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Heme
Adult medicine hematology
22
Medical
Graduate
01/27/2007

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Term
anemia
Definition
Any condition in which the number of red blood cells, amount of hemoglobin, and the volume of packed red blood cells are less than normal.

Anemia is present in adults if the hematocrit is less than 41% (hemoglobin < 13.5 g/dl) in males or 37% (hemoglobin <12 g/dl) in females. Congenital anemia is suggested by the patients personal and family history.
Anemia is frequently manifested by pallor of the skin and mucous membranes, shortness of breath, palpitations of the heart, soft systolic murmurs, lethargy, and fatigability
Term
anisocytosis
Definition
variation in RBC size
Term
poikilocytosis
Definition
variation in RBC shape shape (eg. elliptocytes, spherocytes, dacryocytes, sickle cells, schistocytes, echinocytes, acanthocytes)
Term
shistocytes
Definition
Fragmented RBCs that appear in a variety of shapes. They appear in the blood of patient with hemolytic anemias
Term
Target cells
Definition
A RBC that consists of a peripheral ring and central disc of Hb. (Target cells are associated with thalassemias and chronic liver disease.
Term
MCHC
Definition
(Mean Corpuscular Hemoglobin Concentration): estimates the average concentration of Hb in
the average RBC.
Calculated by dividing Hb level by Hct level. Reference values are 32-36%
manual method or 31-37% by Coulter Counter.
Term
MCV
Definition
Mean Corpuscular Volume. Represents avg RBC size. 80-94 for males and 81-99 for females
Term
Polycythemia
Definition
increased RBCs
Term
Hypoproliferation
Definition
Decreased production of RBCs
Iron deficiency
Folic acid deficiency
Vitamin B12 deficiency / Pernicious anemia
Anemia of chronic disease
Aplastic anemia
Term
Hyperproliferation
Definition
Increased destruction
Hemolytic anemia
Term
Microcytic anemia
Definition
Fe deficiency
Thalassemia
anemia of chronic dz
Term
Macrocytic
Definition
Vit B12 deficiency
folate deficiency
chronic liver dz
alcoholism
Term
Normocyctic anemia
Definition
chronic renal failure
aplastic anemia
Term
Anemia of chronic dz
Definition
s/sx: fatiguability, tachycardia, palpitations, SOB, brittle nails, dysphagia, pica.
Labs: HCT >30. MCV nml or low. Low transferrin sat. Nml or high ferritin.
Tx: none besides dz tx
Term
Fe deficiency
Definition
Most common cause is GI bleed; dietary in infants. S/sx: fatigued, tachycardia, palpitations, SOB.
Tx: ferrous sulfate until hgb nml.
Term
Folic acid deficiency
Definition
cause: dietary, absorptive dz (sprue)
S/sx: anemia.
Tx: folic acid 1mg/dy PO
Term
B12 deficiency
Definition
Dietary (vegans), decreased production of IF, H. pylori (competes fro B12 in gut), pancreatic insufficiency, decreased absorption, gastrectomy, Chrohns.
S/sx: anemia w/ peripheral neuropathy
Tx: B12 pareterally
Term
Aplastic anemia
Definition
a condition of bone marrow failure- congenital, idiopathic, SLE, drugs, toxins.
S/Sx: neutropenia, thrombocytopenia.
Tx: transfusions, bone marrow transplant, immunosupression
Term
Acute lymphoblastic leukemia
Acute myelogenous leukemia
Definition
ALL: 80% of childhood leukemia
AML: primarily adult
For both: ill for only a few days/weeks- fatigue, malaise, bleeding (skin, mucosal, epistaxis, menorrhagia), infections (cellulitis, pneumonia, periectal), HA, confusion and dyspnea, bone tenderness.
Term
Chronic lymphocytic lymphoma
Definition
Adults. Most asymptomatic. Fatigue, lymphadenopathy, heptatosplenomegaly
Term
Non-hodgkins
Definition
Varies from indolent to rapidly progressive. Painless lymphadenopathy in retroperitoneal, mesentary, pelvis; fever, nightsweats, weightloss.
Term
Hodgkins
Definition
Painless lymphadenopathy (neck), fever, nightsweats, weight loss (or gain), pruritis, pain in nodes after EtOH.
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