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.
Tagsacute leukemia acute lymphoblastic leukemia acute myeloid leukemia acute promyelocytic leukemia Add new tag anemia b cells blood smear bone marrow brain tumors carcinoma cases chronic myelofibrosis chronic myeloid leukemia chronic myeloproliferative disorders coagulation cortisol cytochemistry cytogenetics essential thrombocythemia heart hemophilia immunology infection inflammation kaplan kidney laboratory tests lymphocyte lymphocytes lymphoma macrophages neoplasia neutrophil normal photoblog polycythemia vera red blood cells red cells sickle cell anemia skin squamous cell carcinoma stains student questions t cells
- maram said thanks for the review
- Mohini Jayant Dave said I usually first write down what I have to say and then makes slides of valid points which I may forg...
- Chimezie Okwuonu said Good explanation. Quite clear. Am impressed
- aamir hasnain said thanx very clear and concise
- Dr. Abdul Karim Affouni said Super thanx for such friendly informative description.
- PASCUAL OC said MUCHAS GRACIAS, TODO SEA EN PRO DE LA CIENCIA!
- maram said thank you for the help
- Muthuselvi said Very good information !!!!!thanks a lot …..
- alem teka said thank you v/much
- usama said thanks soooooo much
- vidya said In APLA syndrome where there is not much chance for clotting how does thrombosis occur???( thrombosi...
- jumana haque said Tooooooo gooooood