Patterns of paediatric massive blood transfusion protocol use in trauma and non-trauma patients.

BACKGROUND Massive blood transfusion is infrequently required by children but can be a lifesaving intervention for haemorrhage or coagulopathy. Product volumes and ratios administered during the initiation of paediatric massive blood transfusion protocol (MBTP) are highly variable and the optimal component ratio is unknown. METHODS/MATERIALS We performed a single-centre retrospective chart review of patients (<20 years) who received MBTP activation from August 2012 through January 2018. Logistic regression was used to determine the association between MBTP use characteristics (including blood product type and volume transfused, extracorporeal membrane oxygenation [ECMO] support, and cardiac arrest occurrence) and 24-h mortality. "Low" product ratio was defined as a ratio of plasma or platelets to red blood cells (RBCs) of <1:2 and "high" as ≥1:2. RESULTS Ninety-eight MBTPs were activated for 89 patients (range 1-4 per patient). The most common underlying diagnoses were congenital heart disease (CHD, n = 28, 31.5%), followed by cardiopulmonary disease, and trauma. CHD patients required the greatest volume of RBCs (226.3 ml/kg, 95%CI [160.0, 292.7], p = 0.002) and platelets (46.7 ml/kg, 95%CI [33.2, 60.2], p < 0.001). A "low" product ratio was more common for the MBTP, with its incidence similar among the underlying diagnoses. CONCLUSION An MBTP developed for trauma patients can be applied to non-trauma patients but standard MBTP components may not be optimal for all children. These findings show that underlying patient diagnoses may be a factor when designing an MBTP for a heterogeneous paediatric population.