Sem1mini3 - ECG MCQ

7 Questions | Total Attempts: 1301

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Sem1mini3 - ECG MCQ

Questions and Answers
  • 1. 
    • A. 

      Normal Normal Normal

    • B. 

      Normal Greater than normal Normal

    • C. 

      Normal Normal Greater than normal

    • D. 

      Bradycardia Normal Less than normal

    • E. 

      Bradycardia Greater than normal Less than normal

    • F. 

      Bradycardia Less than normal Normal

  • 2. 
    The figure below shows a ventricular action potential.  Which of the numbered portions of the action potential most closely corresponds to the ST-segment on an ECG trace?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      5

  • 3. 
    What electrical event of the heart is NOT recorded on the standard 12-lead ECG trace?
    • A. 

      Atrial depolarization

    • B. 

      Atrial repolarization

    • C. 

      Phase 2 of the ventricular action potential

    • D. 

      Ventricular repolarization

    • E. 

      Phase 4 of the ventricular action potential

  • 4. 
    • A. 

      Repolarization of the ventricular endocardial surface before the epicardial surface.

    • B. 

      Depolarization of the ventricular septum before the left ventricular wall

    • C. 

      Conduction delay caused by the AV-node

    • D. 

      Wave of depolarization moving away from the positive electrode.

    • E. 

      Depolarization of the right ventricle before the left ventricle.

  • 5. 
    Choose the answer choice below which most closely represents the heart rate of the ECG trace shown.
    • A. 

      300 beats per minute

    • B. 

      150 beats per minute

    • C. 

      100 beats per minute

    • D. 

      75 beats per minute

    • E. 

      60 beats per minute

  • 6. 
    • A. 

      PR interval would be smaller

    • B. 

      QRS interval would be shorter

    • C. 

      There would be more P waves than QRS complexes

    • D. 

      There would be more QRS complexes than P waves

    • E. 

      The T wave would be absent

  • 7. 
    The T Wave on an EKG represents:
    • A. 

      Ventricular Depolarization

    • B. 

      Ventricular Repolarization

    • C. 

      Atrial Depolarization

    • D. 

      Atrial Repolarization

    • E. 

      Ventricular Systole