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    • Critical Care - A-a Gradient

    A-a Gradient

    Input:
    Age
    Patient Temp
    Elevation
    Percent Inspired O2
    p CO2
    Resp Quot
    p aO2
    Results:
    Expected AaG
    Measured AaG
     
    Decimal Precision:
    ExpectedAaG = 2.5 + (0.21 * Age)
    MeasuredAaG = (FIO2 * (pAtm - pH2O)) - (pCO2 / RespQuot) + (pCO2 * FIO2 * (1 - RespQuot) / RespQuot) - paO2
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