Hematology Flashcards
What is best lab used to correct for degree of anemia?
Reticulocyte count
SS of Fe def anemia?
PICA, Angular stomatitis with atrophy of tongue. Spooning of nails–> Koilonychia
When should you see an increased Reticulocyte count in response to Oral Fe therapy?
7-10 days and increase in H/H in 2-3 weeks
What is responsible for Hydrops Fetalis?
Alpha-Thalassemia
Microcytic anemia, Severe anemia with bone changes, Cooper colored skin, Jaundice and hepatosplenomegaly?
Beta-Thalassemia
How do you dx Thalassemia?
Electrophoresis
Heridatry trait of Sideroblastic anemia?
X-Linked Recessive
Mitochondrial defect that prevents the incorporation of iron into Hgb? Iron accumulates in mithochondria around RBC nucleus forming a Ringed….
Sideroblast
What differentiates Vit B12 deficiency from Folate (Vit B9) deficiency?
B12 has Neuro sxms Loss of memory Paresthesia/numbness in extremities Dimished position of vibratory sense Weakness and ataxia
What type of anemia is Folate and Vit B12 def?
Macrocytic with low Reticulocyte count
What is a required cofactor for Folate synthesis?
Vit B12
What is the most common cause of anemia in the chronically ill pt?
AOCD
Labs with AOCD?
- Decreased Reticulocyte count
- Increased ESR
- Decreased serum Iron but with increased serum ferritin
Decreased Haptoglobin with intravascular hemolysis?
Think Hemolytic Anemia
Coomb’s test is used for
Dx of Hemolytic Anemia
Direct Coombs?
Detects antibody on red blood cell surface
Detects IgG, IgM, or C3
Used in eval of Acquired hemolytic anemia
Indirect Coombs?
Detects antibodies in plasma
Used in cross matching of Blood Pro
Schistocytes?
Mechanical distruption of the RBC
Which test is used to diagnose Alpha Thalassemia?
Hemoglobin Electrophoresis
Cold Autontibody?
Usu IgM antibody
Caused by Intravascular hemolysis
Warm autoantibody?
Usu IgG antibody
Due to tumor infection or SLE
Heridatary spherocytosis?
Congenital Hemolytic Anemia
Autosomal Dominant Disorder
—>Splenomegaly and Spherocytes on periphearl smear
G6PD Deficiency?
- Sex Linked disorder
- Usu African/Mediterranean
- Intravascular/Extravascular hemolysis
- Due to stress-induced hemolysis 2 to Sulfa drugs, antimalarials, Vit K, Infxn, or Fava Beans
Pathoneumoic for G6PD deficiency?
Heinz Bodies (Oxidation of Hgb)
Heinz Bodies?
G6PD Defiency
Inheretid disorder resulting in prod of defective Hgb
Defect in position 6 on the beta chain
Very common in Africk Americans?
Sickle Cell Anemia
African American with fatigue, pallor, jaundice, Leg ulcers?
Think Sickle Cell Anemia
What is diagnostic with Sickle Cell?
Hgb Electrophoresis HbS
Hydroxyurea?
Anti-sickling agent
Sickle Cell Trait?
Heterozygotes are carriers
Target Cells on peripheral smear?
Sickle Cell Anemia
Pancytopenia wiht bone marrow hypocellularity?
Aplastic Anemia