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JOURNAL ARTICLE
META-ANALYSIS
REVIEW
Does a balanced transfusion ratio of plasma to packed red blood cells improve outcomes in both trauma and surgical patients? A meta-analysis of randomized controlled trials and observational studies.
American Journal of Surgery 2018 August
BACKGROUND: The effect of high transfusion ratios of fresh frozen plasma (FFP): packed red blood cell (RBC) on mortality is still controversial. Observational evidence contradicts a recent randomized controlled trial regarding mortality benefit. This is an updated meta-analysis, including a non-trauma cohort.
METHODS: Patients were grouped into high vs. low based on FFP:RBC ratio. Primary outcomes were 24-h and 30-day/in-hospital mortality. Secondary outcomes were acute respiratory distress syndrome and acute lung injury rates. Random model and leave-one-out-analyses were used.
RESULTS: In 36 studies, lower ratio showed poorer 24-h and 30-day survival (p < 0.001). In trauma and non-trauma settings, a lower ratio was associated with worse 24-h and 30-day mortality (P < 0.001). A ratio of 1:1.5 provided the largest 24-h and 30-day survival benefit (p < 0.001). The ratio was not associated with ARDS or ALI.
CONCLUSIONS: High FFP:RBC ratio confers survival benefits in trauma and non-trauma settings, with the highest survival benefit at 1:1.5.
METHODS: Patients were grouped into high vs. low based on FFP:RBC ratio. Primary outcomes were 24-h and 30-day/in-hospital mortality. Secondary outcomes were acute respiratory distress syndrome and acute lung injury rates. Random model and leave-one-out-analyses were used.
RESULTS: In 36 studies, lower ratio showed poorer 24-h and 30-day survival (p < 0.001). In trauma and non-trauma settings, a lower ratio was associated with worse 24-h and 30-day mortality (P < 0.001). A ratio of 1:1.5 provided the largest 24-h and 30-day survival benefit (p < 0.001). The ratio was not associated with ARDS or ALI.
CONCLUSIONS: High FFP:RBC ratio confers survival benefits in trauma and non-trauma settings, with the highest survival benefit at 1:1.5.
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