Which RBC fragment is associated with microangiopathic hemolytic anemia?

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Multiple Choice

Which RBC fragment is associated with microangiopathic hemolytic anemia?

In microangiopathic hemolytic anemia, red blood cells are mechanically damaged as they pass through occluded or damaged small vessels, creating fragmented cells on the smear. The fragment most characteristic of this process is the schistocyte, a helmet-shaped red blood cell fragment that results from shear stress in the microvasculature. Other shapes reflect different conditions: target cells appear in liver disease and certain hemoglobinopathies; drepanocytes (sickle cells) occur in sickle cell disease; elliptocytes are seen in hereditary elliptocytosis and some other disorders. But the presence of schistocytes specifically points to MAHA and the rapid destruction of RBCs by microvascular pathology.

In microangiopathic hemolytic anemia, red blood cells are mechanically damaged as they pass through occluded or damaged small vessels, creating fragmented cells on the smear. The fragment most characteristic of this process is the schistocyte, a helmet-shaped red blood cell fragment that results from shear stress in the microvasculature.

Other shapes reflect different conditions: target cells appear in liver disease and certain hemoglobinopathies; drepanocytes (sickle cells) occur in sickle cell disease; elliptocytes are seen in hereditary elliptocytosis and some other disorders. But the presence of schistocytes specifically points to MAHA and the rapid destruction of RBCs by microvascular pathology.

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