Question 1

Which of the following delays the electrical impulse to give time for the atria to complete contraction and the ventricles to fill?

Accepted Answer

A)  Bundle of His 
B)  SA node 
C)  Bundle branches 
D)  AV node 
E)  Purkinje fibers 
A)  Bundle of His 
B)  SA node 
C)  Bundle branches 
D)  AV node 
E)  Purkinje fibers D

Question 2

The deflections that occur on an ECG are labeled with the letters ____.

Accepted Answer

A)  A, B, C, D, E, and F 
B)  P, Q, R, S, T, and U 
C)  H, I, J, K, and L 
D)  V, W, X, Y, and Z 
E)  M, N, O, P, and Q 
A)  A, B, C, D, E, and F 
B)  P, Q, R, S, T, and U 
C)  H, I, J, K, and L 
D)  V, W, X, Y, and Z 
E)  M, N, O, P, and Q 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 wires 
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 wires E

Question 4

Which of the following delays the electrical impulse for muscle contraction, giving the atria time to contract completely and fill the ventricles with blood?

Accepted Answer

A)  AV node 
B)  SA node 
C)  Purkinje fibers 
D)  Bundle of His 
E)  Bundle branches 
A)  AV node 
B)  SA node 
C)  Purkinje fibers 
D)  Bundle of His 
E)  Bundle branches

Question 5

The condition of having two separate poles, one positive and the other negative, is called ________.

Accepted Answer

The answer of The condition of having two separate poles,...

Question 6

Which of the following is used to assess the electrical activity of a patient's heart over a 24-hour period of normal activity?

Accepted Answer

A)  Stress testing 
B)  Pulmonary function testing 
C)  Holter monitoring 
D)  Electrocardiography 
E)  Echocardiography 
A)  Stress testing 
B)  Pulmonary function testing 
C)  Holter monitoring 
D)  Electrocardiography 
E)  Echocardiography

Question 7

Electrical impulses of the cardiac cycle produce a series of waves with peaks and valleys on an electrocardiogram that are called ________.

Accepted Answer

The answer of Electrical impulses of the cardiac cycle produce...

Question 8

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

Question 9

Which of the following is the primary pacemaker of the heart?

Accepted Answer

A)  AV node 
B)  Bundle of His 
C)  SA node 
D)  Purkinje fibers 
E)  Bundle branches 
A)  AV node 
B)  Bundle of His 
C)  SA node 
D)  Purkinje fibers 
E)  Bundle branches

Question 10

How is the heart rate from a regular ECG tracing determined?

Accepted Answer

A)  Count the number of ST segments in a 60-second strip 
B)  Multiply the number of QRS complexes in a 6-second strip by 10 
C)  Multiply the number of QRS complexes in a 10-second strip by 10 
D)  Count the P waves in a 20-second strip 
E)  Count the number of QRS complexes in a 30-second strip 
A)  Count the number of ST segments in a 60-second strip 
B)  Multiply the number of QRS complexes in a 6-second strip by 10 
C)  Multiply the number of QRS complexes in a 10-second strip by 10 
D)  Count the P waves in a 20-second strip 
E)  Count the number of QRS complexes in a 30-second strip

Question 11

This arrhythmia is ________ and is caused by rapid, multiple electrical signals that fire from areas in the atria other than the SA node.

Accepted Answer

The answer of This arrhythmia is ________ and is caused...

Question 12

Which control is used to adjust the position of the stylus on the ECG?

Accepted Answer

A)  Centering control 
B)  Sensitivity control 
C)  Marker control 
D)  Standardization control 
E)  Stylus temperature control 
A)  Centering control 
B)  Sensitivity control 
C)  Marker control 
D)  Standardization control 
E)  Stylus temperature control

Question 13

Which of the following would be included in the patient's instructions regarding a Holter monitor test?

Accepted Answer

A)  Encourage the patient to shower while the device is in place 
B)  Tell the patient that using an electrical blanket is permissible 
C)  Instruct the patient to record all activities, emotions, symptoms, and medications taken 
D)  Tell the patient to wear tight-fitting clothing to keep the monitor in place 
E)  Instruct the patient to remove any electrodes that seem loose 
A)  Encourage the patient to shower while the device is in place 
B)  Tell the patient that using an electrical blanket is permissible 
C)  Instruct the patient to record all activities, emotions, symptoms, and medications taken 
D)  Tell the patient to wear tight-fitting clothing to keep the monitor in place 
E)  Instruct the patient to remove any electrodes that seem loose

Question 14

Which of the following can prevent a wandering baseline?

