Question 1

Which of the following may result in extraneous marks on the ECG tracing?

Accepted Answer

A)  Improper electrode placement 
B)  Detached wire 
C)  Use of paper clips 
D)  Breathing movement 
E)  Electrical interference 
A)  Improper electrode placement 
B)  Detached wire 
C)  Use of paper clips 
D)  Breathing movement 
E)  Electrical interference

Question 2

Which precordial electrode is placed in the fifth intercostal space, where it intersects an imaginary line drawn straight down the middle of the clavicle?

Accepted Answer

A)  V6 
B)  V2 
C)  V4 
D)  V1 
E)  V3 
A)  V6 
B)  V2 
C)  V4 
D)  V1 
E)  V3

Question 3

The different views recorded on an electrocardiogram that are produced by the electrical activity of the heart are ____.

Accepted Answer

A)  leads 
B)  stylus 
C)  electrodes 
D)  deflections 
E)  probes 
A)  leads 
B)  stylus 
C)  electrodes 
D)  deflections 
E)  probes

Question 4

The electrical impulse that initiates a chain reaction resulting in contraction is ________.

Accepted Answer

The answer of The electrical impulse that initiates a chain...

Question 5

Electrodes for limb leads should be attached to ____.

Accepted Answer

A)  a bony area on each limb 
B)  a highly vascular area 
C)  fleshy portions of the limbs 
D)  the wrists and ankles 
E)  the knees and elbows 
A)  a bony area on each limb 
B)  a highly vascular area 
C)  fleshy portions of the limbs 
D)  the wrists and ankles 
E)  the knees and elbows

Question 6

This arrhythmia is ________.

Accepted Answer

ventricula

Question 7

Pulse oximetry can be used to help diagnose ________, in which breathing pauses during sleep.

Accepted Answer

The answer of Pulse oximetry can be used to help...

Question 8

Pulmonary function tests are useful in monitoring ____.

Accepted Answer

A)  myocardial infarction 
B)  chronic obstructive pulmonary disease 
C)  angina pectoris 
D)  arrhythmias 
E)  congestive heart failure 
A)  myocardial infarction 
B)  chronic obstructive pulmonary disease 
C)  angina pectoris 
D)  arrhythmias 
E)  congestive heart failure

Question 9

Which of the following is a correct statement about the stylus temperature control?

Accepted Answer

A)  A lower temperature produces a heavier line. 
B)  It has no effect on the ECG tracing. 
C)  A higher temperature produces a heavier line. 
D)  Lower temperatures cause smearing. 
E)  A higher temperature produces a thinner line. 
A)  A lower temperature produces a heavier line. 
B)  It has no effect on the ECG tracing. 
C)  A higher temperature produces a heavier line. 
D)  Lower temperatures cause smearing. 
E)  A higher temperature produces a thinner line.

Question 10

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 11

Transmission of electrical impulses in the heart begins in the ____.

Accepted Answer

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

Question 12

Which precordial electrode is placed in the fifth intercostal space, directly below the middle of the armpit?

Accepted Answer

A)  V1 
B)  V2 
C)  V4 
D)  V6 
E)  V3 
A)  V1 
B)  V2 
C)  V4 
D)  V6 
E)  V3

Question 13

An electrocardiography device that includes a small cassette or microchip recorder and records the heart rhythm over a 24-hour period is a(n) ________ monitor.

Accepted Answer

The answer of An electrocardiography device that includes a small...

Question 14

After preparing the ECG machine, you explained the procedure to Mrs. Thomas, connected the electrodes, and began the tracing, as shown in the picture. You rechecked the electrodes and they are all placed correctly. None of the wires are loose. However, you notice that Mrs. Thomas's skin smells fragrant, as though she has used a body lotion recently. Which of the following describes the problem, its possible cause, and the correct solution?

Accepted Answer

A)  Extraneous marks caused by paper clips; remove the paper clips 
B)  Somatic interference caused by patient shivering; offer a warm blanket 
C)  Wandering baseline caused by lotion on the skin; re-prep the skin with isopropyl alcohol 
D)  AC interference caused by nearby equipment; turn equipment off 
E)  Flat line caused by crossed wires; reconnect the wires correctly 
A)  Extraneous marks caused by paper clips; remove the paper clips 
B)  Somatic interference caused by patient shivering; offer a warm blanket 
C)  Wandering baseline caused by lotion on the skin; re-prep the skin with isopropyl alcohol 
D)  AC interference caused by nearby equipment; turn equipment off 
E)  Flat line caused by crossed wires; reconnect the wires correctly

Question 15

If a lead does not appear on an ECG tracing, what should you do before you repeat the tracing?

