EKG review

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ripmom30
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EKG review
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2013-06-28 17:37:27
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  1. if the QRS complexes are close together, the heart rate is:
    a. slow
    b. normal
    c. profoundly slow
    d. fast
    d. fast
  2. where does deoxygenated blood enter the heart?
    a. left strium
    b. left ventricle
    c. right atrium
    d. right ventricle
    c. right atrium
  3. to use "counting the small square methods", you
    a. count the number of small squares between the peaks of two consecutive R waves and then compare that to the other R-R intervals
    b. find an R wave that falls on a bold line and begin counting small squares
    c. count the number of small squares in a 6-second section of the ECG tracing
    d. divide by 1500 the number of QRS complexes in each 6-second section of the ECg tracing
    a. count the number of small squares between the peaks of two consecutive R waves and then compare that to the other R-R intervals
  4. which of the following is an important part of the patient education when preparing a patient to wear a Holter monitor?
    a. wear it even in the shower for an accurate reading
    b. remove the recorder from it case
    c. keep a diary of the times of all symptomatic activities and emotions
    d. depress the even maker every hour on the half hour
    c. keep a diary of the times of all symptomatic activities and emotions
  5. PR segments are commonly described as:
    a. flat
    b. rounded
    c. asymmetrical
    d. biphasic
    a. flat
  6. the T wave represents
    a. ventricular depolarization
    b. atrial repolarization
    c. ventricular repolarization
    d. abnormal electrical activity
    c. ventricular repolarization
  7. which of the following is the lead that records electrical activity between the right arm and the left leg?
    a. lead I
    b. AVL
    c. AVF
    d. lead II
    d. lead II
  8. which 3 leads are referred to as the standard limb leads?
    a. I, II, III
    b. aVR, aVL, aVF
    c. I, II, aVL
    d. V1, V2, V6
    a. I, II, III
  9. the PR interval represents:
    a. repolarization of the ventricles
    b. depolarization of the heart through AV mode, Bundle of his, Purkinje fibers
    c. depolarization of the atria
    d. repolarization of the atria
    c. depolarization of the atria
  10. the most common symptoms of cardiac dysrhythmias is/are:
    a. low blood pressure
    b. lightheadness
    c. shortness of breath
    d. palpitations
    d. palpitations
  11. which of the following is a reason to have an ECG?
    a. detects myocardial ischemia
    b. estimates damage for an MI
    c. evaluates arrhythmia
    d. all of the above
    d. all of the above
  12. the standard electrocardiogram shows the heart's electrical activity from different angles through 'leads'. how many leads are recorded?
    a. 5
    b. 7
    c. 10
    d. 12
    d. 12
  13. which of the following would need to be recorded in the Holter monitor activity diary?
    a. eating meals
    b. bowel movements
    c. time of sleep
    d. all of the above
    d. all of the above
  14. an irregular rhythm:
    a. is considered normal
    b. is caused only by a few conditions
    c. produces a fast heart rate
    d. should be properly investigated
    d. should be properly investigated
  15. during normal heart activity, which structure is the primary pacemaker?
    a. bundle of his
    b. SA node
    c. AV node
    d. AV junction
    b. SA node
  16. a permanent pacemaker is implanted in a surgically created pocket beneath the skin in the patient's:
    a. abdomen
    b. chest
    c. neck
    d. upper thighs
    b. chest
  17. the heart contracts in this fashion:
    a. bundles branches, AV node, SA node
    b. AV node, bundle branches, SA node
    c. SA node, AV node, bundle branches
    d. bundle branches, SA node, AB node
    c. SA node, AV node, bundle branches
  18. the treatment for conduction defects may include:
    a. coronary bypass
    b. cardio tonic
    c. insertion of a pacemaker
    d. angioplasty
    c. insertion of a pacemaker
  19. which of the following is the most common type of artifact?
    a. somatic tremor
    b. AC interference
    c. wandering baseline
    d. interrupted baseline
    a. somatic tremor
  20. which of the following may cause somatic terror?
