Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
Does not require vitamin K to its production by the liver? Not a serine protease? Classic hemophilia? |
Factor VIII |
|
Precursor of thrombin? Coag family that is dependent on vitamin K synthesis? |
Prothrombin |
|
Fibrinogen is converted to fibrin by? |
Thrombin |
|
Acts on fibrin? |
Plasmin |
|
End result of most coag test? |
Fibrin clot |
|
Prothrombinase complex. |
Xa-Va-phospholipid-calcium |
|
*Origin of platelets in the bone marrow? |
Megakaryocytes |
|
Low platelet count & normal bleeding time. |
Autoimmune thrombocytopenia |
|
Normal range of direct platelet count? |
140,000 - 440,000 / uL |
|
*Bleeding tendency. |
50,000/uL |
|
Quantitative defect of platelets is known as? |
Thrombocytopenia |
|
*Thrombocytopenia? |
Prolonged bleeding time |
|
Thrombocythemia? |
Platelets are markedly increased |
|
Factor VIII is present in highest concentration. |
Cryoprecipitate |
|
Prolonged bleeding time with normal platelet count? |
Aspirin digestion Vascular abnormality vW syndrome |
|
Test that uses a reagent form of tissue thromboplastin. |
Prothrombin time |
|
*Phase contrast microscope |
Brecker cronkite |
|
If PT is abnormal, APTT is normal? |
Factor VII |
|
If PT is normal, APTT is normal? |
Factor VIII |
|
Bleeding time, PT - NORMAL APTT - ABNORMAL |
VIII |
|
Only test that is sensitive to a deficiency of factor VII? |
Prothrombin time |
|
APTT serves as a screening procedure for? |
All except VII and XIII |
|
5M urea of 1% monochloroacetic acid. |
XIII |
|
Diagnosis of von Willebrand’s disease |
Decreased VIII:C “ VIIIR:RCo Prolonged bleeding time |
|
Occur in the alternate pathway? |
Factor VIIIa, can activate IX & X Factor IX & kallikrein can activate factor VII Factors XIIa, Xa, IXa or thrombin can activate VII |
|
Principle inhibitor of thrombin & factor Xa |
AT-III |
|
*Degrades factors Va & VIIIa |
Protein C |
|
*Accelerates inactivation of factors Va & VIIIa |
Protein S |
|
*Inhibits vitamin K |
Coumadin |
|
Inactivates zymogen, binds fibrin ay critical lysine binding sites |
Plasminogen |
|
Greatly enhances activity of AT-III |
Heparin |
|
Activates plasminogen for lysis if thrombi |
Streptokinase |
|
Inactivates coag factors through phospholipoprotein components. |
Lupus-like anti coagulant |
|
*Fibrinogen has to decrease below what level to affect the various clotting test? |
75 mg/dL |
|
Increased platelet destruction? |
Idiopathic thrombocytopenic purpura |
|
DIC is associated with? |
Snake bites Placenta praevia Acute granulocytic leukemia or acute monocytic leukemia |
|
*Results of patient with DIC? |
⬇️ plts & factors 1,5,8 Prolonged PT, APTT & TT Positive D-dimer |
|
*Ehlers Danlors, vW & Bernard Soulier are all qualitative platelet disorders that have abnormalities of |
Adhesion |
|
*Qualitative platelet disorder that has abnormal primary aggregation. |
Glanzmann |
|
Storage pool deficiency & Wiskott- Aldrich are qualitative platelet disorder that have abnormal |
Secondary aggregation |
|
Qualitative Platelet Disorders |
Storage pool deficiency Wiskott - Aldrich Glanzmann Ehlers Danlos von Willebrand Bernard Soulier |