| 3D | Three Dimensional |
| AF | Atrial Fibrillation |
| AFib | Atrial Fibrillation |
| AIx | Ablation Index |
| AI | Artificial Intelligence |
| AI-ECG | Artificial-Intelligence Electrocardiography |
| APD | Action Potential Duration |
| ARL | Association Rule Learning |
| BPV | Blood-Pressure Variability |
| CABANA | Catheter ABlation vs. ANtiarrhythmic Drug Therapy for Atrial Fibrillation (trial) |
| CDSS | Clinical Decision Support Systems |
| CE | Conformité Européenne |
| CHEERS | Consolidated Health Economic Evaluation Reporting Standards |
| CIED | Cardiac Implantable Electronic Device |
| CMR | Cardiovascular Magnetic Resonance |
| CNN | Convolutional Neural Network |
| CRT | Cardiac Resynchronization Therapy |
| CT | Computed Tomography |
| CV | Conduction Velocity |
| CVAE | Conditional Variational Autoencoder |
| DBSCAN | Density-Based Spatial Clustering of Applications with Noise |
| DL | Deep Learning |
| DPIA | Data Protection Impact Assessment |
| DT | Digital Twin |
| EAM | Electroanatomical Mapping |
| EAT | Epicardial Adipose Tissue |
| ECG | Electrocardiogram |
| ECGi | Electrocardiographic Imaging |
| EGM | Intracardiac Electrogram |
| edge-AI | On-device/edge Artificial Intelligence |
| EHR | Electronic Health Record |
| EU | European Union |
| FDA | Food and Drug Administration |
| FU | Follow Up |
| GCNN | Graph Convolutional Neural Network |
| GDPR | General Data Protection Regulation |
| GMLP | Good Machine Learning Practice |
| HF | Heart Failure |
| HIPAA | Health Insurance Portability and Accountability Act |
| HRV | Heart-Rate Variability |
| ICD | Implantable Cardioverter-Defibrillator |
| ICE | Intracardiac Echocardiography |
| inFAT | CT-derived intramyocardial/epicardial fat marker |
| LA | Left Atrium |
| LGE-CMR | Late Gadolinium Enhancement Cardiac Magnetic Resonance |
| LSI | Lesion Size Index |
| LSR | Least-Squares Regression |
| MDR | Medical Device Regulation |
| MLOps | Machine Learning Operations |
| NN | Neural Network(s) |
| OOD | Out-Of-Distribution |
| PCA | Principal Component Analysis |
| PCCP | Predetermined Change Control Plan |
| PINN | Physics-Informed Neural Network |
| PMA | Premarket Approval |
| PPG | Photoplethysmography |
| PTB-XL | Public ECG dataset “PTB-XL” |
| PTB-XL+ | Extended release of PTB-XL |
| PVI | Pulmonary Vein Isolation |
| RA | Right Atrium |
| RF | Radiofrequency |
| RVI | Reentry Vulnerability Index |
| SaMD | Software as a Medical Device |
| SSI | Systolic Stretch Index |
| t-SNE | t-Distributed Stochastic Neighbor Embedding |
| TinyML | Tiny/embedded Machine Learning |
| U-Net | U-Net convolutional architecture |
| UMAP | Uniform Manifold Approximation and Projection |
| VF | Ventricular Fibrillation |
| VT | Ventricular Tachycardia |
| XAI | Explainable Artificial Intelligence |