All of the following are true regarding hemolytic anemia except: March 2008 and 2011, March 2013
**Core Concept**
Hemolytic anemia is characterized by the premature destruction of red blood cells (RBCs), leading to anemia and potentially life-threatening complications. This condition can result from various factors, including genetic disorders, autoimmune diseases, and exposure to toxins.
**Why the Correct Answer is Right**
Hemolytic anemia can be classified based on the underlying cause and the location of red blood cell destruction. The main types include intravascular hemolysis, where red blood cells are destroyed within the blood vessels, and extravascular hemolysis, where red blood cells are destroyed in the spleen. The spleen plays a crucial role in filtering the blood and removing old or damaged red blood cells. In conditions like hereditary spherocytosis, the spleen recognizes and destroys red blood cells due to their abnormal shape.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it contradicts the fact that hemolytic anemia can result from various genetic disorders, including hereditary spherocytosis, which affects the red blood cell membrane.
**Option B:** This option is incorrect because it is not a characteristic of hemolytic anemia, which is primarily associated with the destruction of red blood cells rather than the production of new ones.
**Option C:** This option is incorrect because it is not a specific type of hemolytic anemia, and the term "extravascular hemolysis" already encompasses conditions where red blood cells are destroyed outside the blood vessels.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that hemolytic anemia can be caused by both intrinsic (within the red blood cell) and extrinsic (outside the red blood cell) factors, and understanding the underlying cause is crucial for effective management and treatment.
**Correct Answer: A**.