NCCT Practice Test - Labs Part Two

50 Questions | Total Attempts: 889

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NCCT Quizzes & Trivia

This is from section V of the big study book.


Questions and Answers
  • 1. 
    In the positioning of the electrodes, if the electrodes are placed to close together, the amplitude will be ______.
    • A. 

      Small

    • B. 

      Large

    • C. 

      Round

    • D. 

      Square

  • 2. 
    The large squares on the ECG paper are equal to
    • A. 

      0.10 sec

    • B. 

      0.20 sec

    • C. 

      0.40 sec

    • D. 

      0.09 sec

  • 3. 
    A "V wave" will _____ be seen in a normal EKG.
    • A. 

      Always

    • B. 

      Sometimes

    • C. 

      Never

    • D. 

      Usually

  • 4. 
    The _____ switch controls the gain or amplitude on the EKG.
    • A. 

      Major

    • B. 

      Sensitivity

    • C. 

      Red

    • D. 

      Ticker

  • 5. 
    When preparing for lead placement you should first care for ______.
    • A. 

      Skin preparation

    • B. 

      Application of electrode wires

    • C. 

      Application of electrodes

    • D. 

      Positioning of electrodes

  • 6. 
    Conversion of a dysrhythmia to a normal rhythm by applying electric shock to the chest is called ___.
    • A. 

      Cardiac scan

    • B. 

      Pacemaker implant

    • C. 

      Defibrillation

    • D. 

      Endarterectomy

  • 7. 
    Which of the following is not a criteria for skin preparation for lead placement?
    • A. 

      Clean the skin with an alcohol swipe

    • B. 

      Make sure the skin is damp when applying the electrode

    • C. 

      Shave the hair from the skin

    • D. 

      Roughen the skin for better dermis contact

  • 8. 
    The electrode site should be _____.
    • A. 

      Clean, smooth, and dry

    • B. 

      Hairy

    • C. 

      Have plenty of skin oil present

    • D. 

      Moist

  • 9. 
    An ECG tracing measures the amount of voltage and the ____ it takes for the voltage to travel throughout the heart.
    • A. 

      Time

    • B. 

      Route

    • C. 

      Waves

    • D. 

      Lines

  • 10. 
    In the application of electrodes, secure the electrode by rubbing your finger around the _____ area.
    • A. 

      Center

    • B. 

      Gel

    • C. 

      Adhesive

    • D. 

      Peripheral

  • 11. 
    When there is no variation of R-R intervals it is called ______.
    • A. 

      Irregular with a pattern

    • B. 

      Absolutely regular

    • C. 

      Essentially regular

    • D. 

      Totally irregular

  • 12. 
    Ventricular depolarization produces an electrical force or vector with 2 components: 1. magnitude or force, and 2. _____.
    • A. 

      Amplitude

    • B. 

      Ground electrode

    • C. 

      Direction or shape

    • D. 

      Polarization

  • 13. 
    A downward or negative wave of an electrocardiogram following the P wave is the _____.
    • A. 

      R wave

    • B. 

      T wave

    • C. 

      Q wave

    • D. 

      S wave

  • 14. 
    A premature ventricular contraction (PVC) where the QRS have the same configuration each time they appear is called ______.
    • A. 

      Uniform

    • B. 

      Malignant

    • C. 

      Fused

    • D. 

      Bigeminy

  • 15. 
    When applying leads, apply the VI lead _______.
    • A. 

      Directly lateral to V4 at the anterior axillary line

    • B. 

      The fourth intercostal space right sternal border

    • C. 

      Lateral to V5 at midaxillary line

    • D. 

      Fifth intercostal space midclavicular line

  • 16. 
    Which fact is true about the P wave?
    • A. 

      Duration of the P wave is not greater than 0.11 sec

    • B. 

      Height deflection is small, not more than 3mm

    • C. 

      Both A and B

    • D. 

      No correct answer

  • 17. 
    When PVC's fall on the T wave, occur in pairs, runs of 3 or more, or are multiform in nature, these conditions are called _____.
    • A. 

      Fused

    • B. 

      Multiform

    • C. 

      Life threatening

    • D. 

      Uniform

  • 18. 
    When a vector travels away from the positive electrode, a _____ deflection results.
    • A. 

      Positive

    • B. 

      Variation

    • C. 

      T wave

    • D. 

      Negative

  • 19. 
    The combination of sensors or electrodes used for lead #1 is ______.
    • A. 

      Right arm, left leg

    • B. 

      Right arm, right leg

    • C. 

      Left arm, right arm

    • D. 

      Left arm, left leg

  • 20. 
    Concerning ECG's for irregular rhythms, any method of rate calculation that depends on intervals between complexes is _____.
    • A. 

      Acceptable

    • B. 

      Computed using 1/2 as fast: 300/2 = 150/minute

    • C. 

      Unreliable

    • D. 

      Computed by counting the number of complexes in a span of 30 large boxes

  • 21. 
    The ______ wave represents atrial depolarization
    • A. 

      S

    • B. 

      P

    • C. 

      R

    • D. 

      U

  • 22. 
    While the duration of the ST segment is not generally of clinical significance, it is an exceedingly important portion of the ECG because of _____.
    • A. 

      The fact that it follows the QRS complex

    • B. 

      Shifts up or down from the baseline

    • C. 

      Upward deflection from the baseline

    • D. 

      The shift away from the ischemic area

  • 23. 
    A QRS measurement of less than _____ seconds indicates a supraventricular pacemaker.
    • A. 

      0.13

    • B. 

      0.14

    • C. 

      0.16

    • D. 

      0.12

  • 24. 
    The area between waves is referred to as _____.
    • A. 

      Back spaces

    • B. 

      Intervals

    • C. 

      Segments

    • D. 

      Cycles

  • 25. 
    A terminal lethal dysrhythmia, a dying heart, is called _____.
    • A. 

      Agonal

    • B. 

      Asystole

    • C. 

      Agonist

    • D. 

      Agogue