Find a better trigger for transfusion threshold. Hgb mass loss vs. qBL vs. EBL are all various ways of getting at how much blood was lost, but why do we even care? Is that even useful information? How much Hgb do you need? Is Hgb concentration even the right thing to measure for a transfusion threshold? What you really want to know is whether they lost so much blood that they require a transfusion to provide adequate tissue oxygenation. Are there other reasons to care? Is there an early marker of tissue hypoxia that would make a better laboratory marker for determining need for blood transfusion? | Find a better trigger for transfusion threshold. Hgb mass loss vs. qBL vs. EBL are all various ways of getting at how much blood was lost, but why do we even care? Is that even useful information? How much Hgb do you need? Is Hgb concentration even the right thing to measure for a transfusion threshold? What you really want to know is whether they lost so much blood that they require a transfusion to provide adequate tissue oxygenation. Are there other reasons to care? Is there an early marker of tissue hypoxia that would make a better laboratory marker for determining need for blood transfusion? |