CRAT Prep Exam 289 Questions with Verified Answers
1. In addition to recording the ECG and preparing the report, an ECG technician must be able
... [Show More] to:
A. Determine if the tracing is accurate and recognize if interference causes abnormalities during the recording process.
B. Evaluate tracing, recognize abnormal heart rhythms, and report abnormalities to the appropriate health care professionals.
C. Maintain patient records and evaluate tracings.
D. Perform ultrasounds on blood vessels and assist with angioplasty. - CORRECT ANSWER A. Determine if the tracing is accurate and recognize if interference causes abnormalities during the recording process.
2. Monitor technicians record an ECG tracing and place it into the patient record, but they must perform which of the following?
A. Assist the physician with angioplasty.
B. Perform an ultrasound of blood vessels.
C. Prepare an ECG report.
D. Evaluate the tracing and recognize abnormal rhythms. - CORRECT ANSWER D. Evaluate the tracing and recognize abnormal rhythms.
3. Which of the following employees assists the physician with invasive cardiovascular diagnostic tests such as angioplasty, heart surgery, or implantation of artificial pacemakers?
A. ECG technician
B. Cardiovascular technologist
C. Medical assistant
D. Monitor technician - CORRECT ANSWER B. Cardiovascular technologist
4. Which of the following is considered an unethical act but is not necessarily illegal?
A. Reporting blood pressure results of a stress test incorrectly, resulting in a heart attach to the patient.
B. Taking a break when you are required to be viewing multiple patient's heart rhythms.
C. Deciding to keep a $10 bill you find on the patient's bedside table.
D. Keeping the door open to the patient's room when you expose his or her body to perform an ECG. - CORRECT ANSWER D. Keeping the door open to the patient's room when you expose his or her body to perform an ECG.
5. Which of these is the responsibility of an ECG technician?
A. Evaluating electrical tracings on a monitor.
B. Recording the ECG and preparing the report for the physician.
C. Assisting with invasive procedures.
D. Evaluating the rhythm. - CORRECT ANSWER B. Recording the ECG and preparing the report for the physician.
6. Which of the following BEST describes the universal and standards precautions?
A. Universal precautions are practiced on patients in isolation and standard precautions are practiced on all patients.
B. Universal precautions are practiced on all patients with or without an identified infection and stand precautions are only practiced on isolated patients.
C. Universal precautions and standard precautions are the same.
D. Standard precautions combine universal precautions and body substance isolation. - CORRECT ANSWER D. Standard precautions combine universal precautions and body substance isolation.
7. What type of ECG procedure is being performed? - Patient is laying down with leads placed on him while the technician records.
A. Telemetry monitoring
B. Treadmill ECG stress test
C. Transtelephonic ECG monitoring
D. 12-lead ECG - CORRECT ANSWER D. 12-lead ECG
8. A photo features the first ECG machine, which weighed about 600 lbs and took 6 people to operate. Which scientist won the Nobel prize for this invention?
A. Augusta D. Waller
B. Wilhelm Einthoven
C. Sir Thomas Lewis
D. James B. Herrick - CORRECT ANSWER B. Wilhelm Einthoven
9. Which of the following ECG procedures is almost ALWAYS performed in a hospital or in-patient facility?
A. Continuous Monitoring
B. Ambulatory monitoring
C. Treadmill stress test
D. Transtelephonic monitoring - CORRECT ANSWER A. Continuous Monitoring
10. Which of the following is preformed as a routine procedure or during an emergency in the hospital setting?
A. Treadmill stress test
B. 12-lead ECG
C. Ambulatory monitoring
D. Telemetry monitoring - CORRECT ANSWER B. 12-lead ECG
11. Based on the American Heart Association's recommendations for reduction or prevention of heart disease and stroke, which patient has done the most to reduce his risk?
A. Paul Thomas stopped smoking 15 years ago and has maintained a healthy weight by exercising at least 30 minutes every day and eating a well-balanced diet.
B. James Jones has never smoked, he has a sedentary job that has him in the office 6 days a week. Because his work schedule, he gets almost no exercise and east fast food frequently.
C. Carlton Castle stopped smoking last week, but has not increased his physical activity because he becomes short of breath easily. He lives alone and tends to snack rather than eat regular meals.
D. Jack Zeus walks every day and east a fairly well-balanced diet. He has reduced his smoking from one pack per day to a half-pack of low tar cigarettes per day. - CORRECT ANSWER A. Paul Thomas stopped smoking 15 years ago and has maintained a healthy weight by exercising at least 30 minutes every day and eating a well-balanced diet.
