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Exam & Evaluation (ECG Strip Identification and Evaluation)
 
Questions: Please respond to following statements.

1 In a normal heart, the pacemaker is the:
  AV node
  sinoatrial node
  purkinje fibers
  left bundle branch
2 Ectopy is caused by an irritablility in the heart muscle.
True     False
3 Parasympathetic stimulation of the heart can:
  Increase the heart rate
  Increase contractility of the heart
  Decrease the heart rate
4 One way of calculating heart rate from a rhythm strip is to count the number of R waves in a 6 second strip and multiply by 10.
True     False
5 The QRS complex indicates:
  Ventricular depolarization
  Ventricular repolarization
  Atrial depolarization
  an abnormal conduction pathway
6 Normal QRS duration is .15 - .25 seconds.
True     False
7 It is normal to see sinus bradycardia in athletes during sleep.
True     False
8 Sinus Tachycardia may be seen as a response to:
  Anxiety
  Pain
  Fever
  All of the above
9 P waves of varying morphology are seen in a wandering atrial pacemaker rhythm.
True     False
10 Which of the following dysrhythmias presents on ECG a wide and abnormally shaped QRS that occurs randomly or following every normal beat or every second normal beat?
  Atrial fibrillation
  Premature ventricular contractions
  Ventricular tachycardia
  None of the above
11 Normal heart rate for the junctional pacemaker is 80-90 bpm.
True     False
12 In a third degree heart block the P waves are "married" to the QRS complexes.
True     False
13 A first degree heart block is characterized by:
  A prolonged PR interval
  A rapid rate
  A PR interval that gets progressively longer until one P wave is dropped.
  All of the above
14 A second degree heart block type II is likely to degrade into a higher degree heart block.
True     False
15 Which dysrhythmia presents on ECG with three or more ventricular beats in a row, wide and bizarre QRS complexes and between 100 to 220/bpm or more?
  Atrial fibrillation
  Ventricular tachycardia
  Premature ventricular contractions
  None of the above
16 Which dysrhythmia presents on ECG with no visible P waves, normal QRS and irregularly irregular rhythm?
  Atrial fibrillation
  Ventricular tachycardia
  Premature ventricular contractions
  All of the above
17 An appropriate nursing diagnosis for the symptomatic patient with cardiac dysrhythmia is alteration in cardiac output.
True     False
18 Providing a restful environment is an appropriate nursing intervention for the patient with cardiac dysrhythmias.
True     False
19 Patient teaching activities include all of the following except:
  Teaching the patient to report chest pain and/or dyspnea
  Teaching the patient to "bear down" or hold breath during bowel movement
  Instructing a patient how to self administer medications
  Instructing a patient about a healthy diet
20 Providing psychosocial support to the family members is an appropriate nursing intervention.
True     False
21 Lead II is the best lead for viewing ventricular activity.
True     False
22 The QT interval represents the time it takes the ventricles to depolarize and then repolarize.
True     False
23 Skin preparation prior to ECG lead placement includes:
  hair clipping
  soap and water if skin is oily
  Rubbing with a 2 x 2 gauze
  All of the above
24 V1 lead is available with a 3 lead system.
True     False
25 Lead V1 is the best lead to distinguish between a right bundle branch block and a left bundle branch block.
True     False
26 A patient is experiencing a sinus arrhythmia. It is important that treatment begins immediately.
True     False
27 Causes of Torsade de pointes includes all of the following except:
  Hypokalemia
  Myocardial ischemia
  Suppression of ventricular rhythm
  Drugs which lengthen the QT interval
28 The Hallmark of Torsade de pointes is:
  Slow, regular rhythm
  Upward and downward deflection of the QRS complexes around the baseline
  Lengthening of the PR interval
  Shortening of the ST segment
29 Artifact can be caused by muscle tremors.
True     False
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