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Dilute a RBC?

U81TO
in Transfusion Services

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comment_86703

When you have to dilute a RBC to 200ml with a hematocrit of 35% with 0.9% saline, is there a formula to follow?

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  • applejw
    applejw

    Need more info - what is your starting volume and hematocrit?  Use formula  C1 x V1 = C2 x V2.  DM if you need more  - jeanne.towery@prismahealth.org

  • John C. Staley
    John C. Staley

    I've always used the C1 x V1 = C2 x V2 formula for such calculations.  My question is why do you want a Hct of 35%??

  • Baby Banker
    Baby Banker

    We do this occasionally, but we use plasma instead of saline.  We use the formula mentioned above.  We use RBCs diluted to a specific hematocrit when we have a patient who does not have the blood volu

comment_86713

Need more info - what is your starting volume and hematocrit?  Use formula  C1 x V1 = C2 x V2.  DM if you need more  - jeanne.towery@prismahealth.org

    comment_86716

    I've always used the C1 x V1 = C2 x V2 formula for such calculations.  My question is why do you want a Hct of 35%??

    :coffeecup:

    comment_86739

    We do this occasionally, but we use plasma instead of saline.  We use the formula mentioned above.  We use RBCs diluted to a specific hematocrit when we have a patient who does not have the blood volume to safely prime an apheresis or dialysis circuit.  

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