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Details

Platelet, Vascular, and Coagulation Disorders
Clinical Medicine Test 5
22
Medical
Graduate
11/03/2010

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Cards

Term
What are six steps to the approach of a patient with a hemorrhagic disorder?
Definition
1) systemic?
2) spontaneous?
3) Severity
4) Age at presentation
5) Family Hx
6) Underlying disorder
Term
What is the hallmark of thrombocytopenia?
Definition
nonpalpable petechiae
Term
What platelet count is considered safe?
Definition
>20,000
Term
What is ITP characterized by?
Definition
rapid destruction of platelets by autoantibody IgG
Term
What is the most cause of mortality in ITP patients?
Definition
intracranial bleeding
Term
What are some treatments for ITP?
Definition
1) avoid aspirin/NSAIDS
2) Prednisone
3) if Prednisone fails - splenectomy
4) IV immune globulin
Term
What are the 5 major manifestations of TTP?
Definition
1) severe microangiopathic hemolytic anemia
2) moderate-severe thrombocytopenia with increased marrow megakaryocytes
3) Fever
4) CNS signs/symptoms
5) Renal Disease
Term
What are 4 abnormalities of platelet function?
Definition
1) myeloproliferative diseases and associated platelet abnormalities
2) Uremia
3) Liver disease
4) Drug-induced platelet disorders
Term
platelet count >500,000 with normal function is what?
Definition
reactive thrombocytosis
Term
What are vascular purpuras characterized by?
Definition
cutaneous hemorrhage, occasionally associated with mucosal bleeding
Term
What is the most common hereditary bleeding disorder?
Definition
Von Willebrand Disease
Term
What is the most common type of Von Willebrand disease?
Definition
Type 1: vWF antigen, Factor VII, and ristocetin cofactor levels are all decreased
Term
What is effective to treat traumatic bleeding or prior to surgery in those with Von Willebrand disease?
Definition
DDAVP

*stimulates release of vWF from endothelial cells
Term
What is deficient or defective in Hemophilia A?
Definition
Factor VIII
Term
What is an important aspect for diagnosis of hemophilia A?
Definition
family history of bleeding
Term
What can be given to patients with Hemophilia A?
Definition
cryoprecipitate - factor VII replacement
Term
What is the most common acquired hemorrhagic disorder?
Definition
vitamin K deficiency
Term
What is the general pathophysiology of DIC?
Definition
massive activation of clotting cascade overwhelming anithtrombotic mechanisms giving rise to uncontrolled thrombin generation
Term
What diagnostic findings suggest DIC?
Definition
1) microangiopathic RBCs
2) moderate thrombocytopenia
Term
What three populations have a higher incidence of acquired hemophilia?
Definition
1) elderly
2) during pregnancy
3) postpartum
Term
Where are the most frequent hemorrhages related to severe liver disease?
Definition
1) esophageal
2) GI
3) gastric
4) peptic Ulcer
Term
What is a revealing clue postoperatively of a systemic malfunction?
Definition
bleeding at multiple sites, particular areas other than surgical wound
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