12. Which of the following enables lay rescuers to help a person in sudden cardiac arrest?
A. Automatic External Defibrillator (AED)
B. Holter monitor
C. ECG monitor with defibrillator
D. Transtelephonic monitoring - CORRECT ANSWER A. Automatic External Defibrillator (AED)
13. Document clear and complete information to provide continuity of care and protect yourself legally. Which is NOT proper documentation in the patient's medical record?
A. The ECG was performed at 10:00am and Mr. Smith tolerated the procedure well.
B. Mr. Janes complained of check pain during the ECG. Dr. Jackson was notified.
C. I did not perform the ECG because Mr. Harris is an old drunk and is nasty and dirty.
D. The ECG was ordered because Mr. Henderson complained of shortness of breath and check pain. - CORRECT ANSWER C. I did not perform the ECG because Mr. Harris is an old drunk and is nasty and dirty.
14. The ECG tracing provides critical information about the patient and misdiagnosis could result if the tracing is:
A. Too long
B. Inaccurate
C. Filed in the correct patient record
D. Ordered to be run STAT - CORRECT ANSWER B. Inaccurate
15. Which of the following is an unethical act that is also illegal?
A. Acting unprofessionally and being disrespectful towards a patient or co-worker.
B. Reporting the blood pressure results of a stress test incorrectly and resulting in a myocardial infarction to the patient.
C. Exposing the patient's body when preforming any procedure?
D. Skipping a mandatory continuing education class. - CORRECT ANSWER B. Reporting the blood pressure results of a stress test incorrectly and resulting in a myocardial infarction to the patient.
16. You perform an ECG on a patient in contact isolation. You removed the gloves and gown when you left the room. What other actions should you take?
A. No other actions are needed.
B. You should wash your hands.
C. Wash your hands and decontaminate your ECG machine.
D. Wash your hands and put on a clean gown and gloves. - CORRECT ANSWER C. Wash your hands and decontaminate your ECG machine.
17. Of the following health care employees, which is LEAST likely to perform a 12-lead ECG?
A. Respiratory therapist
B. Physician
C. Physical therapist
D. Specially trained nursing assistant - CORRECT ANSWER C. Physical therapist
18. Which of the following is NOT a reason for performing an ECG?
A. To diagnose changed in the heart rhythm.
B. To monitor people with heart conditions.
C. To check for problems with the flow of blood through the heart.
D. To evaluate the effectiveness of cardiac medications. - CORRECT ANSWER C. To check for problems with the flow of blood through the heart.
19. What is the best source of information regarding the specific type of ECG machine you are using?
A. Your supervisor
B. Manufacturer's directions
C. Your co-worker
D. The procedure manual - CORRECT ANSWER B. Manufacturer's directions
20. Identify AED in pictures. - CORRECT ANSWER D
21. Telemedicine monitoring is generally used to evaluate which of the following?
A. ECG tracing over a 24-48 hour period of normal activity.
B. Artificial pacemaker functioning
C. Heart rhythm during a Code Blue emergency
D. Heart rhythm during exercise - CORRECT ANSWER B. Artificial pacemaker functioning
22. Which type of test is being performed? - Patient is walking on a treadmill while an ECG is being performed.
A. Telemetry monitoring
B. Holter monitoring
C. Treadmill stress test
D. 12-lead ECG - CORRECT ANSWER C. Treadmill stress test
23. What can you do to make the ECG a positive experience for the anxious patient?
A. There is nothing you can do if the patient is anxious
B. Clearly explain the procedure and answer the patient's questions.
C. Instruct the patient to discuss the procedure with their physician.
D. Have the nurse tell the patient to cooperate. - CORRECT ANSWER B. Clearly explain the procedure and answer the patient's questions.
24. An abnormal rhythm such as ventricular fibrillation is a medical emergency that needs immediate treatment. In addition to administration of CPR and cardiac medications, the patient will require the use of the:
A. Holter monitor
B. 12-lead ECG
C. Telemetry monitoring
D. Defibrillator - CORRECT ANSWER D. Defibrillator
25. Which might you be required to perform a "STAT" ECG?
A. During telemetry monitoring
B. Early in the morning before surgery
C. During a code red emergency
D. When a patient has check pain or changes in their cardiac rhythm - CORRECT ANSWER D. When a patient has check pain or changes in their cardiac rhythm
26. When should you wash your hands?
A. Between patient contacts
B. Before putting on gloves but not between patients
C. After removing gloves but not between patients
D. After removing gloves but not before putting them on - CORRECT ANSWER A. Between patient contacts
27. ECG are obtained in many locations. At what type of facility is the ECG procedure in this photo being performed? - Patient in hospital gown on a bed.