Accepted Answer

A)  Avoid the use of paper clips on the tracing 
B)  Make sure all the leads are connected properly 
C)  Eliminate other sources of electricity in the room 
D)  Be sure the skin is prepared adequately 
E)  Make sure the temperature of the room is comfortable 
A)  Avoid the use of paper clips on the tracing 
B)  Make sure all the leads are connected properly 
C)  Eliminate other sources of electricity in the room 
D)  Be sure the skin is prepared adequately 
E)  Make sure the temperature of the room is comfortable

Question 15

How is somatic interference on an ECG tracing prevented?

Accepted Answer

A)  Make sure lead wires follow the contour of the body 
B)  Ground the machine 
C)  Prepare the skin properly 
D)  Remind the patient to lie still and to refrain from talking 
E)  Unplug other electrical devices in the room 
A)  Make sure lead wires follow the contour of the body 
B)  Ground the machine 
C)  Prepare the skin properly 
D)  Remind the patient to lie still and to refrain from talking 
E)  Unplug other electrical devices in the room

Question 16

Which peak flow zone indicates that large airways are beginning to narrow?

Accepted Answer

A)  Green zone 
B)  Yellow zone 
C)  Red zone 
D)  Blue zone 
E)  Orange zone 
A)  Green zone 
B)  Yellow zone 
C)  Red zone 
D)  Blue zone 
E)  Orange zone

Question 17

A(n) ________ is the tracing made by an electrocardiograph.

Accepted Answer

The answer of A(n) ________ is the tracing made by...

Question 18

A somatic interference artifact is caused by ______ movement.

Accepted Answer

The answer of A somatic interference artifact is caused by...

Question 19

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 20

An instrument called a(n) ________ measures the air taken in by and expelled from the lungs.

Accepted Answer

The answer of An instrument called a(n) ________ measures the...

Exam 49: Electrocardiography and Pulmonary Function Testing

Which of the following delays the electrical impulse to give time for the atria to complete contraction and the ventricles to fill?

The deflections that occur on an ECG are labeled with the letters ____.

Which of the following delays the electrical impulse for muscle contraction, giving the atria time to contract completely and fill the ventricles with blood?

The condition of having two separate poles, one positive and the other negative, is called ________.

Which of the following is used to assess the electrical activity of a patient's heart over a 24-hour period of normal activity?

Electrical impulses of the cardiac cycle produce a series of waves with peaks and valleys on an electrocardiogram that are called ________.

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

Which of the following is the primary pacemaker of the heart?

How is the heart rate from a regular ECG tracing determined?

This arrhythmia is ________ and is caused by rapid, multiple electrical signals that fire from areas in the atria other than the SA node.

Which control is used to adjust the position of the stylus on the ECG?

Which of the following would be included in the patient's instructions regarding a Holter monitor test?

Which of the following can prevent a wandering baseline?

How is somatic interference on an ECG tracing prevented?

Which peak flow zone indicates that large airways are beginning to narrow?

A(n) ________ is the tracing made by an electrocardiograph.

A somatic interference artifact is caused by ______ movement.

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.

An instrument called a(n) ________ measures the air taken in by and expelled from the lungs.

Introduction to Medical Assisting

Healthcare and the Healthcare Team

Professionalism and Success

Interpersonal Communication

Legal and Ethical Issues

Infection Control Fundamentals

Safety and Patient Reception

Office Equipment and Supplies

Examination and Treatment Areas

Written and Electronic Communication

Medical Records and Documentation

Electronic Health Records

Managing Medical Records

Telephone Techniques

Patient Education

Schedule Management

Insurance Billing

Diagnostic Coding

Procedure Coding

Patient Collections and Financial Management

Organization of the Body

The Integumentary System

The Skeletal System

The Muscular System

The Cardiovascular System

The Blood

The Lymphatic and Immune Systems

The Respiratory System

The Nervous System

The Urinary System

The Reproductive Systems

The Digestive System

The Endocrine System

Special Senses

Infection Control Practices

Patient Interview and History

Vital Signs and Measurements

Assisting With a General Physical Exam

Assisting in Reproductive and Urinary Specialties

Assisting in Pediatrics

Assisting in Geriatrics

Assisting in Other Medical Specialties

Assisting in Eye and Ear Care

Assisting in Minor Surgery

Orientation to the Lab

Microbiology and Disease

Processing and Testing Urine and Stool Samples

Collecting, Processing, and Testing Blood Specimens

Diagnostic Imaging

Principles of Pharmacology

Math and Dosage Calculations

Medication Administration

Physical Therapy and Rehabilitation

Nutrition and Health

Practice Management

Emergency Preparedness

Preparing for the World of Work

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