| Gurd’s criteria for FES: 1 major + 4 minor | |
| Major criteria | Respiratory symptoms plus bilateral signs with positive radiographic changes |
| Central nervous system depression disproportionate to hypoxaemia | |
| Petechial rash | |
| Minor criteria | Tachycardia < 110 bpm Pyrexia Retinal fat or petechiae Urinary fat globules Sudden drop of Hg-level Sudden thrombocytopenia High erythrocyte sedimentation rate Fat globules in sputum |