Guidelines according to birth weight for exchange transfusion in low birthweight infants based on total serum bilirubin (mg/dl) and bilirubin/albumin ratio (mg/g) (whichever comes first)35
| <1250 g | 1250–1499 g | 1500–1999 g | 2000–2499 g | |
|---|---|---|---|---|
| *Risk factors: Apgar <3 at five minutes; Pao2 <40 mm Hg ⩾2 h; pH ⩽7.15 ⩾1 h; birth weight <1000 g; haemolysis; clinical or central nervous system deterioration; total protein ⩽4 g/dl or albumin ⩽2.5 g/dl. B/A ratio, Bilirubin/albumin ratio. | ||||
| Standard risk | ||||
| Total bilirubin | 13 | 15 | 17 | 18 |
| B/A ratio | 5.2 | 6.0 | 6.8 | 7.2 |
| High risk* | ||||
| Total bilirubin | 10 | 13 | 15 | 17 |
| B/A ratio | 4.0 | 5.2 | 6.0 | 6.8 |