pacing |
| 2 | Sinus rhythm |
| 3 | Endocardial ventricular pacing |
| 4 | Epicardial ventricular pacing (near apex) |
| 5 | Endocardial ventricular pacing (near apex) |
| 6 | Pacing on the basis of the pulmonary vein |
| 7 | Pacing on the septum, halfway up to the right ventricle |
