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 (C)</p> Signup and view all the answers

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

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

What does the R time measure in TEG parameters?

<p>Clot formation time (D)</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 (C)</p> Signup and view all the answers

What does the K time measure in TEG parameters?

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

What does Thromboelastography (TEG) measure?

<p>Multiple components of the coagulation cascade (D)</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 (B)</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) (D)</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 (B)</p> Signup and view all the answers

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

<p>High amplitude clot achieves (B)</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 (A)</p> Signup and view all the answers

What does the R time measure in TEG parameters?

<p>Time until clot starts forming (D)</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 (C)</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 (D)</p> Signup and view all the answers

Flashcards

What does the R time measure in TEG parameters?

The time it takes for a clot to start forming.

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

Indicates a potential deficiency in fibrinogen, as clot formation is delayed.

What does the Alpha angle in TEG parameters represent?

Represents the angle of the slope between the R time and K time on the TEG graph. Indicates how quickly fibrinogen is forming the clot.

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

Suggests excessive clot lysis, meaning the clot is breaking down too quickly.

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

Measures the strength of the clot, reflecting the combined activity of platelets and fibrinogen.

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

Indicates a potential issue with fibrinogen's ability to form a stable clot quickly.

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What does the R time measure in TEG parameters?

The time it takes for a clot to start forming.

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

Suggests excessive clot lysis, indicating that the clot is breaking down too quickly.

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What does the K time measure in TEG parameters?

Measures the time it takes for a clot to reach a certain strength, indicating how quickly the clot is forming.

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What does Thromboelastography (TEG) measure?

Measures multiple aspects of the coagulation cascade, providing a comprehensive view of blood clotting.

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

Indicates a potential deficiency in coagulation factors and fibrinogen, leading to slow and weak clot formation.

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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?

Fresh frozen plasma (FFP) can be used to replace the missing coagulation factors in a patient with extended R and K times.

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

While PT and PTT are static tests measuring specific clotting factors, TEG is a dynamic test that tracks the overall clotting process.

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

Measures the strength of the clot, reflecting the maximum amplitude achieved during the coagulation process.

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

Indicates a potential issue with fibrinogen's ability to form a stable clot quickly, resulting in slow and weak clot formation.

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What does the R time measure in TEG parameters?

The time it takes for a clot to start forming.

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What does the K time measure in TEG parameters?

Measures the time it takes for a clot to reach an amplitude of 20 mm, reflecting the speed of clot formation.

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

Suggests excessive clot lysis, meaning the clot is breaking down too quickly, potentially due to increased fibrinolytic activity.

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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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