A. Doctor's office
B. Patient's home
C. Acute care hospital
D. Emergency vehicle - CORRECT ANSWER C. Acute care hospital
28. At what age should an individual begin to have an ECG done as part of a complete physical?
A. 35
B. 40
C. 65
D. 50 - CORRECT ANSWER B. 40
29. Which statement below is correct?
A. Unethical acts are always illegal, but illegal acts are not always unethical.
B. Illegal acts are always unethical, but unethical acts are not always illegal.
C. Illegal acts are always unethical, but ethical acts are always illegal.
D. Illegal acts are always unethical, but unethical acts are not always illegal. - CORRECT ANSWER D. Illegal acts are always unethical, but unethical acts are not always illegal.
30. What type of ECG monitoring system is attached to the patient in this photo in what type of facility is it most commonly applied and removed? - Patient has electrodes placed with the device hooked to their pants.
A. Treadmill test monitor; in a medical office
B. Holter (ambulatory) monitor; in medical office or out-patient setting
C. Telemetry monitor; in medical office
D. Holter (ambulatory) monitor; in a hospital - CORRECT ANSWER B. Holter (ambulatory) monitor; in medical office or out-patient setting
31. The study of electrical activity of the heart is known as:
A. Electrocardiologist
B. Cardiology
C. Electrocardiogram
D. Electrocardiology - CORRECT ANSWER D. Electrocardiology
32. Telemedicine enables physicians to see ECG tracings from patients who live in remote areas via the machine pictured here. What type of monitor is this? - Patient is in an in-home setting with the monitor being hooked up to a landline.
A. Telemetry monitor
B. 12-lead ECG monitor
C. Transtelephonic monitor
D. Holter monitor - CORRECT ANSWER C. Transtelephonic monitor
33. What is the single most important procedure to perform to adhere to universal precautions and prevent the spread of infection?
A. Gloving
B. Isolation procedures
C. Wearing a mask
D. Hand washing - CORRECT ANSWER D. Hand washing
34. Which of the following describes "contractibility"?
A. The ability of the heart muscle cells to shorten in response to an electrical stimulus.
B. The ability of the heart cells to receive and transmit an electrical impulse.
C. The ability of the heart to initiate an electrical impulse without being stimulated by another source.
D. The ability of the heart muscle cells to respond to an impulse or stimulus. - CORRECT ANSWER A. The ability of the heart muscle cells to shorten in response to an electrical stimulus.
35. Which of the following is the outside, thin layer of the heart, containing the coronary arteries?
A. Epicardium
B. Pericardium
C. Myocardium
D. Endocardium - CORRECT ANSWER A. Epicardium
36. On the ECG waveform, what is the beginning of the atrial depolarization to the beginning of the ventricular depolarization, or the time it takes the impulse to travel from the SA node to the AV node?
A. QT interval
B. QRS complex
C. PR interval
D. P wave - CORRECT ANSWER C. PR interval
37. In addition to automaticity, what involuntary system controls the heartbeat?
A. Sympathetic nervous system
B. Parasympathetic nervous system
C. Central nervous system
D. Autonomic nervous system - CORRECT ANSWER D. Autonomic nervous system
38. What is the J point and why is it used?
A. Ventricular depolarization and resulting ventricular contraction; used to measure the heart rate.
B. The end of the QRS complex and ventricular depolarization; used to interpret ECG tracings.
C. Repolarization of the bundle of HIS and purkinje fibers; used to interpret ECG tracings.
D. Period of time from the start of the ventricular depolarization to the end of the ventricular repolarization. - CORRECT ANSWER B. The end of the QRS complex and ventricular depolarization; used to interpret ECG tracings.
39. What does the isoelectric line of the ECG tracing indicate?
A. Positive electrical deflections
B. Depolarization
C. No electrical activity
D. Negative electrical deflections - CORRECT ANSWER C. No electrical activity
40. Which of the following statements is MOST correct regarding pulmonary circulation?
A. Pulmonary circulation is the transportation of blood between the heart and the entire body, excluding the lungs.
B. Pulmonary circulation is the transportation of blood to and from the lungs. Blood is oxygenated in the lungs during pulmonary circulation.
