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.
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- Kristine said Looks like a naked nucleus to me – and a damaged one, at that. I don’t see any real cyto...
- Christine said What is the large teardrop shaped cell at 2:00? And how did it get that way?
- Kristine said Yes! Exactly! All non-antigen-presenting cells have 6 different types of class II MHC (HLA) molecule...
- daryan said A really helpful and clear explanation. Thank you!
- AMINATU ADAMU said thank u so much for helping me
- Nargis said Thanks a lot.. I am glad that I came across this site of yours
- dr muhammad haroon said Great explanation! Very informative and actually makes sense. Thank you!
- SIMI SADASIVAN said excellent!you teach it as a simple language.more helpful to us.Thank u
- Kristine said So glad you liked it! Thank you!
- Chikaodiri said Wow so simplistic. Thank you Dr. Kristine.
- MMM said Oh boy, I’m so confused with this and your explanation is great! Just now more question: so 6...
- Papa Bear said Thank you so much for clarifying! I really appreciate it!