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WorksheetsEKG Practice Assessment - Section 1
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
The bottom of the heart tilts
a)
backwards and down, towards the right side of the body
b)
forwards and down, towards the left side of the body
c)
backwards and down, towards the left side of the body
d)
forwards and down, towards the right side of the body
2.
The outer layer of the heart is called
a)
myocardium
b)
endocardium
c)
atria
d)
epicardium
3.
What surrounds the heart and acts as a tough, protective sac
a)
pericardium
b)
myocardium
c)
epicardium
d)
endocardium
4.
The left atrium receives oxygenated blood through
a)
pulmonary veins
b)
the inferior and superior vena cavae
c)
epicardium
d)
parietal layer
5.
The right ventricle receives blood from the right atrium and pumps out through
a)
the pulmonary veins
b)
the aorta
c)
myocardium
d)
the pulmonary arteries
6.
How many valves does the heart contain?
a)
3
b)
2
c)
4
d)
5
7.
What are the two AV valves called?
a)
tricuspid and mitral
b)
left atrium and left ventricle
c)
pulmonic valve and aortic valve
d)
superior vena cava and inferior vena cava
8.
What are the semilunar valves called?
a)
right atrium and right ventricle
b)
pulmonic valve and aortic valve
c)
tricuspid and mitral valve
d)
superior vena cava and inferior vena cava
9.
What happens during diastole?
a)
left atrium is filling up with blood, and aortic valve is closed
b)
left ventricle is filling up with the blood, and aortic valve is closed
c)
left ventricle is filling up with blood, and aortic valve is open
d)
left atrium is filling up with blood, and aortic valve is open
10.
What are the four characteristics of cardiac cells?
a)
automaticity, excitability, conductivity, and controllability
b)
conductivity, transitivity, automaticity, and excitability
c)
excitability, conductivity, automaticity, and contractility
d)
contractility, automaticity, transitivity, and excitability
11.
The ability of a cell to transmit an electrical impulse to another cardiac cell is
a)
automaticity
b)
conductivity
c)
excitability
d)
contractility
12.
When a cell is dully depolarized and attempts to return to its resting state is called
a)
depolarization
b)
polarized
c)
repolarization
d)
excitability
13.
How many impulses does the SA node generates per minute?
a)
30-40
b)
40-60
c)
60-100
d)
100-120
14.
What pacemaker has a firing rate of 40-60 times per minute?
a)
Purkinje fibers
b)
SA node
c)
Bundle of His
d)
AV node
15.
The stroke volume is
a)
the amount of blood the heart pumps per minute
b)
the amount of pressure the left ventricle must work against to pump blood into the aorta
c)
the amount of blood ejected with each ventricular contraction
d)
the ability of the heart muscl cells to contract after depolarization
16.
What does a lead provide?
a)
a view of the heart's electrical activity between two positive poles
b)
a view of the heart's electrical activity between one positive pole and negative pole
c)
a view of the heart's electrical activity between two negative poles
d)
a view of the heart's electrical activity between two positives and two negatives
17.
When there is no electrical activity occurring or electrical activity is too weak to measure, this is called
a)
isoelectric waveform
b)
lead
c)
plane
d)
interval
18.
What refers to the cross-sectional perspective of the heart's electrical activity?
a)
lead
b)
waveform
c)
plane
d)
complex
19.
How many types of ECG recordings are there?
a)
1
b)
2
c)
3
d)
4
20.
This records information from 12 different views of the heart and provides a complete picture of the electrical activity.
a)
rhythm strip
b)
12-lead ECG
c)
V leads
d)
Six precordial leads
21.
This provides a continuous cardiac rhythm display and transmits the ECG tracing.
a)
monitor
b)
lead
c)
complex
d)
electrode
22.
Where is lead V1 placed?
a)
at the left of the sternum at the 4th intercostal rib space
b)
on the right side of the sternum at the 4th intercostal rib space
c)
at the 5th intercostal rib space at the midclavicular line
d)
at the right of the sternum at the 5th intercostal rib space
23.
Where is lead V5 placed?
a)
on the right side of the sternum at the 4th intercostal space
b)
placed at the 5th intercostal space at the anterior axillary line
c)
at the 5th intercostal space at the midclavicular line
d)
at the left of the sternum at the 4th intercostal space
24.
On the horizontal axis of the ECG strip, each small block equals to how may seconds?
a)
0.02
b)
0.01
c)
0.40
d)
0.04
25.
