| AI | Artificial Intelligence |
| BNP-PL | Database of Pulmonary Hypertension in the Polish population |
| CTEPH | Chronic Thromboembolic Pulmonary Hypertension |
| LASSO | Least Absolute Shrinkage and Selection Operator algorithm |
| MCC | Matthews Correlation Coefficient |
| ML | Machine learning |
| PAH | Pulmonary Arterial Hypertension |
| ROC-AUC | The Receiver Operating Characteristic—Area Under the Curve |
| SFE | Sequential Feature Elimination |
| SHAP | Shapley Additive Explanations |
| sPAP | Systolic Pulmonary Arterial Pressure |
| TAPSE | Tricuspid Annular Plane Systolic Excursion |
| XAI | eXplainable Artificial Intelligence |
| XGBoost | eXtreme Gradient Boosting |