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Hematology Internship Section 3
Coagulation/Hemostasis Coagulation Disorders. Page 101
34
Biology
Undergraduate 4
10/14/2015

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Term
Protein S is a cofactor for what other protein?
Definition
Protein C
Term
Given the etiology, Name the Coagulation Disorder:

Protein C binds to activated factors V & VIII and STOPS CLOTTING.
Definition
Protein C or S Deficiency
Term
Protein C acts as a natural _________.
Definition
Anticoagulant
Term
Is a Protein C or S Deficiency generally acquired or genetic?
Definition
Genetic, but are Vitamin K Dependent.
Term
True or False:

Both protein S and C are Vitamin K dependent so they CAN'T be assayed until 2 weeks after stopping Coumadin (since Coumadin has an affect on Vitamin K)
Definition
True
Term
Which coagulation disorder is associated with the following clinical presentation:

Associated with life-long blood clots that can be fatal
Definition
Protein C or S Deficiency
Term
Patients that have been diagnosed as have a Protein C or S Deficiency are put on what type of medication?
Definition
Coumadin
Term
What is another name for Activated Protein C Resistance?
Definition
Factor V Leiden Mutation
Term
Given the etiology, Name the Coagulation Disorder:

Without the ability to inhibit activated factors V & VIII, clots form.
Definition
Activated Protein C Resistance / Factor V Leiden Mutation
Term
Is Activated Protein C Resistance / Factor V Leiden Mutation Acquired or Genetic?
Definition
Genetic
Term
True or False:
Clot-based tests can be used to diagnose Activated Protein C Resistance / Factor V Leiden Mutation
Definition
True
Term
What is the definitive test to diagnose Activated Protein C Resistance / Factor V Leiden Mutation?
Definition
Molecular procedure to detect the gene mutation
Term
Given the Clinical description, name the coagulation disorder associated with it:

INCREASED Tendency to have EXCESS Clot Formation
Definition
Activated Protein C Resistance / Factor V Leiden Mutation
Term
What is the MOST COMMON Genetic Thrombophilia?
Definition
Activated Protein C Resistance / Factor V Leiden Mutation
Term
Given the etiology, name the Coagulation Disorder:

Antithrombin neutralizes factor Xa and Thrombin to protect against excess clotting. Process accelerated by Heparin.
Definition
Antithrombin (AT) Deficiency
-Formerly called "ATIII"
Term
If a patient is Antithrombin Deficient, what will the patient form?
Definition
Thrombosis
Term
True or False:
AT Deficiency can be Genetic OR Acquired in DIC, Liver Disease, and Woman on Oral Contraceptives
Definition
True
Term
What is the Test to Diagnose AT Deficiency?
Definition
Plasma is Mixed with a Known Excess of Thrombin or Xa in the presence of Heparin. Amount of thrombin left after neutralization inversely proportional to AT.
Term
What is AT Deficiency often suspected?
Definition
When a patient's PTT does NOT rise as expected after NORMAL dosing with Heparin following a clot.
Term
Given the clinical description, name the Coagulation Disorder:

Thrombosis
Definition
AT Deficiency
Term
True or False:
Since Heparin works by binding to Antithrombin (AT), MORE Heparin must be given for clots to form since AT will be deficient.
Definition
True
Term
Given the etiology, name the Coagulation Disorder:

Autoantibody to platelets causes INCREASED destruction by the spleen
Definition
Immune/Idiopathic Thrombocytopenic Purpura (ITP)
Term
Is ITP acquired or genetic?
Definition
Acquired
Term
In whom are Acute cases of ITP seen?
Definition
Children after an infection
Term
In whom are Chronic cases of ITP seen?
Definition
Young Women
-can be longer lasting
Term
Given the following test results, name the Coagulation Disorder associated with the results:

VERY DECREASED Platelet Count
Rest of CBC NORMAL
PAIgG (anti platelet antibody) is POSITIVE
Definition
Immune/Idiopathic Thrombocytopenic Purpura (ITP)
Term
True or False:
Bruising is a clinical sign that is often associated with ITP
Definition
True
Term
How would/should you treat ITP?
Definition
Steroides if spontaneous remission does not occur.
Term
True or False:
You can also use IV immunoglobulin, RhIG, or perform a splenectomy to treat ITP.
Definition
True
Term
Given the etiology, Name the Coagulation Disorder:

HPA-1a platelet antibody in mother passes to fetus causing DECREASED Platelets
Definition
Neonatal Alloimmune Thrombocytopenia (NAIT)
Term
Is Neonatal Alloimmune Thrombocytopenia (NAIT) Acquired or Genetic?
Definition
The Mother typically develops the antibody after previous pregnancy or transfusion. (Acquired)
Term
True or False:
In Neonatal Alloimmune Thrombocytopenia (NAIT), the infant's Platelet count is LOW at Birth
Definition
True
Term
If bleeding occurs in the brain with an infant having Neonatal Alloimmune Thrombocytopenia (NAIT) what can occur?
Definition
It can be fatal
Term
The mechanism of Neonatal Alloimmune Thrombocytopenia (NAIT) is similar to HDN. How is it different?
Definition
Mechanism is with platelets (plts) rather than red blood cells (RBCs)
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