Purpose: To calculate the number of packed RBC units to transfuse to a patient.   Citations with documentation. 05.01.01 Sriram & Svirbely 1997
 
conversion to metric enter    
body weight in pounds lbs. equals 77.27 kilograms
body height in inches inches equals 177.8 centimeters
hemoglobin in g/L g/L equals 12 g/dL
 
data enter  
patient's age in years years  
patient's gender (enter M or F) :-):-):-)  
body weight in kilograms kilograms  
body height in centimeters centimeters  
current hemoglobin in g/dL g/dL  
rate of blood loss (enter A if acute, C if chronic) :-):-):-)  
estimated amount of acute blood loss in mL mL  
Is the default target Hgb of 10 g/dL OK? (Y or N) :-):-):-)  
desired target hemoglobin in g/dL g/dL  
Is the default blood product hematocrit of 60% OK? (Y or N) :-):-):-)  
:-):-):-) :-):-):-)  
Is the default blood product volume of 330 mL OK? (Y or N) :-):-):-)  
:-):-):-) :-):-):-)  
How many red cell products have been given in the last 24 hours? :-):-):-)  
How many platelet products have been given in the last 24 hours? :-):-):-)  
How many units of FFP have been given in the last 24 hours? :-):-):-)  
Is the patient at risk for fluid overload (congestive heart failure, acute MI, etc.)? (Y or N) :-):-):-)  
 
calculated results  
data complete? Yes  
body surface area 1.95 sq meters  
patient grouping adults  
estimated normal blood volume in mL      
• by BSA, method 1 5,181 mL  
• by BSA, method 2 5,339 mL  
• by body weight 5,082 mL  
• by height and weight 5,152 mL  
 
Quick Estimate  
units RBC needed 6 units  
volume administered 1,560 mL  
 
Exact Estimate  
target hemoglobin 12 g/dL  
estimated blood volume of patient before transfusion 4,181 mL  
hemoglobin of blood product 20 g/dL  
volume of blood product 330 mL  
number of units required 8.0 units  
volume administered 2,080 mL  
 
Recommendations  
Patient has undergone massive transfusion.  
Patient requires platelet transfusions.  
Patient requires FFP.  
Split blood products before release.  
Monitor patient for fluid overload.  
 

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