Pediatric Blood Transfusion – Quick ED Guide
Use this calculator to estimate packed red cell transfusion volume in children. Always follow your local transfusion policy and discuss complex or critically ill cases with a senior.
Interactive Transfusion Calculator
Enter the child’s weight and desired haemoglobin (Hb) rise.
Formula used:
Volume (mL) ≈ 4 × weight (kg) × desired Hb rise (g/dL)
Many centres also use a standard dose of 10–15 mL/kg packed red cells.
Always confirm recommended volumes and transfusion rates with your local policy.
Approximate Volumes by Weight
Quick reference for common weights using 10 mL/kg and 15 mL/kg doses.
| Weight (kg) | 10 mL/kg PRBC (mL) | 15 mL/kg PRBC (mL) |
|---|---|---|
| 5 kg | 50 mL | 75 mL |
| 10 kg | 100 mL | 150 mL |
| 15 kg | 150 mL | 225 mL |
| 20 kg | 200 mL | 300 mL |
| 25 kg | 250 mL | 375 mL |
| 30 kg | 300 mL | 450 mL |
These are approximations only. Adjust for chronic vs acute anaemia, cardiac status, and any maximum volume limits in your unit.
Key Safety Checks
- Confirm correct patient identity and blood product at the bedside (two staff members).
- Check indication, recent Hb, and document baseline observations.
- Monitor vitals regularly (e.g. at 15 minutes, then at least hourly or per protocol).
- Watch for transfusion reactions: fever, rash, rigors, dyspnoea, hypotension, back or chest pain.
- Stop transfusion immediately and follow the reaction protocol if any adverse features occur.