Question 1

An ECG lead is a combination of electrodes that form an imaginary line in the body along which the electrical signals are measured.

Accepted Answer

A) True 
 B)False  False

Question 2

An ECG machine can be used for which of the following purposes?

Accepted Answer

A)  Identifying existing or emerging dysrhythmias. 
B)  Identifying myocardial ischemia and infarction. 
C)  Determining cardiac output. 
D)  Identifying existing or emerging dysrhythmias and myocardial ischemia and infarction. 
A)  Identifying existing or emerging dysrhythmias. 
B)  Identifying myocardial ischemia and infarction. 
C)  Determining cardiac output. 
D)  Identifying existing or emerging dysrhythmias and myocardial ischemia and infarction. D

Question 3

With ECG paper:

Accepted Answer

A)  five small squares, which make up a larger box, represent 0.20 seconds in duration. 
B)  each small square running horizontally represents 0.05 seconds in duration. 
C)  there is a grid of narrow horizontal and vertical lines that intersect to form rectangles. 
D)  each small square running vertically represents 10 mm or 1.0 mV. 
A)  five small squares, which make up a larger box, represent 0.20 seconds in duration. 
B)  each small square running horizontally represents 0.05 seconds in duration. 
C)  there is a grid of narrow horizontal and vertical lines that intersect to form rectangles. 
D)  each small square running vertically represents 10 mm or 1.0 mV. A

Question 4

The waveforms in lead II are mostly:

Accepted Answer

A)  upright. 
B)  inverted. 
C)  biphasic. 
D)  flat. 
A)  upright. 
B)  inverted. 
C)  biphasic. 
D)  flat.

Question 5

With Lead II the positive electrode is positioned on the:

Accepted Answer

A)  left leg. 
B)  right arm. 
C)  right side of the chest. 
D)  left shoulder. 
A)  left leg. 
B)  right arm. 
C)  right side of the chest. 
D)  left shoulder.

Question 6

Modern ECG machines are commonly equipped with all the following EXCEPT:

Accepted Answer

A)  Pulse oximetry 
B)  Pacemaker 
C)  Automatic blood pressure device 
D)  Echocardiograph 
A)  Pulse oximetry 
B)  Pacemaker 
C)  Automatic blood pressure device 
D)  Echocardiograph

Question 7

You are performing an ECG on a patient and there is a continuance of a fuzzy baseline despite your determining the ECG leads are in good contact with the skin and the patient's extremities are in a resting position. What else can you do to eliminate the artifact?

Accepted Answer

A)  Have the patient hold their breath. 
B)  Have the patient move about. 
C)  Sit the patient upright. 
D)  Lay the patient flat. 
A)  Have the patient hold their breath. 
B)  Have the patient move about. 
C)  Sit the patient upright. 
D)  Lay the patient flat.

Question 8

On the top or bottom (and sometimes both) of the printout there are often vertical slashes or markings that can help you quickly determine the:

Accepted Answer

A)  voltage of the waveforms. 
B)  duration of segments and intervals. 
C)  amplitude of the waveforms. 
D)  approximate heart rate. 
A)  voltage of the waveforms. 
B)  duration of segments and intervals. 
C)  amplitude of the waveforms. 
D)  approximate heart rate.

Question 9

To get the best possible ECG signal:

Accepted Answer

A)  the patient must be sitting upright. 
B)  there must be good contact between the electrode and the patient's skin. 
C)  the lead wires should be evenly spaced out over the patient's torso. 
D)  all other electronic devices should be turned off. 
A)  the patient must be sitting upright. 
B)  there must be good contact between the electrode and the patient's skin. 
C)  the lead wires should be evenly spaced out over the patient's torso. 
D)  all other electronic devices should be turned off.

Question 10

When using snap-on lead wires you should attach the lead wire to the electrode _____ affixing the electrodes to the patient's skin.

Accepted Answer

A)  before 
B)  after 
A)  before 
B)  after

Question 11

Electrodes can be removed from the sealed protective envelope before use without worry of them drying out.

Accepted Answer

A) True 
 B)False

Question 12

_________ larger boxes equal a three second interval.

Accepted Answer

A)  Five 
B)  Ten 
C)  Fifteen 
D)  Twenty 
A)  Five 
B)  Ten 
C)  Fifteen 
D)  Twenty

Question 13

On ECG paper horizontal measurements are used to determine the:

Accepted Answer

A)  electrical voltage of the waveforms. 
B)  amplitude of the waveforms. 
C)  cardiac output. 
D)  the heart rate. 
A)  electrical voltage of the waveforms. 
B)  amplitude of the waveforms. 
C)  cardiac output. 
D)  the heart rate.

Question 14

Which of the following is correct regarding the ECG?

Accepted Answer

A)  Lead wires which adhere directly to the patient's skin detect the heart's electrical activity. 
B)  Waveforms that appear on the oscilloscope are called static ECGs and represent "real time" electrical activity 
C)  It is much easier to analyze an ECG printout to determine abnormalities than it is to examine an image that is moving across a screen. 
D)  All ECG machines are equipped with a defibrillator. 
A)  Lead wires which adhere directly to the patient's skin detect the heart's electrical activity. 
B)  Waveforms that appear on the oscilloscope are called static ECGs and represent "real time" electrical activity 
C)  It is much easier to analyze an ECG printout to determine abnormalities than it is to examine an image that is moving across a screen. 
D)  All ECG machines are equipped with a defibrillator.

