| CHB | Complete heart block |
| EFE | Endocardial fibroelastosis |
| TV | Tricuspid valve |
| TR | Tricuspid valve regurgitation |
| MR | Mitral valve regurgitation |
| MV | Mitral valve |
| AV | Atrioventricular |
| NL | Neonatal lupus |
| RV | Right ventricle |
| LV | Left ventricle |
| RA | Right atrium |
| LA | Left atrium |
| IVIG | Intravenous immunoglobulin |
| bpm | Beats per minute |
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