Red Blood Cells And Bleeding Disorders Flashcards
Average content (mass) of hemoglobin per red cell expressed in picograms
Mean Cell Hemoglobin
Average volume of a red cell expressed in femtoliters
Mean Cell Volume
Average concentration of hemoglobin in a given volume of packed red cells expressed in grams per deciliter
Mean Cell Hemoglobin Concentration
Coefficient of variation of red cell volume
Red Cell Distribution Width
Inc RDW
Dec RDW
Iron deficiency
Thalassemia
Hemolytic Anemias
Hereditary spherocytosis G6PD deficiency Sickle cell anemia Thalassemia Autoimmune HA Microangiopathic HA Macroangiopathic HA
Mutations of ankyrin, spectrin, band 3 and band 4.2
Hereditary spherocytosis
Hemolytic anemia
Aplastic crisis
Hemolytic crisis
Parvovirus B19
EBV mononucleosis
Small dark nuclear remnants present in RBCs of asplenic patients
Howell Jolly bodies
Hereditary spherocytosis
Symptoms of extravascular hemolysis
Anemia
Splenomegaly
Jaundice
Symptoms of intravascular hemolysis
Anemia Hemoglobinemia Hemoglobinuria Hemosiderinuria Jaundice
Episodic hemolysis
G6PD deficiency
Triggers of G6PD deficiency
INFECTIONS
Drugs antimalarials sulfonamides
Fava beans
Membrane bound precipitates on denatured globin chains
Heinz bodies
G6PD def
RBCs with damaged membranes removed by splenic macrophages
Bite cells
Recovery phase of G6PD deficiency heralded by
Reticulocytosis
6th codon of B globin: glu to val
Sickle cell anemia
RBCs shaped like curved blades
Sickled cells
Sickle cell anemia
Reticulocytosis
Howell Jolly bodies
Trapping of sickled red s leading to splenic infarction
Autosplenectomy
Sickle cell anemia
Types of crisis in Sickle cell anemia
Vasoocclusive
Sequestration
Aplastic
Chronic tissue hypoxia Hyposthenuria - cannot concentrate urine Infections Prominent cheekbones Crewcut skull appearace Chronic hyperbilirubinemia
Sickle Cell Anemia
Sickle cell anemia
Initial dx test
Periph blood smear
Sickle cell anemia
Gold std
Hb electrophoresis
Sickle cell anemia
DOC
Hydroxyurea
Alpha thalassemia 1 2 3 4
Silent carrier state
A thalassemia trait
Hemoglobin H disease
Hydrops fetalis
Beta thalassemias
Transfusion dependence. HbF
Severe but no transfusion
Asx
Major cooley’s anemia
Intermedia
Minor
Dehydrated RBCs with bull’s eye appearance
Target cells or codocytes
Thalassemia
Basophilic stippling
Anisocytosis
Poikilocytosis
Microcytic hypochromic anemia
Thalassemia
Crew cut skull appearance
Chipmunk facies
Hemosiderosis
Hemochromatosis
Thalassemia
Treatment for hemochromatosis
Phlebotomy
DOC for hemochromatosis
Deferoxamine chelation
Leading cause of death in PNH
Thrombocytosis