| Neonates | Children | Adults |
| Respiratory distress syndrome Birth asphyxia Sepsis Apnoea Hypoventilation | Pneumonia Meningitis Acute asthma Acute sepsis Severe malaria | Chronic obstructive pulmonary disease Acute asthma Pneumonia Sepsis Shock Major trauma Anaphylaxis Acute heart failure Pulmonary embolism Pleural effusion Pneumothorax Lung fibrosis Carbon monoxide poisoning Obstetric and surgical emergencies Sickle cell crises |