Placental Blood Transfusion: Uses in Neonates & Fetal Therapy

What Is Placental Blood?

Blood remaining in the placenta and umbilical cord after delivery (~80–150 mL). Rich in red cells, stem cells, platelets, immune cells. Historically discarded; now recognized as a valuable autologous/allogeneic resource.

Clinical Applications

1. Delayed Cord Clamping (DCC) – Standard of Care

• Wait 30–60+ seconds (or until cord stops pulsing) before clamping.
• Transfuses ~30–50 mL/kg placental blood to newborn.
• Benefits: ↑ hemoglobin/iron stores at 6 mo, ↓ anemia, ↑ neurodevelopment (preterm), ↑ stem cells. No ↑ maternal hemorrhage risk.
• Recommended by ACOG, AAP, WHO for vigorous term/preterm infants.

2. Umbilical Cord Milking (UCM)

• Manual stripping of cord toward infant (2–4x) if immediate resuscitation needed.
• Faster than DCC; similar benefits in preterm. Caution in <28 weeks (IVH risk).

3. Cord Blood Banking

• Public donation: HLA-typed, stored for unrelated transplant (leukemia, lymphoma, hemoglobinopathies, immunodeficiencies).
• Private banking: Autologous/family use; controversial cost-benefit for low-probability need.

4. Intrauterine Transfusion (IUT)

• For fetal anemia (alloimmunization, parvovirus B19).
• Donor blood (O-negative, CMV-negative, irradiated) transfused into umbilical vein under ultrasound.
• Placental blood not used as donor source for IUT (maternal/fetal compatibility issues).

5. Neonatal Transfusion (Ex Utero)

• Collected placental blood can be processed (RBC concentrate) for autologous transfusion to the same newborn if anemic/thrombocytopenic.
• Rare; usually donor blood preferred (screened, typed, readily available).

Safety & Processing

• Strict aseptic collection, microbial testing, volume/hematocrit measurement.
• ABO/Rh typing, infectious disease screening (if allogeneic).
• Volume overload risk in small neonates – calculate mL/kg.

Ethical & Regulatory

• Informed consent for banking.
• DCC is standard care, not "experimental."
• Equitable access to public banking.

Placental blood is a physiological endowment; optimizing its transfer at birth is a simple, powerful intervention.