| Front | Back |
| CPAP | Continuous Positive Airway Pressure |
| FVC | Forced Vital Capacity |
| FEV1 | Forced Expiratory Volume in 1 Second |
| MDI | Metered-Dose Inhaler |
| ETT | Endotracheal Tube |
| HAP | Hospital-Acquired Pneumonia |
| VAP | Ventilator-Associated Pneumonia |
| ABG | Arterial Blood Gas |
| COPD | Chronic Obstructive Pulmonary Disease |
| RSV | Respiratory Syncytial Virus |
| CXR | Chest X-Ray |
| CAP | Community-Acquired Pneumonia |
| ICS | Inhaled Corticosteroids |
| NTM | Nontuberculous Mycobacteria |
| TB | Tuberculosis |
| VC | Vital Capacity |
| ARDS | Acute Respiratory Distress Syndrome |
| PE | Pulmonary Embolism |
| PEEP | Positive End-Expiratory Pressure |
| BiPAP | Bilevel Positive Airway Pressure |
| OSA | Obstructive Sleep Apnea |
| PFT | Pulmonary Function Test |
| SOB | Shortness of Breath |