TEG Parameters and Coagulation Factors Quiz
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Questions and Answers

What does the R time measure in TEG parameters?

  • Time until clot reaches amplitude of 20 mm
  • Maximum amplitude achieved by the clot
  • The angle of slope between R time and K time
  • Time until clot starts forming (correct)

    • If the K time is extended in TEG parameters, what issue with coagulation factors might be indicated?

  • Fibrinogen is forming clot slowly (correct)
  • Clot is being lysed too much
  • High amplitude clot achieves
  • Clot is small and weak

    • What does the Alpha angle in TEG parameters represent?

  • Time until clot reaches amplitude of 20 mm
  • Time until clot starts forming
  • High amplitude clot achieves
  • The angle of slope between R time and K time (correct)

    • If the lysis at 30 minutes (LY30) is high in TEG parameters, what might this indicate?

    <p>Clot is being lysed too much</p> Signup and view all the answers

    What does the Maximum Amplitude (MA) measure in TEG parameters?

    <p>Platelets and fibrinogen</p> Signup and view all the answers

    If the Alpha angle is shallow in TEG parameters, what might this indicate?

    <p>Fibrinogen forming clot slowly</p> Signup and view all the answers

    What does the R time measure in TEG parameters?

    <p>Clot formation time</p> Signup and view all the answers

    If the Lysis at 30 minutes (LY30) is high in TEG parameters, what might this indicate?

    <p>Excessive clot lysis</p> Signup and view all the answers

    What does the K time measure in TEG parameters?

    <p>Clot formation time</p> Signup and view all the answers

    What does Thromboelastography (TEG) measure?

    <p>Multiple components of the coagulation cascade</p> Signup and view all the answers

    What might an extended R time, K time, and alpha angle in TEG parameters indicate?

    <p>Deficiency in coagulation factors and fibrinogen</p> Signup and view all the answers

    What should be used to increase the amount of coagulation factors in a patient with an extended R time and K time in TEG parameters?

    <p>Fresh frozen plasma (FFP)</p> Signup and view all the answers

    What is the difference between Thromboelastography (TEG) and prothrombin time (PT) or partial thromboplastin time (PTT) tests?

    <p>TEG is a dynamic test that measures multiple components of the coagulation cascade</p> Signup and view all the answers

    What does the Maximum Amplitude (MA) measure in TEG parameters?

    <p>High amplitude clot achieves</p> Signup and view all the answers

    If the Alpha angle is shallow in TEG parameters, what might this indicate?

    <p>Fibrinogen is forming clot slowly</p> Signup and view all the answers

    What does the R time measure in TEG parameters?

    <p>Time until clot starts forming</p> Signup and view all the answers

    What does the K time measure in TEG parameters?

    <p>Time until clot reaches amplitude of 20 mm</p> Signup and view all the answers

    If the Lysis at 30 minutes (LY30) is high in TEG parameters, what might this indicate?

    <p>Clot is being lysed too much</p> Signup and view all the answers

    Study Notes

    TEG Parameters

    • R time measures the time it takes for clotting to begin after blood is added to the TEG analyzer.
    • An extended K time may indicate a problem with coagulation factors, such as a deficiency or abnormality.

    Alpha Angle

    • The Alpha angle represents the speed of clotting.
    • A shallow Alpha angle may indicate a problem with clotting speed or strength.

    Lysis at 30 minutes (LY30)

    • A high LY30 may indicate a problem with clot break-down or increased fibrinolysis.

    Maximum Amplitude (MA)

    • MA measures the maximum strength of the clot.

    Thromboelastography (TEG)

    • TEG measures the viscoelastic properties of blood, including clotting time, strength, and stability.
    • TEG provides a comprehensive picture of the coagulation process, unlike PT or PTT tests which only measure specific aspects.

    Coagulation Factors

    • An extended R time and K time may indicate a need for coagulation factors, such as fresh frozen plasma or cryoprecipitate, to increase the amount of coagulation factors in a patient.

    Comparison with Other Tests

    • TEG is different from PT or PTT tests, which only measure specific aspects of coagulation, whereas TEG provides a comprehensive picture of the coagulation process.

    Abnormal Results

    • An extended R time, K time, and alpha angle may indicate a problem with coagulation, such as a bleeding disorder or a need for coagulation factors.

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    Related Documents

    Thromboelastography (TEG) Parameters PDF

    Description

    Test your knowledge of Thromboelastography (TEG) parameters and their relationship to coagulation factors. This quiz covers R time, K time, and Alpha angle, and how their extension or shallowness can indicate issues with coagulation factors and clot formation.

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