Question

Which of the following is not a named sickle cell anemia crisis? A. Aplastic B. Vaso-occlusive C. Splenic sequestration D. Erythropoiesis

Short answer

A. Aplastic Crisis B. Vaso-occlusive Crisis C. Splenic Sequestration Crisis D. Erythropoiesis Answer: D. Erythropoiesis

Step-by-step solution

Introduction to Sickle Cell Anemia

Sickle cell anemia is a genetic blood disorder that affects the shape and function of red blood cells. The altered shape of the red blood cells can lead to a variety of complications, including painful episodes known as "crises."

Identifying a Named Sickle Cell Anemia Crisis

Now let's examine each of the given options to determine if they are named sickle cell anemia crises:

A. Aplastic Crisis

Aplastic crisis is indeed a sickle cell anemia crisis event. It is characterized by a temporary cessation of red blood cell production, usually triggered by a viral infection, causing severe anemia exacerbations.

B. Vaso-occlusive Crisis

Vaso-occlusive crisis is a very common type of sickle cell anemia crisis. It occurs when sickled red blood cells block small blood vessels, impeding blood flow and causing extreme pain, inflammation, and tissue damage.

C. Splenic Sequestration Crisis

Splenic sequestration crisis is another type of crisis that affects sickle cell anemia patients. It happens when a large number of sickled red blood cells get trapped in the spleen, leading to a sudden enlargement of the spleen, rapid decrease in blood counts, and potentially life-threatening complications.

D. Erythropoiesis

Erythropoiesis is not a type of sickle cell anemia crisis. Erythropoiesis, is the process in which red blood cells are produced, typically in the bone marrow. This option does not describe a crisis event related to sickle cell anemia.

Conclusion

After examining each of the options, we can confidently state that Option D, Erythropoiesis, is not a named sickle cell anemia crisis. The other three options - Aplastic, Vaso-occlusive, and Splenic Sequestration - are all examples of named crises associated with this blood disorder.