Accepted Answer

A)  Re-center the stylus 
B)  Set the sensitivity selector to 2 
C)  Reconnect the wire 
D)  Increase the paper speed to 50 mm per second 
E)  Move the ECG table away from the wall 
A)  Re-center the stylus 
B)  Set the sensitivity selector to 2 
C)  Reconnect the wire 
D)  Increase the paper speed to 50 mm per second 
E)  Move the ECG table away from the wall

Question 16

In ________ echocardiography, an ultrasound transducer is moved around the patient's chest or abdomen to produce heart images.

Accepted Answer

The answer of In ________ echocardiography, an ultrasound transducer is...

Question 17

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 18

Which of these allow you to adjust the position of the stylus?

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 19

How do you prevent somatic interference on an ECG tracing?

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 20

Possible causes for a wandering baseline are ____.

Accepted Answer

A)  the use of paper clips, wet hands, or improper mounting 
B)  loose wires or a short circuit in the wires 
C)  improper grounding or cardiac arrest 
D)  poor skin preparation, dangling wire, or breathing movement 
E)  wrong selector switch setting or crossed wires 
A)  the use of paper clips, wet hands, or improper mounting 
B)  loose wires or a short circuit in the wires 
C)  improper grounding or cardiac arrest 
D)  poor skin preparation, dangling wire, or breathing movement 
E)  wrong selector switch setting or crossed wires

Exam 46: Electrocardiography and Pulmonary Function Testing

Which of the following may result in extraneous marks on the ECG tracing?

Which precordial electrode is placed in the fifth intercostal space, where it intersects an imaginary line drawn straight down the middle of the clavicle?

The different views recorded on an electrocardiogram that are produced by the electrical activity of the heart are ____.

The electrical impulse that initiates a chain reaction resulting in contraction is ________.

Electrodes for limb leads should be attached to ____.

This arrhythmia is ________.

Pulse oximetry can be used to help diagnose ________, in which breathing pauses during sleep.

Pulmonary function tests are useful in monitoring ____.

Which of the following is a correct statement about the stylus temperature control?

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

Transmission of electrical impulses in the heart begins in the ____.

Which precordial electrode is placed in the fifth intercostal space, directly below the middle of the armpit?

An electrocardiography device that includes a small cassette or microchip recorder and records the heart rhythm over a 24-hour period is a(n) ________ monitor.

If a lead does not appear on an ECG tracing, what should you do before you repeat the tracing?

In ________ echocardiography, an ultrasound transducer is moved around the patient's chest or abdomen to produce heart images.

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

Which of these allow you to adjust the position of the stylus?

How do you prevent somatic interference on an ECG tracing?

Possible causes for a wandering baseline are ____.

Introduction to Medical Assisting

Healthcare and the Healthcare Team

Professionalism and Success

Interpersonal Communication

Legal and Ethical Issues

Basic Safety and Infection Control

Patient Reception

Office Equipment and Supplies

Examination and Treatment Areas

Written and Electronic Documents

Medical Records and Documentation

Electronic Health Records

Telephone Techniques

Patient Education

Managing Medical Records

Schedule Management

Insurance and Billing

Diagnostic Coding

Procedure Coding

Patient Billing and Collection

Financial Management Key

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 System

The Digestive System

The Endocrine System

Special Senses

Patient Interview and History

Vital Signs and Measurements

Assisting With a General Physical Examination

Assisting in Reproductive and Urinary Specialties

Assisting in Pediatrics

Assisting in Geriatrics

Assisting in Other Medical Specialties

Assisting With Eye and Ear Care

Assisting With Minor Surgery

Orientation to the Lab

Microbiology and Disease

Processing and Testing Urine and Stool Specimens

Collecting, Processing, and Testing Blood Specimens

Diagnostic Imaging

Principles of Pharmacology

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Physical Therapy and Rehabilitation

Nutrition and Health

Practice Management

Emergency Preparedness

Preparing for the World of Work

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