Hct / 3 = Hb
e.g. if Hct is 15% -> Hb is 5
for every unit transfused, Hb increases by 1 and Hct increases by 3%
e.g. pt w/ 5g of Hb, given 3 units of packed RBCs. The following day Hb is 6g and Hct is 18g. Is this an appropriate response? No, should've been Hb 8 and Hct 24. Pt had GI bleed.
- Most common cause of anemia: Fe deficiency
- Most common cause of Fe def: GI bleed