Question 1

Which statement is not true about V-fib?

Accepted Answer

A)  It typically is preceded by V-tach. 
B)  It results in death quickly if not treated effectively. 
C)  The patient can be stabilized with powerful cardiovascular medications. 
D)  It may lead to asystole. 
A)  It typically is preceded by V-tach. 
B)  It results in death quickly if not treated effectively. 
C)  The patient can be stabilized with powerful cardiovascular medications. 
D)  It may lead to asystole. C

Question 2

Atrial flutter may occur if

Accepted Answer

A)  the electrical charge does not pass out of the SA node. 
B)  the ventricles contract repeatedly. 
C)  ectopic atrial beats occur. 
D)  the patient consumes too much caffeine. 
A)  the electrical charge does not pass out of the SA node. 
B)  the ventricles contract repeatedly. 
C)  ectopic atrial beats occur. 
D)  the patient consumes too much caffeine. C

Question 3

The electrodes of the ECG carry cardiac electrical impulses into the machine,where they are magnified by an amplifier.

Accepted Answer

A) True 
 B)False  False

Question 4

The electrocardiograph records both the intensity of and the actual time required for each part of the cardiac cycle.

Accepted Answer

A) True 
 B)False

Question 5

Summarize the immediate treatment of an MI.Explain why certain medications are administered.

Accepted Answer

Immediate treatment for a heart attack i

Question 6

If a patient has dyspnea or orthopnea,which of the following positions is acceptable for performing an electrocardiogram?

Accepted Answer

A)  Semi-supine position 
B)  Semi-Fowler's position 
C)  Prone position 
D)  Dorsal recumbent position 
E)  None of the above 
A)  Semi-supine position 
B)  Semi-Fowler's position 
C)  Prone position 
D)  Dorsal recumbent position 
E)  None of the above

Question 7

The __________ on an ECG machine creates the image on the ECG paper.

Accepted Answer

The answer of The __________ on an ECG machine creates...

Question 8

Patients with a history of V-fib may be treated with an ICD.

Accepted Answer

A) True 
 B)False

Question 9

A pounding or racing heart,which may or may not indicate a serious heart disorder,is called ____________.

Accepted Answer

The answer of A pounding or racing heart,which may or...

Question 10

The most distal portions of the electrical system of the myocardium are the __________.

Accepted Answer

The answer of The most distal portions of the electrical...

Question 11

Which of the following is seen on the ECG strip of a patient with an MI?

Accepted Answer

A)  Elevated ST segments 
B)  Elevated T waves 
C)  Extended QRST segments 
D)  Absent T wave 
A)  Elevated ST segments 
B)  Elevated T waves 
C)  Extended QRST segments 
D)  Absent T wave

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

What part of the ECG complex represents atrial depolarization?

Accepted Answer

A)  P wave 
B)  T wave 
C)  ST segment 
D)  QRS complex 
A)  P wave 
B)  T wave 
C)  ST segment 
D)  QRS complex

Question 14

On an ECG recording,five 5-mm boxes are seen between the R waves.What is the patient's heart rate per minute?

Accepted Answer

A)  60 
B)  65 
C)  70 
D)  80 
A)  60 
B)  65 
C)  70 
D)  80

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

The __________ control(s)the rate of heart contraction by initiating contractions 60 to 100 times a minute.

Accepted Answer

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

Question 17

The precordial,or chest,leads are __________ and are designated V1,V2,V3,V4,V5,and V6.

Accepted Answer

Question 18

In a standard 12-lead ECG,the measurement of current that the heart muscle produces between the right arm electrode and the left arm electrode is known as the

Accepted Answer

A)  standard limb lead I. 
B)  standard limb lead II. 
C)  standard limb lead III. 
D)  augmented lead aVL. 
A)  standard limb lead I. 
B)  standard limb lead II. 
C)  standard limb lead III. 
D)  augmented lead aVL.

Question 19

The T wave indicates ventricular recovery,or __________,of the ventricles.

Accepted Answer

The answer of The T wave indicates ventricular recovery,or __________,of...

Question 20

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...

Exam 25: Principles of Electrocardiography

Which statement is not true about V-fib?

Atrial flutter may occur if

The electrodes of the ECG carry cardiac electrical impulses into the machine,where they are magnified by an amplifier.

The electrocardiograph records both the intensity of and the actual time required for each part of the cardiac cycle.

Summarize the immediate treatment of an MI.Explain why certain medications are administered.

If a patient has dyspnea or orthopnea,which of the following positions is acceptable for performing an electrocardiogram?

The __________ on an ECG machine creates the image on the ECG paper.

Patients with a history of V-fib may be treated with an ICD.

A pounding or racing heart,which may or may not indicate a serious heart disorder,is called ____________.

The most distal portions of the electrical system of the myocardium are the __________.

Which of the following is seen on the ECG strip of a patient with an MI?

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

What part of the ECG complex represents atrial depolarization?

On an ECG recording,five 5-mm boxes are seen between the R waves.What is the patient's heart rate per minute?

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

The __________ control(s)the rate of heart contraction by initiating contractions 60 to 100 times a minute.

The precordial,or chest,leads are __________ and are designated V1,V2,V3,V4,V5,and V6.

In a standard 12-lead ECG,the measurement of current that the heart muscle produces between the right arm electrode and the left arm electrode is known as the

The T wave indicates ventricular recovery,or __________,of the ventricles.

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

Competency-Based Education and the Medical Assistant Student

The Health Record

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

Career Development and Life Skills

Filters

The precordial,or chest,leads are __________ and are designated V₁,V₂,V₃,V₄,V₅,and V₆.