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Post-transfusion white cell count in the sick preterm neonate
1Neonatal Intensive Care Unit, John Hunter Children's Hospital, New South Wales, Australia. iwright@mail.newcastle.edu.au
Journal of Paediatrics and Child Health
|February 13, 2001
Summary
Post-transfusion leucocytosis, a rise in white blood cells after blood transfusions, occurs mildly in sick preterm neonates. This physiological response is unlikely to significantly impact sepsis diagnosis in this vulnerable population.
Area of Science:
- Neonatal Intensive Care
- Hematology
- Pediatric Sepsis Diagnosis
Background:
- Post-transfusion leucocytosis can confound sepsis diagnosis in adults.
- The effect of blood transfusions on white blood cell counts in neonates is not well-established.
- Accurate sepsis diagnosis is critical in sick preterm infants.
Purpose of the Study:
- To determine if post-transfusion leucocytosis occurs in sick preterm neonates.
- To assess if this phenomenon alters neonatal infection indices.
- To evaluate the impact on sepsis diagnosis in this population.
Main Methods:
- Prospective data collection of transfusion and full blood count data.
- Study conducted in a level 3 neonatal intensive care unit.
- Data analyzed over a 3-month period.
Main Results:
- 114 transfusion events in 37 infants were recorded.
- Median white blood cell count increased by 0.9 x 10^9/L within 8 hours post-transfusion (P=0.032).
- Median neutrophil count increased by 0.4 x 10^9/L, and neutrophil left shift decreased by 1.2% post-transfusion.
Conclusions:
- A mild increase in white blood cells following transfusion is observed in sick neonates.
- The magnitude of this physiological response is unlikely to interfere with sepsis diagnosis.
- Further research may explore the clinical significance of these hematological changes.