C. Pulmonary circulation is the transportation of blood to and from the lungs. Blood is deoxygenated in the lungs during pulmonary circulation.
D. Pulmonary circulation is the transportation of blood between the heart and the entire body. Blood is oxygenated in the lungs during pulmonary circulation. - CORRECT ANSWER B. Pulmonary circulation is the transportation of blood to and from the lungs. Blood is oxygenated in the lungs during pulmonary circulation.
41. What is the state of cellular stimulation in the heart that causes it to contract?
A. Depolarization
B. Repolarization
C. Polarization
D. Cardiac conduction - CORRECT ANSWER A. Depolarization
42. Which of the following statements BEST describes coronary circulation?
A. Circulation of blood to and from the body
B. Circulation of blood to and from the lungs
C. Circulation of blood to and from the heart muscle
D. Circulation of oxygen throughout the body - CORRECT ANSWER C. Circulation of blood to and from the heart muscle
43. Which of the following sequences correctly identifies the pathways for conduction through the heart?
A. AV node, SA node, bundle of HIS, bundle branches, purkinje fibers
B. SA node, AV node, bundle branches, bundle of HIS, purkinje fibers
C. SA node, AV node, bundle of HIS, purkinje fibers, bundle braches
D. SA node, AV node, bundle of HIS, bundle branches, purkinje fibers - CORRECT ANSWER D. SA node, AV node, bundle of HIS, bundle branches, purkinje fibers
On the ECG waveform, what represents atrial depolarization with resulting atrial contraction?
A. Q wave
B. T wave
C. R wave
D. P wave - CORRECT ANSWER D. P wave
45. On the ECG waveform, what is the ventricular repolarization?
A. S wave
B. P wave
C. Q wave
D. T wave - CORRECT ANSWER D. T wave
46. Which of the following parts of the conduction system conducts the impulses down both sides of the interventricular septum?
A. Bundle branches
B. Purkinje fibers
C. Bundle of HIS
D. AV node - CORRECT ANSWER A. Bundle branches
47. What occurs in the heart during systole and diastole?
A. Systole allows blood to flow into the heart and diastole forces blood out of the heart.
B. Systole forces blood out of the heart and the relaxation of the heart during diastole allows blood into the heart chambers.
C. The heart contracts during both diastole and systole.
D. The heart relaxes during both systole and diastole. - CORRECT ANSWER B. Systole forces blood out of the heart and the relaxation of the heart during diastole allows blood into the heart chambers.
48. On the ECG waveform, what represents the repolarization of the bundle of HIS and purkinje fibers?
A. Q wave
B. U wave
C. P wave
D. S wave - CORRECT ANSWER B. U wave
49: Structure that pumps blood into the aorta to travel through the entire body.
A. Right atrium
B. Left atrium
C. Right ventricle
D. Left ventricle - CORRECT ANSWER D. Left ventricle
50. On the ECG waveform, what is the period of time from the start of the ventricular depolarization to the end of ventricular repolarization?
A. QT interval
B. U wave
C. QRS complex
D. ST segment - CORRECT ANSWER A. QT interval
51. What is the term for the ability of the heart cells to receive and transmit an electrical impulse?
A. Automaticity
B. Excitability
C. Conductivity
D. Contractibility - CORRECT ANSWER C. Conductivity
52. What structure is responsible for the transporting of blood to the lungs?
A. Aorta
B. Pulmonary artery
C. Pulmonary veins
D. Superior vena cava - CORRECT ANSWER B. Pulmonary artery
On the waveform, what does the QRS complex represent?
A. Atrial depolarization
B. Ventricular depolarization and the resulting ventricular contraction
C. Ventricular repolarization
D. Beginning of atrial depolarization to the beginning of ventricular depolarization - CORRECT ANSWER B. Ventricular depolarization and the resulting ventricular contraction
54. Who labeled the waves of the ECG waveform?
A. Lewis
B. Waller
C. Herrick
D. Einthoven - CORRECT ANSWER D. Einthoven
55. Identify the bicuspid valve - CORRECT ANSWER Between the left atrium and the left ventricle.
56. Which of the following is the BEST definition for "automaticity"?
A. The ability of the heart to initiate an electrical impulse without being stimulated by another source.
B. The ability of the heart cells to receive and transmit an electrical impulse.
C. The ability of the heart muscle to shorten in response to an electrical stimulus.
D. The ability of the heart muscle cells to respond to an impulse or stimulus. - CORRECT ANSWER A. The ability of the heart to initiate an electrical impulse without being stimulated by another source.