Question 15

Artifact:

Accepted Answer

A)  is produced by chaotic electrical activity found in the heart. 
B)  makes it easier to accurately interpret the ECG. 
C)  is usually consistent across the rhythm strip. 
D)  can mimic life-threatening dysrhythmias. 
A)  is produced by chaotic electrical activity found in the heart. 
B)  makes it easier to accurately interpret the ECG. 
C)  is usually consistent across the rhythm strip. 
D)  can mimic life-threatening dysrhythmias.

Question 16

Which of the following are true regarding ECG lead wires?

Accepted Answer

A)  Each has a clip, snap, or pin-type connector on the distal end that attaches to the metal snap or tab on the ECG electrode. 
B)  The color coding of the lead wires is standard and can be used to identify where each is placed. 
C)  ECG lead wires are extremely durable and can be used without worry of structural failure. 
D)  ECG lead wires are impervious to bodily fluids and do not require decontamination after use. 
A)  Each has a clip, snap, or pin-type connector on the distal end that attaches to the metal snap or tab on the ECG electrode. 
B)  The color coding of the lead wires is standard and can be used to identify where each is placed. 
C)  ECG lead wires are extremely durable and can be used without worry of structural failure. 
D)  ECG lead wires are impervious to bodily fluids and do not require decontamination after use.

Question 17

Precordial leads:

Accepted Answer

A)  provide anterior and posterior views as well as a lateral view of the heart. 
B)  are also referred to as limb leads. 
C)  view the heart along the horizontal plane. 
D)  provide anterior and posterior views as well as a lateral view of the heart and are referred to as limb leads. 
A)  provide anterior and posterior views as well as a lateral view of the heart. 
B)  are also referred to as limb leads. 
C)  view the heart along the horizontal plane. 
D)  provide anterior and posterior views as well as a lateral view of the heart and are referred to as limb leads.

Question 18

ECG electrodes:

Accepted Answer

A)  are reusable. 
B)  consist of a wet or dry gel, metal snap or tab and a self-adhesive pad. 
C)  come in one size. 
D)  can be used in patients who are diaphoretic but not in patients who have chest hair. 
A)  are reusable. 
B)  consist of a wet or dry gel, metal snap or tab and a self-adhesive pad. 
C)  come in one size. 
D)  can be used in patients who are diaphoretic but not in patients who have chest hair.

Question 19

12-lead ECG machines employ ____ lead wires.

Accepted Answer

A)  4 
B)  8 
C)  10 
D)  12 
A)  4 
B)  8 
C)  10 
D)  12

Question 20

Before ECG electrodes are placed:

Accepted Answer

A)  the ECG machine must be turned on. 
B)  the patient should be placed in a supine position. 
C)  all chest hair should be shaved off. 
D)  the skin should be cleaned to remove dead skin cells and oils. 
A)  the ECG machine must be turned on. 
B)  the patient should be placed in a supine position. 
C)  all chest hair should be shaved off. 
D)  the skin should be cleaned to remove dead skin cells and oils.

Exam 2: The Electrocardiogram

An ECG lead is a combination of electrodes that form an imaginary line in the body along which the electrical signals are measured.

An ECG machine can be used for which of the following purposes?

With ECG paper:

The waveforms in lead II are mostly:

With Lead II the positive electrode is positioned on the:

Modern ECG machines are commonly equipped with all the following EXCEPT:

You are performing an ECG on a patient and there is a continuance of a fuzzy baseline despite your determining the ECG leads are in good contact with the skin and the patient's extremities are in a resting position. What else can you do to eliminate the artifact?

On the top or bottom (and sometimes both) of the printout there are often vertical slashes or markings that can help you quickly determine the:

To get the best possible ECG signal:

When using snap-on lead wires you should attach the lead wire to the electrode _____ affixing the electrodes to the patient's skin.

Electrodes can be removed from the sealed protective envelope before use without worry of them drying out.

_________ larger boxes equal a three second interval.

On ECG paper horizontal measurements are used to determine the:

Which of the following is correct regarding the ECG?

Artifact:

Which of the following are true regarding ECG lead wires?

Precordial leads:

ECG electrodes:

12-lead ECG machines employ ____ lead wires.

Before ECG electrodes are placed:

Anatomy and Electrophysiology of the Heart

Analyzing the Electrocardiogram

Heart Rate

Regularity

P-Waves

QRS Complexes

PR Intervals

ST Segments, T-Waves, QT Intervals, and U-Waves

Overview of Dysrhythmias

Origin and Clinical Aspects of Sinus Node Dysrhythmias

Origin and Clinical Aspects of Atrial Dysrhythmias

Origin and Clinical Aspects of Junctional Dysrhythmias

Origin and Clinical Aspects of Ventricular Dysrhythmias

Origin and Clinical Aspects of AV Heart Blocks

Pacemakers and Implanted Cardioverter-Defibrillators

12 Lead ECGS

Atrial Enlargement and Ventricular Hypertrophy

Bundle Branch Block

Myocardial Ischemia and Infarction

Other Cardiac Conditions and the ECG

Putting It All Together

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