ABC score for massive transfusion
Predicts the need for massive transfusion in trauma patients.
Research authors: Nunez TC, Voskresensky IV, Dossett LA, Shinall R, Dutton WD, Cotton BA.
Details Formula Study characteristics Files & References
Model author
Model ID
Revision date
MeSH terms
  • Blood Cells
  • Blood Transfusion
  • Multiple Trauma
  • Polytrauma
  • Trauma
  • Model type
    Linear model (Calculation)
    No Formula defined yet
    Condition Formula

    Additional information

    The purpose of this study was to validate previously described massive transfusion scoring systems and compare these to a simplified non-laboratory dependent scoring system (Assessment of Blood Consumption [ABC] score). The study population consisted of a retrospective cohort of all level I adult trauma patients transported directly from the scene (July 2005 to June 2006). Trauma-Associated Severe Hemorrhage (TASH) and McLaughlin scores calculated according to published methods.

    Study Population

    Total population size: 586
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    Females: {{ model.numberOfFemales }}

    Continuous characteristics

    Name Mean SD Unit
    Age no massive transfusion 48 24 years
    Age massive transfusion 40 18 Years
    Emergency department systolic blood pressures no massive transfusion 121 33 mmHg
    Emergency department systolic blood pressures massive transfusion 89 34 mmHg
    Emergency department heart rate no massive transfusion 95 26 beats/min
    Emergency department heart rate massive transfusion 111 28 beats/min
    Emergency department Glasgow Coma Scale no massive transfusion 11.5 5.1 points
    Emergency department Glasgow Coma Scale massive transfusion 9.0 5.5 points
    Trauma associated severity of hemorrhage no massive transfusion 6.3 4.4 points
    Trauma associated severity of hemorrhage massive transfusion 13.4 5.6 points
    Name LL Q1 Median Q3 UL Unit
    Injury severity scores no massive transfusion 22 points
    Injury severity scores massive transfusion 34 points

    Categorical characteristics

    Name Subset / Group Nr. of patients
    Number of subjects No massive transfusion 510
    Massive transfusion 76
    Sex - number of males No massive transfusion 357
    Massive transfusion 54
    Blunt mechanism No massive transfusion 432
    Massive transfusion 53
    Mortality No massive transfusion 75
    Massive transfusion 33
    ABC score for massive transfusion
    Refer to Intended Use for instructions before use
    Evidencio B.V., Irenesingel 19, 7481 GJ, Haaksbergen, the Netherlands

    ABC score for massive transfusion:

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    ABC score for massive transfusion: points

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    Outcome stratification

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    Result interpretation

    In the ABC Score studies, scores 2 or more were likely to require massive transfusion (10 units or more of packed red blood cells), with sensitivity and specificity ranging from 75% to 90% and 67% to 88%, respectively at multiple trauma centers.

    Note: the ABC Score does not indicate if trauma patients should receive blood, only if they should receive blood through a massive transfusion protocol.

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    Calculations alone should never dictate patient care, and are no substitute for professional judgement. See our full disclaimer.

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