EKG Interpretation

~ Exam ~

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This test has 25 questions.

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1. Outermost layer of the heart; consists of parietal and visceral layers?

  a. Epicardium.

  b. Pericardium.

  c. Myocardium.

  d. Epicardium.

2. The normal activity of the heart conducts impulses from the SA node to:

  a. Individual muscle cells.

  b. Groups of muscle cells.

  c. RA node.

  d. RP node.

  e. None of the above.

3. Muscle contraction is dependent upon the availability of calcium and:

  a. Other electrolytes.

  b. Other elements.

  c. Certain drugs.

  d. Digitalis only.

4. This is a symbolic representation of physical force?

  a. Vector.

  b. Plane.

  c. Membrane potential.

  d. Physical tension.

5. This is the state where the cell returns to its polarized state and the polarity reverses?

  a. Reverse polarity.

  b. Inverse polarity.

  c. Depolarization.

  d. Action potential.

  e. Repolarization.

6. _____________ cells have one phase of action potential.

  a. Action cells.

  b. Pacemaker cells.

  c. Depolarized.

  d. Repolarized.

7. Normal flow of current in the heart is primarily from the base to the:

  a. Center.

  b. Apex.

  c. Middle.

  d. Care.

  e. Nucleus.

8. ____________ lies in the wall of the right atrium near the inlet of the superior vena cava?

  a. AV node.

  b. Purkinje network.

  c. SA node.

  d. Bundle of HIS.

9. _____________ records the time sequences and amplitude of the electrical activity of the heart.

  a. EKG machines.

  b. EKG monitors.

  c. EKG paper.

  d. EKG technician.

10. The onset of the QRS complex is indentified as the point where the first wave of the complex just begins to:

  a. Increase.

  b. Decrease.

  c. Deviate.

  d. Return to baseline.

11. ________________ is the first positive deflection in the QRS complex.

  a. QRS complex.

  b. P Wave.

  c. S Wave.

  d. R Wave.

  e. U Wave.

12. The DURATION of the QRS complex is 0.06 to 0.10 second in adults.

  a. 1.00-1.20 second.

  b. 0.08 – 1.00 second.

  c. 0.12 – 0.20 second.

  d. 0.06 – 0.10 second.

13. ______________ represents ventricular repolarization.

  a. QRS complex.

  b. T Wave.

  c. Q Wave.

  d. P Wave.

  e. U Wave.

14. A __________ always follows as QRS complex.

  a. QRS complex.

  b. T Wave.

  c. Q Wave.

  d. P Wave.

  e. U Wave.

15. A __________ indicates that repolarization of the ventricles has occurred.

  a. U Wave.

  b. T Wave.

  c. QRS complex.

  d. P Wave.

  e. T Wave.

16. A lead composed of two electrodes of opposite polarity is called a:

  a. Bipolar lead.

  b. Unipolar lead.

  c. Polarized lead.

  d. Repolarized lead.

17. The NSR implies that all of the beats have a normal:

  a. Pacemaker.

  b. Wave patter.

  c. Ectopic beats.

  d. R Wave.

18. When either the rate or the contour of any of the individual waves is abnormal, the disorder is called:

  a. Pacemaker rhythm.

  b. Ventricular rhythm.

  c. Escape beat.

  d. Inverted wave.

  e. Arrhythmia.

19. The rate increases during inspiration and then slows during expiration, this arrhythmia is called:

  a. Asystole.

  b. PVC’s.

  c. PAC’s.

  d. Sinus arrhythmia.

  e. Sinus tachycardia.

20. The simplest form of treatment for this arrhythmia may be the administration of a sedative or tranquilizer:

  a. PAT.

  b. Sinus tachycardia.

  c. Sinus arrhythmia.

  d. Ventricular fibrillation.

21. This arrhythmia is characterized by a prolonged conduction of the impulses through to the ventricles:

  a. Complete heart block.

  b. First degree block.

  c. Sinus arrest.

  d. Ventricular tachycardia.

22. In this type of second degree block, there is a progressive increase in the PR interval:

  a. Type A.

  b. Type B.

  c. Type I.

  d. Type II.

  e. Mobitz block.

23. This type of heart block is complete or total blockage of all impulses through the AV node:

  a. Type A.

  b. Type B.

  c. Type I.

  d. Second degree.

  e. Third degree.

24. This arrhythmia has delayed ventricular stimulation, usually due to blockage of impulses traveling through the bundle of HIS:

  a. First degree block.

  b. Second degree block.

  c. Third degree block.

  d. Mobitz block.

  e. Bundle branch block.

25. In this arrhythmia, the pacemaker of the heart shifts from the normal SA node to the atria or to the AV Junction.

  a. Wandering atrial pacemaker.

  b. Premature atrial contraction.

  c. Premature ventricular contraction.

  d. Ventricular pacemaker.