| CIEDs | Cardiac implantable electronic devices |
| CRT-D | Cardiac resynchronization therapy with deffibrilation therapy |
| EF | Ejection fraction |
| LBBAP | Left bundle branch area pacing |
| HPB | His bundle pacing |
| TEE | Trans-esophageal echo-cardiograph |
| RA | Right atrium |
| RV | Right ventricle |
| SVC | Superior vena cava |
| VVI | Unicameral pacemaker |
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