Hematology
Packed Red Blood Cell (PRBC) Transfusion Volume & Unit Calculator
Calculates PRBC volume (mL) for pediatrics and unit counts for adults to achieve target hemoglobin (AABB guidelines).
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Parameters
Packed Red Blood Cell (PRBC) Transfusion Volume & Unit Calculator Result
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Formula
Pediatric Volume (mL) = Weight (kg) × ΔHb (g/dL) × 3.5 mL/kg
Adult: 1 Unit PRBC (~300 mL) raises Hb by ~1.0 g/dL in a 70 kg patientClinical Pearls
Ensures adherence to evidence-based restrictive transfusion thresholds that reduce transfusion-associated circulatory overload (TACO), TRALI, and allogeneic immunomodulation.
Limitations
Ongoing active bleeding rapidly alters post-transfusion Hb increments; dynamic serial CBC checks are mandatory.