57. Which statement best describes what is happening in the picture? - blood flow within the heart.
A. The heart muscle contracts, creating pressure to open the pulmonary and aortic valves.
B. Oxygenated blood from the left ventricle travels through the aorta to the coronary arteries.
C. The pumping cycle of the heart muscle is controlled by electrical impulses that are initiated and transmitted through the heart.
D. Blood from the body returns to the heart via the superior and inferior vena cava. - CORRECT ANSWER D. Blood from the body returns to the heart via the superior and inferior vena cava.
58. What are the phases of the cardiac conduction system, and what action occurs in the heart during each phase?
A. Systole- relaxation; diastole- contraction
B. Conduction- contraction; circulation- relaxation
C. Systole- contraction; diastole- relaxation
D. Relaxation- heart resting; contraction- heart contracting - CORRECT ANSWER C. Systole- contraction; diastole- relaxation
59. Which of the following BEST describes "excitability"?
A. The ability of the heart muscle cells to shorten in response to an electrical impulse.
B. The ability of the heart muscle cells to respond to an impulse or stimulus.
C. The ability of the heart cells to receive and transmit an electrical impulse.
D. The ability of the heart to initiate an electrical impulse without being stimulated by another source. - CORRECT ANSWER B. The ability of the heart muscle cells to respond to an impulse or stimulus.
60. What is the function of the heart?
A. Circulate blood to and from tissues
B. Supply nutrients
C. Remove carbon dioxide and waste
D. Supply oxygen - CORRECT ANSWER A. Circulate blood to and from tissues
61. What is the average heart rate for an adult?
A. 100-110 bpm
B. 40-60 bpm
C. 50-60 bpm
D. 60-100 bpm - CORRECT ANSWER D. 60-100 bpm
62. Which of the following statements if TRUE regarding the role of the autonomic nervous system (ANS) in controlling the heartbeat?
A. The ANS is involuntary. The sympathetic division increases the heart rate and the parasympathetic division decreases the heart rate.
B. The ANS in voluntary. The sympathetic division increases the heart rate and the parasympathetic division decreases the heart rate.
C. The ANS is involuntary. The sympathetic division decreases the heart rate and the parasympathetic division increases the heart rate.
D. The ANS is voluntary. The sympathetic division decreases the heart rate and the parasympathetic division increases the heart rate. - CORRECT ANSWER A. The ANS is involuntary. The sympathetic division increases the heart rate and the parasympathetic division decreases the heart rate.
63. Which of the following is the pacemaker of the heart?
A. AV node
B. SA node
C. Bundle of HIS
D. Purkinje fibers - CORRECT ANSWER B. SA node
64. Trace the pathway for the transport of the blood during systemic circulation, starting with oxygenated blood from the lungs.
A. Superior and inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, pulmonary artery, lungs, pulmonary veins, and left atrium.
B. Left atrium, mitral valve, left ventricle, aortic semilunar valve, aorta, through the body, superior and inferior vena cava.
C. Left atrium, mitral valve, left ventricle, pulmonary artery, through the body, pulmonary vein, superior and inferior vena cava
D. Right atrium, mitral valve, right ventricle, aortic semilunar valve, aorta, through the body, superior and inferior vena cava. - CORRECT ANSWER B. Left atrium, mitral valve, left ventricle, aortic semilunar valve, aorta, through the body, superior and inferior vena cava.
65. On the ECG waveform, what is the period of time between ventricular depolarization and the beginning of ventricular repolarization?
A. QT interval
B. PR interval
C. ST segment
D. QRS complex - CORRECT ANSWER C. ST segment
66. Each heartbeat consists of the contraction and relaxation of the heart muscle. What is this called?
A. The cardiac cycle
B. Systole
C. Diastole
D. Deoxygenation - CORRECT ANSWER A. The cardiac cycle
67. Which of the following methods could you use to estimate the heart rate of a patient with a regular rhythm when the ECG is run at 25 mm/sec?
A. Count the number of complete complexes on a 6 second tracing and divide by 10.
B. Count the number of large boxes between two R waves and divide that number into 300.
C. Count the number of boxes on a 6 second strip and divide by 300.
D. Count the number of complexes between the two R waves and divide into 300. - CORRECT ANSWER B. Count the number of large boxes between two R waves and divide that number into 300.
