Q. Immediately after an acute episode of blood loss – following a motor vehicle accident, for example – the hemoglobin level is normal. Why is that? Are the other red cell indices normal too?
A. Immediately after acute blood loss, all the laboratory red cell indices are normal! The hemoglobin, RDW, RBC, MCH, and the MCHC are all normal. Because really, although the patient has lost blood (and therefore is in trouble because he/she has fewer red cells to transport oxygen through the body), the blood that’s examined in the laboratory appears totally normal! It has the same number of red cells per unit volume, and the red cells themselves are perfectly normal (assuming the patient’s blood was normal to begin with). This is because during acute blood loss, you’re losing red cells but also the plasma that goes along with them. So the blood remaining in the patient is totally normal – it’s just that there isn’t enough of it.
- Kristine said Thanks, Meghan – I agree! It should be a primary concern, not an afterthought, and we need to...
- Meghan J said Thank you for this post. It’s a topic that is often added as an afterthought to medical schoo...
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- sumayya roohi said mantle cell lymphoma is CD 5+.CD 23-, CD 79b+, FMC7 and cyclin D1 +
- Kristine said I would presume so – at least as long as it remained in the blood.
- Kristine said “Open” chromatin means that you can see through the chromatin – it appears fine, l...
- Kristine said Thanks, Julia!! So glad you found it and it was helpful
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- Amanulla said And Macrocyte + Hypersegmented neutrophil=Megaloblastic anemia