Question 1

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

Question 2

The greatest volume of air that can be expelled when a person performs a rapid, forced expiration is the ____.

Accepted Answer

A)  inspiratory capacity 
B)  forced vital capacity 
C)  peak expiratory flow rate 
D)  residual volume 
E)  peak flow zone 
A)  inspiratory capacity 
B)  forced vital capacity 
C)  peak expiratory flow rate 
D)  residual volume 
E)  peak flow zone

Question 3

An ECG tracing for a patient who is shivering may have ________ interference, as shown in this tracing.

Accepted Answer

The answer of An ECG tracing for a patient who...

Question 4

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 5

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 clips 
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 clips

Question 6

This artifact is caused by ________.

Accepted Answer

AC interfe

Question 7

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

Question 8

The impulses received through various combinations of electrodes constitute different ________, or views of the electrical activity of the heart, that are recorded on the ECG.

Accepted Answer

The answer of The impulses received through various combinations of...

Question 9

A test used to measure breathing capacity is called ________.

Accepted Answer

The answer of A test used to measure breathing capacity...

Question 10

Which of the following dysrhythmias is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?

Accepted Answer

A)  Atrial fibrillation 
B)  PVCs 
C)  Ventricular fibrillation 
D)  Bundle branch block 
E)  Ventricular tachycardia 
A)  Atrial fibrillation 
B)  PVCs 
C)  Ventricular fibrillation 
D)  Bundle branch block 
E)  Ventricular tachycardia

Question 11

When a PVC appears on the ECG, which wave is missing?

Accepted Answer

A)  Q 
B)  R 
C)  S 
D)  P 
E)  T 
A)  Q 
B)  R 
C)  S 
D)  P 
E)  T

Question 12

Which of the following is a small upward curve that represents the sinoatrial node impulse, wave of depolarization through the atria, and resultant contraction?

Accepted Answer

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

Question 13

Which of the following is the process by which a graphic pattern is created from the electrical impulses generated in the heart as it pumps?

Accepted Answer

A)  Electroencephalography 
B)  Electromyography 
C)  Electrocardiography 
D)  Electroneurography 
E)  Electrogastrography 
A)  Electroencephalography 
B)  Electromyography 
C)  Electrocardiography 
D)  Electroneurography 
E)  Electrogastrography

Question 14

The instrument that measures and displays the electrical impulses responsible for the cardiac cycle is a(n) ____.

Accepted Answer

A)  electrocardiograph 
B)  electroencephalograph 
C)  electrocardiogram 
D)  electroencephalogram 
E)  electrode 
A)  electrocardiograph 
B)  electroencephalograph 
C)  electrocardiogram 
D)  electroencephalogram 
E)  electrode

Exam 49: Electrocardiography and Pulmonary Function Testing

Possible causes for a wandering baseline are ____.

The greatest volume of air that can be expelled when a person performs a rapid, forced expiration is the ____.

An ECG tracing for a patient who is shivering may have ________ interference, as shown in this 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?

AC interference can be prevented by ____.

This artifact is caused by ________.

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

The impulses received through various combinations of electrodes constitute different ________, or views of the electrical activity of the heart, that are recorded on the ECG.

A test used to measure breathing capacity is called ________.

Which of the following dysrhythmias is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?

When a PVC appears on the ECG, which wave is missing?

Which of the following is a small upward curve that represents the sinoatrial node impulse, wave of depolarization through the atria, and resultant contraction?

Which of the following is the process by which a graphic pattern is created from the electrical impulses generated in the heart as it pumps?

The instrument that measures and displays the electrical impulses responsible for the cardiac cycle is a(n) ____.

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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