| AHI | Apnea-Hypopnea Index |
| AI | Artificial Intelligence |
| ALP | Alkaline Phosphatase |
| ARF | Acute Respiratory Failure |
| ASV | Adaptive Servo-ventilation |
| BMI | Body Mass Index |
| BiPAP | Bilevel Positive Airway Pressure |
| CCL | Chemokine Ligand |
| CINC | Cytokine-induced Neutrophil Chemoattractant |
| COPD | Chronic Obstructive Pulmonary Disease |
| CPAP | Continuous Positive Airway Pressure |
| CPET | Cardiopulmonary Exercise Testing |
| CPFE | Combined Pulmonary Fibrosis and Emphysema |
| CRP | C-Reactive Protein |
| CSA | Central Sleep Apnea |
| COT | Conventional Oxygen Therapy |
| DLCO | Diffusion capacity for carbon monoxide |
| ER | Endoplasmic Reticulum |
| FVC | Forced Vital Capacity |
| FEV1 | Forced Expiratory Volume in the first second |
| FOSQ | Functional Outcomes of Sleep Questionnaire |
| GERD | Gastroesophageal reflux disease |
| HAA | High-attenuation Areas |
| HFNC | High-flow Nasal Cannula |
| HIF | Hypoxia-inducible Factor |
| IL | Interleukin |
| ILD | Interstitial Lung Disease |
| IPF | Idiopathic Pulmonary Fibrosis |
| LDH | Lactate Dehydrogenase |
| LIX | Lipopolysaccharide-induced CXC chemokine |
| MIG | Monokine Induced by interferon γ |
| MIP | Macrophage Inflammatory Proteins |
| MMP-1 | Matrix Metalloproteinase-1 |
| miRNA | microRNA |
| MV | Mechanical Ventilation |
| NF-κB | Nuclear Factor kappa-light-chain-enhancer of activated B cells |
| NH | Nocturnal Hypoxemia |
| NIV | Non-invasive Ventilation |
| N 1 | stage 1 sleep |
| N2 | stage 2 sleep |
| OSA | Obstructive Sleep Apnea |
| PEEP | Positive end-Expiratory Pressure |
| PI3k-Akt | Phosphatidylinositol 3 Kinase/Protein Kinase B |
| PH | Pulmonary Hypertension |
| PSG | Polysomnography |
| REM | Rapid Eye Movement Sleep |
| QoL | Quality Of Life |
| ROS | Reactive Oxygen Species |
| SBDs | Sleep-related Breathing Disorders |
| SND | Significant Nocturnal Desaturation |
| SSH | Sleep-sustained Hypoxemia |
| TIMP | Tissue Inhibitor of Metalloproteinase |
| TNF | Tumor Necrosis Factor |
| WASO | Wake time After Sleep Onset |