68. What occurs during signal processing inside the ECG machine?
A. The electrical impulse is recorded and printed.
B. The electrical impulse is sent to the oscilloscope.
C. There is no signal processing inside the ECG machine.
D. The electrical impulse is amplified and converted into mechanical actions on the display. - CORRECT ANSWER D. The electrical impulse is amplified and converted into mechanical actions on the display.
69. Using the 1500 method, you counted 22 small squares between two R waves. What is the patient's heart rate?
A. 60
B. 82
C. 50
D. 68 - CORRECT ANSWER D. 68
1500/22
70. How are lead wires coded?
A. Color and letter
B. Color only
C. Letter and number
D. Color and number - CORRECT ANSWER A. Color and letter
71. What are the small sensors that are placed on the skin the receive the electrical activity from the heart called?
A. Leads
B. Augmented leads
C. ECG wires
D. Electrodes - CORRECT ANSWER D. Electrodes
72. What is the most common output for a 12-lead ECG?
A. Printed format
B. Oscilloscope
C. Computer screen
D. Sensors - CORRECT ANSWER A. Printed format
73. Which two types of leads are unipolar? (measure electrical activity in one direction only).
A. Standard and augmented leads
B. Chest and augmented leads
C. Chest and standard leads
D. Check and precordial leads - CORRECT ANSWER A. Standard and augmented leads
74. When calculating heart rates, which method is the only one to use for irregular?
A. R-R method
B. 1500 method
C. 6 second method
D. 300 method - CORRECT ANSWER C. 6 second method
75. What are three types of leads used for the 12-lead ECG?
A. Standard, limb, and chest leads
B. Limb, augmented, and bipolar leads
C. Standard, augmented, and chest leads
D. Standard, chest, and bipolar leads - CORRECT ANSWER C. Standard, augmented, and chest leads
76. When placed correctly, standard limb leads form the Einthoven triangle. These leads are also known as what type of lead?
A. Augmented
B. Unipolar
C. Negative
D. Bipolar - CORRECT ANSWER D. Bipolar
77. What of the following is the correct label for the augmented lead that usually produces a negative deflection?
A. aVR
B. aVL
C. aVF
D. aVC - CORRECT ANSWER A. aVR
78. On the ECG graph paper, what do the two large boxes represent in voltage?
A. 1 millivolt
B. 1 centimeter
C. 0.1 millivolt
D. 0.5 millivolt - CORRECT ANSWER A. 1 millivolt
79. Which of the following methods should you use to determine the approximate heart rate of a patient with an irregular rhythm when the ECG is run at 25 mm/sec?
A. Count the number of large boxes between two R waves and divide into 300.
B. Count the number of complete complexes on a 6 second tracing and multiply by 10.
C. Count the number of boxes on a 6 second strip and divide by 300.
D. Count the number of complex between two R waves and divide by 300. - CORRECT ANSWER B. Count the number of complete complexes on a 6 second tracing and multiply by 10.
80. What is the main difference between single and multi-channel ECG machines?
A. The single-channel ECG machine is able to record more than one lead tracing at a time.
B. The multi-channel ECG machine is used mostly in physician's offices.
C. The multi-channel ECG machine is able to record more than one lead tracing at a time.
D. The multi-channel tracing is always mounted. - CORRECT ANSWER C. The multi-channel ECG machine is able to record more than one lead tracing at a time.
81. At the normal paper speed, how much time do the "five heavy lines" on the ECG paper represent?
A. 0.04 seconds
B. 1 minute
C. 25 mm
D. 1 second - CORRECT ANSWER D. 1 second
82. At the normal paper speed of 25 mm/sec, what does the smallest box on the ECG paper represent in time and voltage?
A. 0.04 seconds, 0.1 mV
B. 0.20 seconds, 0.5 mV
C. 5 seconds, 1 mV
D. 0.5 seconds, 0.5 mV - CORRECT ANSWER A. 0.04 seconds, 0.1 mV
83. What is the advantage of using standard grid ECG paper?
A. Standard grid paper is more expensive than dot matrix.
B. Standard grid paper requires less ink.
C. Standard grid paper is easier to read.
D. Standard grid paper produces sharper photocopies. - CORRECT ANSWER D. Standard grid paper produces sharper photocopies.
