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  • Title: Whole blood: Total blood product ratio impacts survival in injured children.
    Author: Feeney EV, Morgan KM, Spinella PC, Gaines BA, Leeper CM.
    Journal: J Trauma Acute Care Surg; 2024 Oct 01; 97(4):546-551. PubMed ID: 38685485.
    Abstract:
    BACKGROUND: Some studies in both children and adults have shown a mortality benefit for the use of low titer group O whole blood (LTOWB) compared with component therapy for traumatic resuscitation. Although LTOWB is not widely available at pediatric trauma centers, its use is increasing. We hypothesized that in children who received whole blood after injury, the proportion of whole blood in relation to the total blood product resuscitation volume would impact survival. METHODS: The trauma database from a single academic pediatric Level I trauma center was queried for pediatric (age <18 years) recipients of LTOWB after injury (years 2015-2022). Weight-based blood product (LTOWB, red blood cells, plasma, and platelet) transfusion volumes during the first 24 hours of admission were recorded. The ratio of LTOWB to total transfusion volume was calculated. The primary outcome was in-hospital mortality. Multivariable logistic regression model adjusted for the following variables: age, sex, mechanism of injury, Injury Severity Score, shock index, and Glasgow Coma Scale score. Adjusted odds ratio representing the change in the odds of mortality by a 10% increase in the LTOWB/total transfusion volume ratio was reported. RESULTS: There were 95 pediatric LTOWB recipients included in the analysis, with median (interquartile range [IQR]) age of 10 years (5-14 years), 58% male, median (IQR) Injury Severity Score of 26 (17-35), 25% penetrating mechanism. The median (IQR) volume of LTOWB transfused was 17 mL/kg (15-35 mL/kg). Low titer group O whole blood comprised a median (IQR) of 59% (33-100%) of the total blood product resuscitation. Among patients who received LTOWB, there was a 38% decrease in in-hospital mortality for each 10% increase in the proportion of WB within total transfusion volume ( p < 0.001) after adjusting for age, sex, mechanism of injury, Injury Severity Score, shock index, and Glasgow Coma Scale score. CONCLUSION: Increased proportions of LTOWB within the total blood product resuscitation was independently associated with survival in injured children. Based on existing data that suggests safety and improved outcomes with whole blood, consideration may be given to increasing the use of LTOWB over CT resuscitation in pediatric trauma resuscitation. LEVEL OF EVIDENCE: Therapeutic/Care Management; Level III.
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