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Pre-transfusion platelet counts and bleeding in very low birth weight infants

Elizabeth F Stone1, Rebecca Birch2, Jeanne E Hendrickson3,4

  • 1Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, USA. es2024@cumc.columbia.edu.

Journal of Perinatology : Official Journal of the California Perinatal Association
|July 27, 2026
PubMed

Insights

Platelet transfusion thresholds for premature infants are similar regardless of bleeding status. However, very premature infants with severe intraventricular hemorrhage had higher pre-transfusion platelet counts.

Area of Science:

  • Neonatal Medicine
  • Hematology
  • Pediatric Critical Care

Background:

  • Platelet transfusion thresholds for very low birth weight (VLBW) infants (<1500g) lack standardization.
  • The impact of bleeding on optimal platelet transfusion strategies in VLBW infants remains unclear.

Purpose of the Study:

  • To investigate the relationship between bleeding and pre-transfusion platelet counts in VLBW infants.
  • To determine if bleeding influences the platelet counts required for transfusion in this vulnerable population.

Main Methods:

  • An observational birth cohort study included 210 VLBW infants requiring platelet transfusions within 3 weeks of birth.
  • Mixed-effects linear regression models analyzed pre-transfusion platelet counts in infants with and without bleeding, including specific analysis for severe intraventricular hemorrhage (IVH).

Main Results:

  • Most transfused VLBW infants (76%) experienced bleeding, with IVH being the most common type (61%).
  • No significant difference in pre-transfusion platelet counts was observed between infants with and without bleeding diagnoses (56.3 vs 58.5 × 10³ /µL).
  • Infants with severe IVH exhibited higher pre-transfusion platelet counts (68.9 × 10³ /µL) compared to the overall cohort (53.5 × 10³ /µL).

Conclusions:

  • Pre-transfusion platelet counts do not differ significantly between VLBW infants with or without bleeding diagnoses.
  • Severe intraventricular hemorrhage is associated with higher pre-transfusion platelet counts in VLBW infants, suggesting potential differences in transfusion needs.
Abstract

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