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Author Question: The bleeding time result will be normal and thus of no value to perform in patients who have: a. ... (Read 116 times)

brutforce

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on: Jun 25, 2018
The bleeding time result will be normal and thus of no value to perform in patients who have:
 
  a. A qualitative platelet disorder
  b. von Willebrand disease (VWD)
  c. Glanzmann thrombasthenia
  d. Factor VIII deficiency

Question 2

How often must the partial thromboplastin time (PTT) reference interval be determined?
 
  a. Only when both the normal and abnormal controls are outside their acceptable limits
  b. At least every 6 months
  c. With each new lot of reagent
  d. Only when the normal control is outside its acceptable limits


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amynguyen1221

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: D
The bleeding time result will be normal in patients with a factor VIII deficiency. It ideally will be prolonged in all the other listed settings. The bleeding time test is being used less often because it has poor predictive value and leaves scarring.

Answer to Question 2

ANS: C
The PTT reference interval must be determined with each new lot of reagent and at least once per year.


brutforce

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Reply 2 on: Jun 25, 2018
Great answer, keep it coming :)

apple

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Reply 3 on: Yesterday
Gracias!

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