Question 1

AC interference can be prevented by ____.

Accepted Answer

A)   keeping the patient warm to prevent shivering
B)   making sure lead wires are not crossed and following the contour of the body
C)   making certain that a lead has not been disconnected from the electrode
D)   preparing the patient's skin adequately
E)   avoiding the use of paper clipsF) C) and D)
G) A) and B)

Question 2

Which of the following refers to the contraction of the ventricles following depolarization?

Accepted Answer

A)   QRS complex
B)   T wave
C)   Q-T interval
D)   S-T segment
E)   P waveF) C) and D)
G) A) and B)

Question 3

Gillian is a cheerful, active teenager who is having an ECG as part of a physical required by her school to participate in cheerleading activities. You explain that she needs to remain very still while you record the ECG. You begin the tracing, as shown in the picture. Although Gillian remains still, when she sees the look on your face, she asks, "What's wrong?" What abnormality is visible in lead V6, and what is your best choice of action?

Accepted Answer

A)   Somatic interference; ask Gillian again to remain still
B)   Wandering baseline; check for loose electrodes
C)   AC interference; turn off nearby electrical equipment
D)   Flat line; check pulse and respirations and begin CPR
E)   Flat line; look for loose or disconnected wiresF) C) and D)
G) B) and D)

Question 4

If a patient is uncomfortable lying flat on the examining table for an ECG test, he can be placed in the ____.

Accepted Answer

A)   prone position
B)   supine position
C)   Fowler's position
D)   Sims' position
E)   proctologic positionF) C) and D)
G) B) and E)

Question 5

The peaks and valleys of the electrical impulses responsible for the cardiac cycle are called ____.

Accepted Answer

A)   electrodes
B)   styluses
C)   leads
D)   deflections
E)   probesF) B) and D)
G) C) and D)

Question 6

A(n) ________ is a beat that originates from the ventricles of the heart, occurs early in the cycle, and is followed by a pause before the next cycle.

Accepted Answer

premature ...

Question 7

The urgent care center where you work is being remodeled, and the room usually used for obtaining ECGs is currently unavailable. The ECG equipment has been moved around the corner to the room next to the X-ray room. When you begin your first patient ECG of the day, the tracing looks as shown in the figure. What problem is present and how can you fix it?

Accepted Answer

A)   Extraneous marks; avoid using paper clips on the graph paper
B)   Somatic interference; ask the patient to be very still while you record the ECG
C)   Wandering baseline; check and reconnect loose leads
D)   Flat line; check for crossed wires or loose leads
E)   AC interference; move the ECG equipment to a room farther from other electric equipmentF) C) and D)
G) A) and B)

Question 8

Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle?

Accepted Answer

A)   Electrode
B)   Electrocardiogram
C)   Electrocardiograph
D)   Electroencephalograph
E)   ElectroencephalogramF) None of the above
G) C) and D)

Question 9

Which of the following represents the time between contraction of the ventricles and recovery?

Accepted Answer

A)   P wave
B)   Q wave
C)   S-T segment
D)   P-R interval
E)   QRS complexF) B) and D)
G) C) and D)

Question 10

You are attempting to record an ECG for Mr. Potter, a 72-year-old patient who has Parkinson's disease. Knowing this, you automatically place the limb electrodes close to the trunk. However, the tracing looks as shown in the picture. What artifact is present and what can you do to fix it?

Accepted Answer

A)   Extraneous marks; avoid using paper clips on the graph paper
B)   Somatic interference; wait until Mr. Potter's tremors subside
C)   wandering baseline; check for loose electrodes
D)   AC interference; turn off nearby electrical equipment
E)   Flat line; check pulse and respiration, then begin CPRF) B) and C)
G) A) and C)

Question 11

Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?

Accepted Answer

A)   Repolarization
B)   Deflection
C)   Depolarization
D)   Artifact
E)   PolarizationF) A) and D)
G) A) and C)

Question 12

Which of the following would you include in patient preparation for a pulmonary function test?

Accepted Answer

A)   Tell the patient that eating and smoking are permitted up until the time of the test
B)   Instruct the patient to sit in a chair with legs crossed
C)   Instruct the patient to slightly elevate the chin and slightly extend the neck
D)   Tell the patient to bite down firmly on the mouthpiece
E)   Encourage the patient to perform the test even if he has a viral infectionF) A) and C)
G) B) and E)

Question 13

Electrical impulse sensors used to obtain an electrocardiogram are called ____.

Accepted Answer

A)   leads
B)   styluses
C)   electrodes
D)   artifacts
E)   probesF) A) and E)
G) All of the above

Question 14

Which precordial electrode is placed in the fourth intercostal space to the left of the sternum?

Accepted Answer

A)   V6
B)   V1
C)   V4
D)   V2
E)   V3F) A) and B)
G) A) and C)

Exam 46: Electrocardiography and Pulmonary Function Testing

You are attempting to record an ECG for Mr. Potter, a 72-year-old patient who has Parkinson's disease. Knowing this, you automatically place the limb electrodes close to the trunk. However, the tracing looks as shown in the picture. What artifact is present and what can you do to fix it?

Correct Answer
verified

Which of the following refers to the contraction of the ventricles following depolarization?

Correct Answer
verified

A(n) ________ is a beat that originates from the ventricles of the heart, occurs early in the cycle, and is followed by a pause before the next cycle.

Correct Answer
verified
premature ...
View Answer

Which of the following represents the time between contraction of the ventricles and recovery?

Correct Answer
verified

Electrical impulse sensors used to obtain an electrocardiogram are called ____.

Correct Answer
verified

Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle?

Correct Answer
verified

Which precordial electrode is placed in the fourth intercostal space to the left of the sternum?

Correct Answer
verified

AC interference can be prevented by ____.

Correct Answer
verified

Correct Answer
verified

If a patient is uncomfortable lying flat on the examining table for an ECG test, he can be placed in the ____.

Correct Answer
verified

Correct Answer
verified

The peaks and valleys of the electrical impulses responsible for the cardiac cycle are called ____.

Correct Answer
verified

Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?

Correct Answer
verified

Which of the following would you include in patient preparation for a pulmonary function test?

Correct Answer
verified

Exam 46: Electrocardiography and Pulmonary Function Testing

You are attempting to record an ECG for Mr. Potter, a 72-year-old patient who has Parkinson's disease. Knowing this, you automatically place the limb electrodes close to the trunk. However, the tracing looks as shown in the picture. What artifact is present and what can you do to fix it?

Correct AnswerverifiedShow Answer

Which of the following refers to the contraction of the ventricles following depolarization?

Correct AnswerverifiedShow Answer

A(n) ________ is a beat that originates from the ventricles of the heart, occurs early in the cycle, and is followed by a pause before the next cycle.

Correct Answerverifiedpremature ...View AnswerShow Answer

Which of the following represents the time between contraction of the ventricles and recovery?

Correct AnswerverifiedShow Answer

Electrical impulse sensors used to obtain an electrocardiogram are called ____.

Correct AnswerverifiedShow Answer

Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle?

Correct AnswerverifiedShow Answer

Which precordial electrode is placed in the fourth intercostal space to the left of the sternum?

Correct AnswerverifiedShow Answer

AC interference can be prevented by ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If a patient is uncomfortable lying flat on the examining table for an ECG test, he can be placed in the ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The peaks and valleys of the electrical impulses responsible for the cardiac cycle are called ____.

Correct AnswerverifiedShow Answer

Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?

Correct AnswerverifiedShow Answer

Which of the following would you include in patient preparation for a pulmonary function test?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
premature ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified