102 video review lessons. Review AP US History by watching and listening to over 18 hours worth of videos carefully coordinated to the AP US History syllabus. 290 AP US History practice questions. Test your understanding of each concept without having to take an entire AP US History practice exam. Customized AP US History study plan.
Treatment of iron deficiency is usually easily accomplished with oral iron supplementations. IN rare cases iron needs to be given intravenously, but this route risks serious allergic reactions and is avoided when possible. Lead poisoning is the next most common and one of the most serious causes of microcytic anemia. It needs to be suspected in any young child with microcytic anemia who does not respond quickly to iron supplementation, or who lives in a home with lead pain exposure. This is mostly older homes.
This leads to continuing cell growth without division, which presents as macrocytosis. Megaloblastic anemia has a rather slow onset, especially when compared to that of other anemias. The defect in red cell DNA synthesis is most often due to hypovitaminosis, specifically a deficiency of vitamin B12 and/or folic acid.egaloblastic anemia not due to hypovitaminosis may be caused by antimetabolites that poison DNA production directly, such as some chemotherapeutic or antimicrobial agents (for example azathioprine or trimethoprim).