Effect of red blood cell storage time in pediatric cardiac surgery patients: A subgroup analysis of a randomized

Sophie M Martin1, Marisa Tucci1, Philip C Spinella2

  • 1Division of Pediatric Critical Care Medicine, Department of Pediatrics, Sainte Justine and Montreal Heart Institute, University of Montreal, Montreal, Québec, Canada.

JTCVS Open
|October 9, 2023
PubMed

Insights

Fresh red blood cell (RBC) transfusions did not reduce multiple organ dysfunction syndrome in pediatric cardiac surgery patients. Further research is needed to confirm findings on RBC storage and patient outcomes.

Area of Science:

  • Pediatric critical care medicine
  • Transfusion medicine
  • Cardiovascular surgery

Background:

  • Multiple organ dysfunction syndrome (MODS) is a significant complication in pediatric patients undergoing cardiac surgery.
  • The storage duration of red blood cells (RBCs) may influence post-transfusion outcomes.
  • Optimizing RBC transfusion strategies is crucial for improving patient recovery after complex surgical procedures.

Purpose of the Study:

  • To investigate whether transfusing fresh red blood cells (RBCs) reduces the incidence of new or progressive multiple organ dysfunction syndrome (MODS) in pediatric patients undergoing cardiac surgery compared to standard-issue RBCs.
  • To analyze secondary outcomes from the Age of Blood in Children in Pediatric Intensive Care Unit (PICU) trial.

Main Methods:

  • A preplanned secondary analysis of an international randomized controlled trial involving pediatric patients after cardiac surgery with cardiopulmonary bypass.
  • Patients were randomized to receive either fresh (stored ≤7 days) or standard-issue RBCs.
  • The primary outcome was new or progressive MODS, assessed up to 28 days post-randomization, at PICU discharge, or death.

Main Results:

  • A total of 178 patients were included, with 89 in the fresh RBCs group (median storage: 5 days) and 89 in the standard-issue RBCs group (median storage: 18 days).
  • No statistically significant difference in new or progressive MODS was observed between the fresh RBCs group (48.3%) and the standard-issue RBCs group (43.2%).
  • The relative risk for MODS was 1.12 (95% CI, 0.81 to 1.54; P = .49).

Conclusions:

  • In neonates and children undergoing cardiac surgery, fresh RBC transfusions did not decrease the incidence of new or progressive MODS compared to standard-issue RBCs.
  • The findings suggest that RBC storage duration may not be a significant factor in MODS development in this population.
  • A larger clinical trial is recommended to validate these findings and further explore the impact of RBC storage age on pediatric patient outcomes.
Abstract