Part 1 Level 3 Dxh Competency

20 Questions | Total Attempts: 97

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Part 1 Level 3 Dxh Competency - Quiz

Questions and Answers
  • 1. 
    Mark, the DxH operator, is running the latron after a shutdown.  The latron is out of specification.  What should Mark do first?
    • A. 

      Repeat with the same vial.

    • B. 

      Repeat with a new vial.

    • C. 

      Call service.

  • 2. 
    Mark runs the latron again with the same vial; it is out of specification again.  What should Mark do?
    • A. 

      Repeat with the same vial.

    • B. 

      Repeat with a new vial.

    • C. 

      Call service.

  • 3. 
    Mark runs the latron again with the new vial; it is out again.  What should Mark do?
    • A. 

      Repeat with the same vial.

    • B. 

      Call the Superviser.

    • C. 

      Call service.

  • 4. 
    Mark calls service.  Service instructs Mark to bleach the appertures with a 15 minute dwell time.  What must Mark do after he bleaches the appertures?
    • A. 

      He must perform a Diluent Purge to remove the bleach.

    • B. 

      He must do a Shutdown and run Daily Checks.

    • C. 

      He must zap the apertures to drain and rinse the baths.

  • 5. 
    Mark, the DxH operator, receives a pediatric bullet of blood for analysis on the DxH.  What is Mark's first step?
    • A. 

      Mixed the specimen.

    • B. 

      Check the specimen for clots.

    • C. 

      Put the DxH in Single-Presentation mode.

  • 6. 
    Mark checks the pediatric bullet for clots and finds there are numerous fibrin strands in the specimen.  What should Mark do?
    • A. 

      Reject the specimen.

    • B. 

      Remove the fibrin strands, vortex and run the specimen.

    • C. 

      Incubate the specimen at 37 C for 30 minutes.

  • 7. 
    Mark rejects the specimen and requests a new specimen. The new pediatric bullet also has fibrin strands.  What should Mark do?
    • A. 

      Reject the specimen.

    • B. 

      Remove the fibrin strands, vortex, repeat testing and TNP platelet count noting a blue top tube is needed due to fibrin strands.

    • C. 

      Cancel the specimen and request a blue top tube.

  • 8. 
    Mark rejects the specimen and requests a new specimen. A third pediatric bullet is sent down.  It also has fibrin strands.  What should Mark do?
    • A. 

      Reject the specimen.

    • B. 

      TNP platelet count noting fibrin strand interference.

    • C. 

      Cancel the specimen and note that the redraw must be venipuncture.

  • 9. 
    What is the most likely cause of the fibrin strands?
    • A. 

      High platelet count

    • B. 

      High fibrin content in the blood

    • C. 

      Poor collection technique

  • 10. 
    Mark, the DxH operator has a STAT EDTA specimen from the ER which is labeled with a BNP label.  Mark checks MediTech and discovers it needs both a CBCD and a BNP.  What should Mark do?
    • A. 

      Run the CBCD and after it is resulted give the specimen to Chemistry.

    • B. 

      Call the floor and tell the nurse that he is cancelling the CBCD and that the nurse needs to reorder the CBCD and draw a new EDTA tube.

    • C. 

      Give the specimen to Chemistry and run the CBCD when they are finished with it.

  • 11. 
    Mark decides to run the specimen before giving it to Chemistry.  He puts it in a cassette and places it on the DxH. What will happen?
    • A. 

      The DxH will not run the specimen because it has a BNP label on it.

    • B. 

      The DxH will run the specimen using the default settings but it will not automatically cross the results to Remisol.

    • C. 

      The DxH will run the specimen using the default settings and cross the results to Remisol but the results will get "held" at Remisol.

  • 12. 
    The results have an H & H Check Fail flag.  What should Mark do first?
    • A. 

      Nothing the BNP label caused the flag.

    • B. 

      Centrifuge a small aliquot to check for lipemia.

    • C. 

      Incubate the specimen at 37 C for 30 minutes.

  • 13. 
    Mark decides to perform a saline replacement on the lipemic specimen.  What must he do before he starts the procedure?
    • A. 

      Make a slide.

    • B. 

      Incubate the specimen at 37 C for 30 minutes.

    • C. 

      Verify the MCHC is elevated.

  • 14. 
    Mark performs a saline replacement on the lipemic specimen.  Which parameter on the treated specimen must match the pre-treated specimen for the testing to be valid?
    • A. 

      WBC count

    • B. 

      RBC count

    • C. 

      Platelet count

  • 15. 
    The treated specimen RBC result does not match the pre-treated specimen RBC result.  What should Mark do now?
    • A. 

      Just report out the WBC, PLTs and Hgb then TNP (Test Not Performed) rest of the results.

    • B. 

      Add saline or RBCs until the result matches.

    • C. 

      Repeat the Saline Replacement procedure from the beginning with a new aliquot of the lipemic specimen.

  • 16. 
    What comment must be appended to results when a Saline Replacement procedure is used during testing?
    • A. 

      Saline Replacement performed.

    • B. 

      Questionable results, a saline replacement had to be performed.

    • C. 

      If the results are valid, there is no need to append a message.

  • 17. 
    What did Mark NOT do that he should have done?
    • A. 

      Document in the communication log, the reason for the increased TAT.

    • B. 

      Verify the results on the back-up DxH.

    • C. 

      Notify the ER doctor that the TAT would be increased due to the lipemia.

  • 18. 
    Mark runs a CBC on the DxH, there is a flag on the printout indicating possible platelet clumping.  What should Mark do first?
    • A. 

      Request a new specimen.

    • B. 

      Check the specimen for clots.

    • C. 

      Vortex and rerun the specimen on the DxH.

    • D. 

      Verify the platelet count on the smear.

  • 19. 
    Mark checked the specimen for clots.  The specimen did not have any clots so Mark vortexed and reran the specimen on the DxH.  The printout still had a flag indicating possible platelet clumps.  Mark made a smear and verified on the smear that there were many platelet clumps.  What should Mark do now?
    • A. 

      TNP the platelet count result with a comment stating the platelet count appears to be adequate.

    • B. 

      TNP the platelet count and request a new EDTA specimen.

    • C. 

      TNP the platelet count and request a blue top tube for the platelet analysis.

    • D. 

      Notify the nurse that the platelet count cannot be performed due to platelet clumping.

  • 20. 
    Mark received a blue top tube for platelet analysis on the DxH.  There are no flags on the DxH's printout.  What must Mark do prior to reporting out the platelet count?
    • A. 

      Nothing, since there are no flags the result will autocross.

    • B. 

      Verify the platelet count on a manual smear.

    • C. 

      Multiply the platelet count on the printout by 1.1 to correct for sample dilution.

    • D. 

      Reject the specimen only EDTA specimens can be run on the DxH.

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