    a. too much electrolyte
    b. cable across patient's lap
    c. corroded sensors
    d. parkinson's disease
    d. parkinson's disease
  21. one cardiac cycle (heartbeat) takes approximately how long?
    a. 0.2 seconds
    b. 0.4 seconds
    c. 0.6 seconds
    d. 0.8 seconds
    d. 0.8 seconds
  22. another name for V leads is:
    a. precordial
    b. augmented
    c. standard
    d. limb
    a. precordial
  23. the heart's ability to create its own electrical impulse is known as:
    a. conductivity
    b. contractility
    c. automaticity
    d. excitability
    c. automaticity
  24. "Bipolar leads' means that:
    a. one electrode is placed on the chest and the machine arbitrarily places on behind the person
    b. both positive and negative electrodes are placed on the patient's body
    c. Einthoven's triangle is not used
    d. one of the limbs is used while the machine arguments the rhythm
    b. both positive and negative electrodes are placed on the patient's body
  25. the Einthoven's triangle is formed by using which of the following placement sites?
    a. right arm, left arm, left leg
    b. right arm, left leg, right leg
    c. right arm, middle of the chest, left leg
    d. none of the above
    a. right arm, left arm, left leg
  26. when applying chest leads, V4 is placed (ICS=Intracostal scape):
    a. midway between V3 and V5
    b. at the fourth ICS, right sterna boarder
    c. at the fifth ECS, left midclavicular line
    d. at the fourth ICS, left sterna boarder
    c. at the fifth ECS, left midclavicular line
  27. what is the rate of a normal sinus rhythm?
    a. 60-100
    b. 50-90
    c. 100-150
    d. 60-80
    a. 60-100
  28. shat sinus rhythm has a rate of less than 60 beats per minute?
    a. sinus tachycardia
    b. sinus bradycardia
    c. sinus dysrythmia
    d. sinus rhythm
    b. sinus bradycardia
  29. if a QRS complex measures 0.12 seconds or wider, it most likely indicates:
    a. normal ventricular conduction
    b. delayed ventricular conduction
    c. increased delay at the AV node
    d. myocardial infarction
    b. delayed ventricular conduction
  30. what is a common sign of low cardiac output?
    a. high blood pressure
    b. alert and oriented
    c. increased perfusion of vital organs
    d. low blood pressure
    d. low blood pressure
  31. what is the normal, inherent rate for the AV junction?
    a. 60-100 beats per minute
    b. 40-60 beats per minute
    c. 100-160 beats per minute
    d. 20-40 beats per minute
    b. 40-60 beats per minute
  32. what is the heart rate range for functional escape rhythm:
    a. 20-40 beats per minute
    b. 100-150 beats per minute
    c. 40-60 beats per minute
    d. 60- 100 beats per minute
    c. 40-60 beats per minute
  33. the main responsibility of the MA is to:
    a. determine whether an abnormal heart rhythm occurs
    b. view the ECG tracing
    c. alert the healthcare profession
    d. all of the above
    d. all of the above
  34. the PR interval is usually:
    a. 0.06 to 0.10 seconds
    b. 0.12 to 0.20 seconds
    c. greater than .20 seconds
    d. less than 0.06 seconds
    b. 0.12 to 0.20 seconds
  35. which part of the ECG tracing represents the repolarization of the Purkinje fibers?
    a. T wave
    b. PR interval
    c. U wave
    d. P wave
    a. T wave
  36. what part of the ECG tracing represents the time from the start of the atrial activity to the start of ventricular activity?
    a. WRS complex
    b. J point
    c. QT interval
    d. PR interval
    d. PR interval
  37. the heart is contained in a sac also known as:
    a. endocardium
    b. pericardial sac
    c. myocardial sac
    d. fluid sac
    b. pericardial sac
  38. the horizontal reading on the ECG paper represents ________ and the vertical readings represent _________.
