The three main classes of anemia include excessive blood loss (acutely such as a hemorrhage or chronically through low-volume loss), excessive blood cell destruction (hemolysis) or deficient red blood cell production (ineffective hematopoiesis).
Anemia is the most common disorder of the blood. There are several kinds of anemia, produced by a variety of underlying causes. Anemia can be classified in a variety of ways, based on the morphology of RBCs, underlying etiologic mechanisms, and discernible clinical spectra, to mention a few.
There are two major approaches: the "kinetic" approach which involves evaluating production, destruction and loss, and the "morphologic" approach which groups anemia by red blood cell size. The morphologic approach uses a quickly available and cheap lab test as its starting point (the MCV). On the other hand, focusing early on the question of production may allow the clinician more rapidly to expose cases where multiple causes of anemia coexist.
• 1 Signs and symptoms
• 2 Diagnosis
• 3 Classification
o 3.1 Production vs. destruction or loss
o 3.2 Red blood cell size
3.2.1 Microcytic anemia
3.2.2 Macrocytic anemia
3.2.3 Normocytic anemia
3.2.4 Dimorphic anemia
3.2.5 Heinz body anemia
• 4 Specific anemias
• 5 Possible complications
• 6 Anemia during pregnancy
• 7 Treatments for anemia
o 7.1 Blood transfusions for anemia
o 7.2 Hyperbaric oxygenation
• 8... [continues]
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