When the baseline of the ECG appears wavy, bumpy, or tremulous, this is called
a)
60-cycle interference
b)
waveform interference
c)
wandering baseline
d)
electrical interference
26.
What consists of five waveforms labeled with the letters P, Q, R, S, and T?
a)
interval
b)
complex
c)
lead
d)
artifact
27.
What waveform represents atrial depolarization?
a)
QRS complex
b)
U wave
c)
T wave
d)
P wave
28.
This tracks the atrial impulse from the atria through the AV node, bundle of His, and right and left bundle branches.
a)
PR interval
b)
QRS complex
c)
P wave
d)
Q wave
29.
This represents the end of ventricular conduction or depolarization and the beginning of ventricular recovery or repolarization.
a)
P wave
b)
PR interval
c)
ST Segment
d)
QR interval
30.
This marks the end of the QRS complex and the beginning of the ST segment.
a)
QT interval
b)
PR interval
c)
J point
d)
T wave
31.
What waveform represents ventricular recovery or repolarization?
a)
P wave
b)
QT interval
c)
ST segment
d)
T wave
32.
This measures ventricular depolarization and repolarization.
a)
QT interval
b)
ST segment
c)
P wave
d)
T wave
33.
What is the easiest way to calculate heart rate especially if the rhythm is irregular?
a)
1500 method
b)
sequence method
c)
10 times method (6-second interval)
d)
5 times method
34.
The normal duration of a P wave is
a)
0.06-0.10
b)
0.36-0.44
c)
0.12-0.20
d)
0.06-0.12
35.
The normal duration of a PR interval is
a)
0.06-0.12
b)
0.12-0.20
c)
0.36-0.44
d)
0.06-0.10
36.
The normal duration of a QT interval is
a)
0.12-0.20
b)
0.06-0.12
c)
0.36-0.44
d)
0.06-0.10
37.
What acts as the heart's primary pacemaker?
a)
SA node
b)
AV node
c)
Bundle of His
d)
Purkinje fibers
38.
This is characterized by a sinus rate below 60 beats/minute and a regular rhythm.
a)
sinus tachycardia
b)
sinus arrhythmia
c)
sinus bradycardia
d)
sinus arrest
39.
What is the sinus rate for sinus tachycardia?
a)
60 beats/minute
b)
40 beats/minute
c)
120 beats/minute
d)
80 beats/minute
40.
What causes sinus arrest?
a)
lack of electrical activity in the atrium
b)
lack of electrical activity in the ventricles
c)
sinus tachycardia
d)
sinus bradycardia
41.
What is the most common cardiac rhythm disturbance, resulting from impulses originating in areas outside the SA node?
a)
premature atrial contractions
b)
atrial arrythmias
c)
atrial fibrillation
d)
atrial flutter
42.
The ability of cardiac cells to initiate impulses on their own is
a)
automaticity
b)
excitability
c)
afterdepolarization
d)
contractility
43.
This originates outside the SA node and usually results from an irritable spot, or focus, in the atria that takes over as pacemaker for one or more beats.
a)
AV node
b)
Bundle of His
c)
Premature atrial contractions
d)
sinus arryhthmias
44.
What is characterized by abnormal P waves that produce saw-toothed appearance?
a)
atrial fibrillation
b)
atrial flutter
c)
Bundle of His
d)
premature atrial contractions
45.
This is caused by conditions that enlarge atrial tissues and elevate atrial pressures.
a)
atrial flutter
b)
atrial fibrillation
c)
premature atrial contractions
d)
Bundle of His
46.
This is defined as chaotic, asynchronous, electrical activity in atrial tissues.
a)
atrial flutter
b)
wandering pacemakers
c)
sinus arrythmias
d)
atrial fibrillation
47.
This is an irregular rhythm that results when the heart's pacemaker changes its focus from the SA node to another area above the ventricles.
a)
atrial flutter
b)
wandering pacemaker
c)
atrial fibrillation
d)
AV node
48.
The first negative deflection that extends below the baseline in QRS complex is
a)
P wave
b)
R wave
c)
S wave
d)
Q wave
49.
Electrical or magnetic interference that alters the EKG tracing is called
a)
art
b)
artifact
c)
disturbance
d)
apex
50.
The heart is located in the chest
a)
in front of the sternum in the mediastinal cavity
b)
in the back of the spine between the lungs
c)
behind the sternum in the mediastinal cavity
d)
behind the sternum and in the back of the spine
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