    a. voltage, time
    b. time, height
    c. time, voltage
    d. voltage, millivolts
    c. time, voltage
  39. marks on the ECG tracing cause by another source of activity are:
    a. asystole
    b. conduction marks
    c. artifacts
    d. wandering baseline
    c. artifacts
  40. somatic tremors are caused by:
    a. electrical current leak
    b. tracing drifts away from center
    c. muscle movement
    d. contact with another electrical device
    c. muscle movement
  41. you noticed a wandering baseline of the ECG tracing. What measure(s) should you do to correct the problem?
    a. apply new electrodes
    b. reposition the electrodes
    c. ensure that the wires are not crossed
    d. all of the above
    d. all of the above
  42. you notice the leads I and II have a lot of artifact while recording a 12-lead ECG. which electrode is probably not placed appropriately?
    a. right arm
    b. left arm
    c. left leg
    d. none of the above
    a. right arm
  43. which of the following are ways to correct AC interference?
    a. unplug electrical equipment, move bed away from the wall
    b. apply electrodes securely, remove tension from lead wires
    c. have patient place hands under his/her buttocks, remind patient not to move
    d. replace loose electrodes and have the patient turn slightly to the side
    a. unplug electrical equipment, move bed away from the wall
  44. what is the major health risk for patients who have atrial fibrillation?
    a. hypertension
    b. thrombus formation and embolization
    c. bundle branch block
    d. bleeding problems
    b. thrombus formation and embolization
  45. what atrial dysrhythmia has capital "F" waves and a classic sawtooth or picket or fence appearance?
    a. PACs
    b. multifocal arterial tachycardia
    c. atrial fibrillation
    d. atrial flutter
    d. atrial flutter
  46. what is the normal, inherent rate for the AV junction?
    a. 60-100 beats per minute
    b. 40-60 beats per minute
    c. 100-160 beats per minute
    d. 20-40 beats per minute
    b. 40-60 beats per minute
  47. the criterion needed to classify the dysrhythmia as a supraventricular tachycardia is:
    a. heart rate between 150 and 350 beats per minute
    b. a wide QRS complex
    c. a clear, easily identifiable P wave with the entire wave visualized
    d. atrial and ventricular rates are not the same
    a. heart rate between 150 and 350 beats per minute
  48. P-P intervals measures as ________ with all heart block dysrhythmias:
    a. irregular
    b. absent
    c. regular
    d. no P waves with heart block
    c. regular
  49. QRS complexes that measures 0.12 seconds or greater with a rate between 20 and 40 beats per minute indicates the impulses causing ventricular depolarization are coming from the:
    a. SA node
    b. interatrial pathways
    c. AV node
    d. purkinje fibers
    d. purkinje fibers
  50. ventricular fibrillation is typically described as __________.
    a. regular
    b. absent
    c. chaotic
    d. none of the above
    c. chaotic
  51. which ventricular dysrhythmia has a heart rate between 20-40 beats per minute?
    a. idioventricular
    b. ventricular tachycardia
    c. ventricular fibrillation
    d. agonal
    a. idioventricular
  52. Mr. Casler is having and ambulatory (Holter) monitor attached and asks how long it will remain in place. Your answer would be:
    a. 2-4 hours
    b. 24-48 hours
    c. up to 30 days
    d. only while you are in the office
    b. 24-48 hours
  53. your patient asks, " why am i having this ambulatory monitor attached when i just had an ECG yesterday?" what would your best answer be?
    a. ambulatory monitors records your heart activity in a different way than an ECG
    b. your doctor wants to find out what is happening to your heart during a longer period than an ECG
    c. it is necessary to monitor your heart while you are walking. that is why it is called ambulatory monitoring
    d. i cannot answer the question. please ask your doctor
    b. your doctor wants to find out what is happening to your heart during a longer period than an ECG
  54. what is your most important responsibility during exercise electrocardiography?
    a. providing for safety
    b. applying the leads
    c. monitoring the ECG tracing
    d. taking the patient's blood pressure
    a. providing for safety

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