heme part 2 Flashcards
What are some reasons for prolonged PTT
Heparin
DIC
vWD
Hem A/B
What is the treatment for Heparin overdose
Protamine Sulfate
What measuring the intrinsic pathway
PTT - I II V VIII IX X XI XII
1, 2, 5, 8, 9, 10, 11, 12
What measuring the extrinsic pathway
PT - I, II, V, VII, X
1, 2, 5, 7, 10
What are some reasons for prolonged PT
warfarin therapy
vitamin K
DIC
what is the treatment for warfarin overdose
Vitamin K
Key terms for this diagnosis- Thrombocytopenia, microangiopathic hemolytic anemia, neurologic (headache, stroke) symptoms, fever
Thrombotic thrombocytopenic Purpura - TTP
ADAMTS-13 is positive in what ?
Thrombotic thrombocytopenic Purpura - TTP
What labs are positive with Thrombotic thrombocytopenic Purpura - TTP
Thrombocytopenia - low pLT's Normal PT, PTT Hemolytic anemia The problem is not clotting factors this is how you can tell the difference between DIC
Treatment for Thrombotic thrombocytopenic Purpura - TTP
- Plasma
- steroids to suppress the immune system
- Cyclophosphamides
Do not give pLT’S it will cause CLOTS!
Key terms for this diagnosis- Thrombocytopenia, microangiopathic hemolytic anemia and kidney failure, children
Hemolytic Uremic Syndrome - HUS
what is Hemolytic Uremic Syndrome - HUS usually caused by?
Enterohemorrhagic E Coli 0157: H7
Shigella
Salmonella
Labs for HUS
Hemolytic anemia
BUN/Creatine
Treatment for Hemolytic Uremic Syndrome - HUS
- Plasma - FFP
2, antibiotics can make worse
Pathological activation of coagulation system leading to widespread micro-thrombi which consumes clotting proteinss V, VIII fibrinogen and plts
leading to severe thrombocytopenia and diffuse bleeding
Disseminated Intravascular Coagulation- DIC
What are some causes of DIC
Infections- Gram neg endotonixs
Maligancy- AML, Lung or GI, Prostate
OB- pre-eclampsia, abruptio placentae
burns, trauma, liver disease
what are symtoms of DIC
widespread hemorrhage- at blood draw sites, mouth nose bleeding
clots -> renal failure and gangrene
Labs for DIC Fibriogen PTT PT/INR PLTS RBCs shape
Fibriogen- decreased it is being used up PTT- proglonged PT/INR - proglonged PLTS- severely low RBCs shape - schistocytes Fibinolysis- D-dimer +
aquired abnormal isolated thrombocytopenia of unknown cause
Idiopathic autoimmune thrombocytopenia purpura- ITP
Acute ITP is most common in whom?
Chronic ITP ?
Acute- boys with viral infection and self limiting
chronic- adults often recurrent
S/S of ITP
often asymptomatic
mucous bleeding- purpura or bruises
petechiae, bullae, nose bleeds, hemorrhage, bleeding gums
what labs are positive in ITP
only low PLT’S
smear- megakaryocytoes or large sized platelets
Treatment for ITP
Children- observe
Adults- steroids, IVIG, splenectomy
Hemophilia A is what factor deficiency
factor VIII 8
Hemophilia B is what factor deficiency
factor XI 9 - Christmas disease
Key terms for this diagnosis- x-linked recessive trait occurs in males, Intrinsic pathyway affected, hemathrosis
Hemophilia A - Factor VIII 8 deficiency
Hemophilia A - Factor VIII 8 deficiency
labs
Prolonged PTT
normal PT
normal platelet levels
Treatment for Hemophilia A - Factor VIII 8 deficiency
- Factor VIII 8 & vWF
2. Desmopressin - DDAVP
Key terms for this diagnosis- X-linked recessive trait in males, deep tissue bleeding, prolonged PTT that corrects with a mixing study
Hemophilia B- IX 9 Christmas factor
Treatment for Hemophilia B
Factor IX 9 infusion only
Desmopressin DDAVP is not helpful