90 Higher Initial Formula for Resuscitation After Severe Burn Injury Means Higher 24-Hour Volumes

INTRODUCTION: Initial fluid infusion rates for resuscitation of burn injuries typically use formulas based on patient weight and total body surface area (TBSA) burned. However, the impact of this rate on overall resuscitation volumes and outcomes have not been extensively studied. The purpose of this study was to determine the impact of initial fluid rates on 24 hour volumes and outcomes using the Burn Navigator (BN). METHODS: The BN database is composed of 300 patients with > 20% TBSA, >40kg that were resuscitated utilizing the BN. Four study arms were analyzed based on the initial formula – 2ml/kg/TBSA, 3 ml/kg/TBSA, 4 ml/kg/TBSA or the Rule of Ten. Total fluids infused at 24 hours after admission were compared as well as resuscitation-related outcomes. RESULTS: A total of 296 patients were eligible for analysis. Higher starting rates (4 ml/kg/TBSA) resulted in significantly higher volumes at 24 hours (5.2 + 2.2 ml/kg/TBSA) than lower rates (2 ml/kg/TBSA resulted in 3.9 + 1.4 ml/kg/TBSA). No shock was observed in the high resuscitation cohort, whereas the lowest starting rate exhibited a 12% incidence, lower than both the Rule of Ten and 3 ml/kg/TBSA arms. There was no difference in 7-day mortality across groups. CONCLUSIONS: Higher initial fluid rates resulted in higher 24-hour fluid volumes. The choice of 2ml/kg/TBSA as initial rate did not result in increased mortality or more complications. An initial rate of 2ml/kg/TBSA is a safe strategy. APPLICABILITY OF RESEARCH TO PRACTICE: Utilizing a lower starting fluid rate is a safe strategy and should considered after severe burn injury.