Anything missing with Anemia? - goodman - Printable Version +- USMLE Forum - Largest USMLE Community (https://www.usmleforum.com) +-- Forum: USMLE Forum (https://www.usmleforum.com/forumdisplay.php?fid=1) +--- Forum: Step 1 (https://www.usmleforum.com/forumdisplay.php?fid=2) +--- Thread: Anything missing with Anemia? - goodman (/showthread.php?tid=847513) |
Anything missing with Anemia? - goodman - ArchivalUser - 01-27-2018 You need to connect the dots: TYPE OF ANEMIA Iron Deficiency Anemia of Chronic Disease Sideroblastic Anemia Thalasemia SERUM Fe Low Low High Normal/High TIBC (TRANSFERRIN) High Low Normal/High Normal/High Serum Ferritin Low Normal/High High Normal/High Other * Look for Blood Loss. * May be Normocytic and Lost of Weight * Give Pyridoxine (B6) to see if responsive * Check HbA2, HbF levels. The CBC and The Reticulocyte Count (T.R.C) can divide the anemias in: T.R.C < 2.5 = R.B.C Morphology Anemias. T.R.C > 2.5 = Hemolysis/Hemorrhage Anemias Morphology Anemias we divide according with M.C.V. (Mean Corpuscular Volume): Normal Value 80-100 ųm³. In that way we can have the following Morphology Anemias: Normocytic Normochromic, Micro or Macrocytic. Normocytic Normochromic (Hypoproliferative) can be: 1) Marrow Damage: Infiltration/Fibrosis, Aplasia. 2) Iron Deficiency. 3) Decrease Stimulation: Inflammation, Metabolic Defect, Renal Disease. Micro or Macrocytic Anemias (Maturation Disorder) we have: 1) Cytoplasmic Defects and 2) Nuclear Defects Cytoplasmic Defects examples are: Iron deficency Anemia, Thalasemias, Sideroblastic Anemia. Nuclear Defects examples are: Folate Deficiency, Vit B12 deficiency, Drug Toxicity, Refractory Anemia. Most of Macrocytic Anemias are caused by Processes that interfere with normal DNA synthesis and replication. Hemolysis/Hemorrhage Anemias = Hemolytic Anemias (T.R.C >2.5). Can have different causes, like: Blood Loss, Intravascular Hemolysis Another causes of Hemolytic: Metabolic Defect, Membrane Abnormality, Hemoglobinopathy, Autoimmune Defect, Fragmentation Hemolysis |