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Hematology Chapter 18
Hemolytic Anemia: Nonimmune Defects
29
Biology
Graduate
12/13/2012

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Term
Microangiopathic Hemolytic Anemia
Definition
Hemolytic process caused by microcirculatory lesions which cause damage to endothelial lining of the small vessels and deposition of platelets and fibrin in microvasculature
Term
Thrombotic thrombocytopenic purpura (TTP) affects
Definition
ages 20-50
Term
Hemolytic uremic syndrome (HUS) affects
Definition
age 0-2
Term
Complications of pregnancy affects
Definition
pregnant women
Term
General morphology for MAHA
Definition
Schistocytes, microspherocytes, ↑ retics
Term
Hematologic values associated with MAHA
Definition
increased bilirubin
Term
Characteristic erythrocyte morphology of MAHA
Definition
Schistocytes, microspherocytes, ↑ retics, helmet cells
Term
Organisms that can cause erythrocyte hemolysis
Definition
malarial parasites, Babesiosis protozoan, Bees, wasps, spiders, scorpion’s venom
Term
General pathophysiology for MAHA
Definition
Hemolytic process caused by microcirculatory lesions due to damage to endothelial lining of the small vessels and deposition of platelets and fibrin in microvasculature. Thrombus formation within the blood vessels causes RBC forced through fibrin strands in thrombus and fragmented by the force of flowing blood
Term
HUS clinical findings for D+
Definition
acute onset (Sudden pallor, abdominal pain, vomiting, Bloody diarrhea, macroscopic hematuria), Most serious complication is acute renal failure or chronic renal insufficiency, CNS symptoms are not very severe but possibly present
Term
HUS clinical findings for D-
Definition
reoccring disease, assocaited with various disease
Term
HUS treatment for D+
Definition
recovery, supporitve therapy, control of electrolyte and water imbalances, Mabs agaisnt shiga toxin
Term
HUS treatment for D-
Definition
close observation, blood transfusion, plasma exchange
Term
HUS characteristic findings for eryrocytes
Definition
low hemoglobin, polychromasia, nRBCS, leukocytes shift to left,
Term
HUS platelet count
Definition
very low
Term
HUS coagulation tests
Definition
normal or slightly abnormal
Term
TTP clinical findings
Definition
thrombocytopenia, severe CNS symptoms, slight renal involvement, fever, anemia
Term
TTP treatment
Definition
plasma exchange with fresh frozen plasma, cyrosupernatant, drug treatment
Term
TTP characteristic findings for eryrocytes
Definition
schistocytes ,low hemoglobin, immature leukocytes,
Term
TTP platelet count
Definition
low platelets
Term
TTP coagulation tests
Definition
normal or slight prolonged
Term
DIC clinical findings
Definition
bleeding, organ failure, consumption of coagulase proteins
Term
DIC treatment
Definition
RBC and platelet transfusions, FFP, factor concentrates, treatment of underlying disorder
Term
DIC characteristic
Definition
findings for eryrocytes: Thrombocytopenia and schistocytes
Term
DIC platelet
Definition
low
Term
DIC coagulation tests
Definition
prolonged
Term
Exercise induced hemoglobinuria
Definition
transient hemolysis due to traumatic disruption of the RBC membrane, associated with strenuous exercise, anemia is absent,
Term
Plasmodium parasites (malaria)
Definition
Extravascular destruction of parasitized erythrocytes
Term
Babesia parasites
Definition
Extravascular hemolysis due to Protozoan intracellular infection
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