84. There are three important guidelines to follow for proper use of disposable electrodes. Which of the following is NOT a guideline for using disposable electrodes?
A. Keep unused electrodes in a sealed plastic bag to prevent them from drying out.
B. Check the expiration date on the package before use.
C. Be certain to use the same amount of gel on each electrode during the tracing.
D. Use disposable electrodes for only one ECG, with few exceptions. - CORRECT ANSWER C. Be certain to use the same amount of gel on each electrode during the tracing.
85. How many lead wires are used to record a 12-lead ECG?
A. 12
B. 10
C. 6
D. 4 - CORRECT ANSWER B. 10
86. What does the ECG machine measure?
A. Blood flow through the heart
B. Electrical impulses produced by the heart's conduction system.
C. Electrical impulses produced by the brain and transmitted to the heart
D. Blood flow to the coronary arteries - CORRECT ANSWER B. Electrical impulses produced by the heart's conduction system.
87. Which control on the ECG machine regulates how fast or slow the paper runs during the procedure?
A. Artifact filter
B. Gain control
C. LCD display
D. Speed control - CORRECT ANSWER D. Speed control
88. Which method (s) of calculating the heart rate can you used for a patient with an irregular rhythm?
A. R-R method
B. Either the 6 second method or the 1500 method
C. Only the 6 second method
D. Only the 1500 method - CORRECT ANSWER B. Either the 6 second method or the 1500 method
89. What do the horizontal and vertical lines represent on the ECG graph paper?
A. Horizontal= PR interval; vertical= voltage
B. Horizontal= voltage; vertical= time
C. Horizontal= time; vertical= QRS interval
D. Horizontal= time, vertical= voltage - CORRECT ANSWER D. Horizontal= time, vertical= voltage
90. Which of the following is NOT a function of the ECG machine?
A. Computerized measurement and analysis of the tracing.
B. Validation of ECG interpretation
C. Interpretation and storage of ECG results
D. Printing the ECG tracing - CORRECT ANSWER B. Validation of ECG interpretation
91. What is the usual setting for the artifact filter to reduce artifact due to muscle tremor?
A. 25 mm/sec
B. 150 Hz
C. 40 Hz
D. 50 mm/sec - CORRECT ANSWER C. 40 Hz
92. The ECG report is part of the patient's medical record and must be maintained for how many years?
A. Seven years
B. Ten years
C. Three years
D. Fifteen years - CORRECT ANSWER A. Seven years
93. What part of the ECG machine serves as receiving device for the input function?
A. Transistors
B. Oscilloscpope
C. Sensors
D. Resistors - CORRECT ANSWER C. Sensors
94. Which control on the ECG machine regulates the output or height of the ECG waveform?
A. LCD display
B. Gain control
C. Speed control
D. Artifact filter - CORRECT ANSWER B. Gain control
95. Which of the following is NOT a consideration for handling and storing printed ECGs?
A. They are heat and pressure sensitive
B. They require no special handling and can be stored for up to 50 years.
C. Marks on the ECG tracing make it difficult to read.
D. They should be stored away from substances such as alcohol, plastic, sunlight, and x-ray film. - CORRECT ANSWER B. They require no special handling and can be stored for up to 50 years.
96. What type of electrode is most commonly used for an ECG?
A. Disposable
B. Reusable
C. Silver
D. Gels and pastes - CORRECT ANSWER A. Disposable
97. Augmented leads are unipolar. Why are they called augmented leads?
A. They measure current toward only one electrode
B. The ECG machine increases the size of the tracing
C. They measure current toward two electrodes
D. They are named for Augmen Lewis, who discovered them - CORRECT ANSWER B. The ECG machine increases the size of the tracing
98. What is the standard rate for the data run during the ECG procedure?
A. 50 mm/sec
B. 25 mm/sec
C. 40 mm/sec
D. 20 mm/sec - CORRECT ANSWER B. 25 mm/sec
99. Where are the precordial leads located?
A. Three on the chest, two on the arms
B. On the arms and legs
C. On the arms and lower abdomen
D. On the chest - CORRECT ANSWER D. On the chest
100. You just performed a "STAT" ECG on Mrs. Stephenson. What should you do with the results?
A. Give it directly to your supervisor or other licensed practitioner or place it on the chart and inform them that it has been completed.
