| Sign or symptom | Guidelines | European studya | ||
|---|---|---|---|---|
| PIDS-IDSA | BTSb | WHO | ||
| Tachypnoea | ✓c | ✓ | ✓c | ✓ |
| Chest recession/indrawing/retractions | ✓ | ✓ | ✓ | ✓ |
| Nasal flaring | ✓ | ✓ | ||
| Cough | ✓d | ✓ | ||
| Grunting | ✓ | ✓d | ||
| Apnoea | ✓ | |||
| Fever | ✓ | ✓ | ||
| Difficulty breathing/respiratory distress | ✓ | ✓d | ✓ | |
| Low oxygen saturation | ✓ (<90 %) | ✓ (<92 %) | ✓d
(<90 %) | ✓ (<95 %) |
| Abdominal pain | ✓ | |||
| General danger signs (inability to drink, vomiting, lethargy, convulsions) | ✓d | |||
| Altered mental status | ✓ | |||
| Cyanosis | ✓d | |||
| Auscultation revealing absent breath sounds with a dull percussion note or crackles | ✓ | ✓ | ✓ | |