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The normal mean corpuscular volume (abbreviated to MCV on full blood count results, and also known as mean cell volume) is approximately 80–100 fL. When the MCV is <80 fL, the red cells are described as microcytic and when >100 fL, macrocytic (the latter occurs in macrocytic anemia). The MCV is the average red blood cell size.
The normochromic cells have a normal concentration of haemoglobin, and are therefore 'red enough' while the hypochromic cells do not; thus the value of the mean corpuscular hemoglobin concentration.The most common cause of microcytosis is iron deficiency anemia. Every time Hb synthesis being impaired in bone marrow microcytosis can occurs such ...
Mixed-deficiency (iron + B 12 or folate) anemia usually presents with high RDW and variable MCV. Recent hemorrhages typically present with high RDW and normal MCV. A false high RDW reading can occur if EDTA anticoagulated blood is used instead of citrated blood. See Pseudothrombocytopenia. By severity, elevated RDW can be classified as follows:
The most common causes of this kind of anemia are iron deficiency and thalassemia. Hypochromic anemia was historically known as chlorosis or green sickness for the distinct skin tinge sometimes present in patients, in addition to more general symptoms such as a lack of energy, shortness of breath, dyspepsia , headaches , a capricious or scanty ...
The mean corpuscular volume or MCV is usually normal or low for congenital causes of sideroblastic anemia but normal or high for acquired forms. With lead poisoning, see coarse basophilic stippling of red blood cells on peripheral blood smear; Specific test: Prussian blue stain of RBC in marrow shows ringed sideroblasts.
A high reticulocyte count signifies that bone marrow processes are normal. A low reticulocyte count would signify there is a problem at the level of the bone marrow, which produce the stem cells . Acute blood loss would result in a high reticulocyte count, as bone marrow processes are normal and the bone marrow responds accordingly to the body ...
Signs and symptoms [ edit ] In diseases such as hemolytic uremic syndrome , disseminated intravascular coagulation , thrombotic thrombocytopenic purpura , and malignant hypertension, the endothelial layer of small vessels is damaged with resulting fibrin deposition and platelet aggregation.
Macrocytic anemia is a class of anemia characterized by the presence of predominantly larger-than-normal red blood cells (RBC, also known as erythrocytes) accompanied by low numbers of RBC and often also with insufficient hemoglobin content per cell. Macrocytic anemia occurs when – despite the larger cell size – such factors result in ...