B. Place it directly on the chart and take a second copy back to the ECG lab.
C. Place it in a box at the nursing station and inform your supervisor that it has been completed.
D. Place it in the consulting physician's box and inform him or her htat it has been completed. - CORRECT ANSWER A. Give it directly to your supervisor or other licensed practitioner or place it on the chart and inform them that it has been completed.
101. What is the most important consideration when performing an ECG on a patient two days in a row?
A. Keep the electrodes at the same site by leaving them in place after the first ECG.
B. The electrodes should be places at the same site or as close as possible in order for the tracings to be evaluated correctly.
C. Use the same ECG machine for each ECG in order for them to be evaluated correctly.
D. The lead wire cables and electrodes should remain attached overnight so the tracing will be accurate. - CORRECT ANSWER B. The electrodes should be places at the same site or as close as possible in order for the tracings to be evaluated correctly.
102. If you were performing an ECG on a patient who has had his left lower leg amputated, where should you put the leg electrodes?
A. Place both the left and right electrodes on the lower abdomen.
B. Place the left electrode on the upper left and the right leg electrode on the lower leg.
C. Place both the left and right electrodes on the upper legs close to the trunk.
D. Place both electrodes on the chest below the chest electrodes. - CORRECT ANSWER C. Place both the left and right electrodes on the upper legs close to the trunk.
103. Which of the following statements is TRUE regarding the room or machine used for an ECG?
A. The room should be away from electrical equipment and x-ray machines; electrical equipment should be turned off.
B. The machine should be placed directly beside other electrical equipment to avoid interference.
C. All electrical equipment should be turned off and the room should be closed to other diagnostic rooms.
D. The room should always be away from electrical and all electrical equipment should be turned on. - CORRECT ANSWER A. The room should be away from electrical equipment and x-ray machines; electrical equipment should be turned off.
104. If all required information is not on the form, what should you do?
A. Refuse to perform the ECG.
B. Ask the patient or obtain the information from the medical record.
C. Call the physician to obtain the information.
D. Ask the patient's visitor for the information. - CORRECT ANSWER B. Ask the patient or obtain the information from the medical record.
105. Your patient, Mrs. Ling, has had a mastectomy. How will this affect the ECG procedure?
A. The leads should be placed on the opposite side of the chest and the change should be recorded on the report.
B. The results may be altered due to the mastectomy, so place the leads on the back if necessary.
C. No changes need to be made to the ECG procedure; a mastectomy will not alter the results.
D. No changes need to be made to the ECG procedure; just note that the patient has had a mastectomy on the report. - CORRECT ANSWER D. No changes need to be made to the ECG procedure; just note that the patient has had a mastectomy on the report.
106. You must locate the angle of Louis and the second rib that is adjacent to this landmark when placing the chest electrodes. Then count down to the 4th intercostal space. Which lead do you place on the left sternal border?
A. V2
B. V1
C. V4
D. V3 - CORRECT ANSWER A. V2
107. The baseline for the ECG you just performed is drifting off center. This is called wandering baseline. Which of the following is NOT a cause for this type of artifact?
A. Tension on the electrode lead wires.
B. Adequate electrode gel.
C. Dirty electrodes.
D. Poor skin preparation. - CORRECT ANSWER B. Adequate electrode gel.
108. Which of the following MOST accurately describes the placement of the V6 electrode?
A. Fourth intercostal space at the right of the sternal border.
B. Fifth intercostal space on the left midclavicular line.
C. On the left anterior axillary line.
D. On the midaxillary in line with V4 - CORRECT ANSWER D. On the midaxillary in line with V4
109. If the chest of the pediatric patient is too small to accommodate all the leads for an ECG, what should you do?
A. Remove the lead for V3 and note it on the ECG report.
B. Move lead V2 to the right side of the chest at the same location as V3.
C. Move lead V2 to the right side of the chest at the same location as the left.
D. Move lead V3 to the right side of the chest at the same location as the left. - CORRECT ANSWER D. Move lead V3 to the right side of the chest at the same location as the left.
110. What is the most frequent problem that can occur during an ECG and what is it's cause?
A. Unwanted marks known as artifact, caused by activity other than electrical activity.
B. Unwanted marks on the ECG known as somatic tremors, caused by another source of electrical activity.
C. Unwanted marks known as artifact, caused by another source of activity or electrical activity.
D. Unwanted marks on the ECG known as AC interference, caused by the electrical activity of the heart. - CORRECT ANSWER C. Unwanted marks known as artifact, caused by another source of activity or electrical activity. [Show Less]