Question 1

Which of the following devices monitors the heart rhythm and delivers a shock to the heart if it detects a dangerous ventricular tachycardia or fibrillation?

Accepted Answer

A)  ICD 
B)  Pacemaker 
C)  Holter monitor 
D)  All of the above 
A)  ICD 
B)  Pacemaker 
C)  Holter monitor 
D)  All of the above

Question 2

The medical assistant may assist with pacemaker implantation in the physician's office setting.

Accepted Answer

A) True 
 B)False

Question 3

Sinus arrhythmia is a result of the abnormal flow of the electrical system of the heart.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following leads records tracings between the left arm and left leg, which reflects the electrical activity of the inferior surface of the left ventricle?

Accepted Answer

A)  Lead I 
B)  Lead II 
C)  Lead III 
D)  Lead IV 
A)  Lead I 
B)  Lead II 
C)  Lead III 
D)  Lead IV

Question 5

The __________ is the electric recording of the heart at rest.

Accepted Answer

The answer of The __________ is the electric recording of...

Question 6

Transverse plane leads on a standard ECG include which of the following?

Accepted Answer

A)  Lead I 
B)  Lead II 
C)  Lead III 
D)  Leads V1 to V6 
E)  VR, VL, and VF 
A)  Lead I 
B)  Lead II 
C)  Lead III 
D)  Leads V1 to V6 
E)  VR, VL, and VF

Question 7

The SA node stimulates both atria to depolarize at the same time.

Accepted Answer

A) True 
 B)False

Question 8

The standard speed for an ECG recording is 50 mm/sec.

Accepted Answer

A) True 
 B)False

Question 9

________ is the relaxation phase of the heart.

Accepted Answer

A)  Systole 
B)  Diastole 
C)  Cardioversion 
D)  None of the above 
A)  Systole 
B)  Diastole 
C)  Cardioversion 
D)  None of the above

Question 10

Which statement is true about ECG paper?

Accepted Answer

A)  It is not affected by environmental factors, so it is easily maintained in the medical record. 
B)  It has horizontal and vertical lines at 1-mm intervals. 
C)  Every fifth line measures 6 mm on each side. 
D)  None of the above is true. 
A)  It is not affected by environmental factors, so it is easily maintained in the medical record. 
B)  It has horizontal and vertical lines at 1-mm intervals. 
C)  Every fifth line measures 6 mm on each side. 
D)  None of the above is true.

Question 11

The patient must be placed in the supine position for an ECG, even if the person has the symptoms of dyspnea and orthopnea.

Accepted Answer

A) True 
 B)False

Question 12

Polarization is the same thing as myocardial contraction.

Accepted Answer

A) True 
 B)False

Question 13

Patients should not hold their breath during the brief seconds necessary to record an ECG.

Accepted Answer

A) True 
 B)False

Question 14

If the ECG recording appears with the baseline rising and falling, the medical assistant should

Accepted Answer

A)  check for nearby electric appliances. 
B)  check electrode attachment. 
C)  continue recording the ECG. 
D)  check the cable connections to the electrodes. 
A)  check for nearby electric appliances. 
B)  check electrode attachment. 
C)  continue recording the ECG. 
D)  check the cable connections to the electrodes.

Question 15

After electrical stimulation the ventricles contract, emptying oxygen-rich blood into the pulmonary artery.

Accepted Answer

A) True 
 B)False

Question 16

Systole is defined as

Accepted Answer

A)  the contraction of the chambers of the heart. 
B)  the relaxation of the chambers of the heart. 
C)  a pounding or racing heart. 
D)  None of the above 
A)  the contraction of the chambers of the heart. 
B)  the relaxation of the chambers of the heart. 
C)  a pounding or racing heart. 
D)  None of the above

Question 17

During the diastole cardiac cycle, which of the following occur?

Accepted Answer

A)  Atria contract and empty of blood 
B)  Ventricles contract and empty of blood 
C)  The chambers refill with blood 
D)  Both A and B 
E)  All of the above 
A)  Atria contract and empty of blood 
B)  Ventricles contract and empty of blood 
C)  The chambers refill with blood 
D)  Both A and B 
E)  All of the above

Question 18

PVCs are recorded when the ventricles depolarize before a P wave.

Accepted Answer

A) True 
 B)False

Question 19

The QRS complex shows the contraction of both __________ and also reflects the completion of cardiac depolarization.

Accepted Answer

The answer of The QRS complex shows the contraction of...

Question 20

The skin is an excellent conductor of electrical activity.

Accepted Answer

A) True 
 B)False

Exam 42: Principles of Electrocardiography

Which of the following devices monitors the heart rhythm and delivers a shock to the heart if it detects a dangerous ventricular tachycardia or fibrillation?

The medical assistant may assist with pacemaker implantation in the physician's office setting.

Sinus arrhythmia is a result of the abnormal flow of the electrical system of the heart.

Which of the following leads records tracings between the left arm and left leg, which reflects the electrical activity of the inferior surface of the left ventricle?

The __________ is the electric recording of the heart at rest.

Transverse plane leads on a standard ECG include which of the following?

The SA node stimulates both atria to depolarize at the same time.

The standard speed for an ECG recording is 50 mm/sec.

________ is the relaxation phase of the heart.

Which statement is true about ECG paper?

The patient must be placed in the supine position for an ECG, even if the person has the symptoms of dyspnea and orthopnea.

Polarization is the same thing as myocardial contraction.

Patients should not hold their breath during the brief seconds necessary to record an ECG.

If the ECG recording appears with the baseline rising and falling, the medical assistant should

After electrical stimulation the ventricles contract, emptying oxygen-rich blood into the pulmonary artery.

Systole is defined as

During the diastole cardiac cycle, which of the following occur?

PVCs are recorded when the ventricles depolarize before a P wave.

The QRS complex shows the contraction of both __________ and also reflects the completion of cardiac depolarization.

The skin is an excellent conductor of electrical activity.

Competency-Based Education and the Medical Assistant Student

The Medical Assistant and the Healthcare Team

Professional Behavior in the Workplace

Therapeutic Communications

Medicine and Law

Medicine and Ethics

Technology and Written Communication in the Medical Office

Telephone Techniques

Scheduling Appointments and Patient Processing

Daily Operations in the Ambulatory Care Setting

The Health Record

Basics of Diagnostic Coding

Basics of Procedural Coding

Basics of Health Insurance

Medical Billing and Reimbursement

Patient Accounts, Collections, and Practice Management

Banking Services and Procedures

Supervision and Human Resources Management

Medical Practice Marketing and Customer Service

Infection Control

Patient Assessment

Patient Education

Nutrition and Health Promotion

Vital Signs

Assisting With the Primary Physical Examination

Principles of Pharmacology

Pharmacology Math

Administering Medications

Safety and Emergency Practices

Assisting in Ophthalmology and Otolaryngology

Assisting in Dermatology

Assisting in Gastroenterology

Assisting in Urology and Male Reproduction

Assisting in Obstetrics and Gynecology

Assisting in Pediatrics

Assisting in Orthopedic Medicine

Assisting in Neurology and Mental Health

Assisting in Endocrinology

Assisting in Pulmonary Medicine

Assisting in Cardiology

Assisting in Geriatrics

Assisting With Diagnostic Imaging

Assisting in the Clinical Laboratory

Assisting in the Analysis of Urine

Assisting in Blood Collection

Assisting in the Analysis of Blood

Assisting in Microbiology and Immunology

Surgical Supplies and Instruments

Surgical Asepsis and Assisting With Surgical Procedures

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