Mortality risk score for very low birthweight infants obtainable at admission to neonatal intensive care
| Variable | Range/grade | Category | Score |
|---|---|---|---|
| Birthweight (g) | 1250–1499 | 4 | 3 |
| 1000–1249 | 3 | 6 | |
| 750–999 | 2 | 9 | |
| < 750 | 1 | 12 | |
| Grade of respiratory distress syndrome | 0 | 0 | 0 |
| I | 1 | 2 | |
| II | 2 | 4 | |
| III | 3 | 6 | |
| IV | 4 | 8 | |
| Apgar score at 5 minutes | > 8 | 5 | 0 |
| 7 to 8 | 4 | 2 | |
| 5 to 6 | 3 | 4 | |
| 3 to 4 | 2 | 6 | |
| < 3 | 1 | 8 | |
| Artificial ventilation | No | 0 | 0 |
| Yes | 4 | 8 | |
| Base excess at admission (mmol/l) | ⩾ −2.0 | 1 | 0 |
| −2.1 to −5.0 | 2 | 1 | |
| −5.1 to −8.0 | 3 | 2 | |
| −8.1 to −10.0 | 4 | 3 | |
| < −10 | 5 | 4 | |
| Score maximum | 40 |