WorksheetsCh. 8 EKG Exam Review
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
1 Stroke volume is a measure of
a)
The amount of blood pumped with each heartbeat
b)
How many times the heart beats each minute
c)
The amount of oxygen exchanged for carbon dioxide in the lungs
d)
The amount of blood pumped by the heart in one minute
2.
2 Problems with the electrical system of the heart can cause this abnormality:
a)
A lack of blood to pump through the body
b)
Myocardial infarction
c)
Extremely slow heart rate
d)
A lack of oxygen in the blood
3.
3 The rate at which any particular site in the cardiac conduction system conducts electrical impulses is called
a)
Rapid rate
b)
Cardiac rate
c)
Intrinsic rate
d)
Pacing rate
4.
4 The primary pacemaker of the heart is the
a)
Sinus node
b)
AV node
c)
AV junction
d)
Aorta
5.
5 What generally happens when the SA node fails to initiate an electrical impulse?
a)
The individual experiences myocardial infarction.
b)
Another area of the conduction system initiates an impulse.
c)
The individual experiences a sensation of electrical shock.
d)
CPR must be performed.
6.
6 Which of the following is true of the intrinsic rates of conductive areas below the SA node?
a)
Their intrinsic rates are higher than the intrinsic rate of the SA node.
b)
Their intrinsic rates are about the same as the intrinsic rate of the SA node.
c)
Their intrinsic rates are lower than the intrinsic rate of the SA node.
d)
Their intrinsic rates may be higher or lower, depending on the individual.
7.
7 A common name for the isoelectric line on an EKG tracing is
a)
The base segment
b)
The foundation
c)
The baseline
d)
The rhythm strip
8.
8 What are the names of the five waves most commonly seen on EKG strips?
a)
First, second, third, fourth, and fifth waves
b)
A, B, C, D, and E waves
c)
V, W, X, Y, and Z waves
d)
P, Q, R, S, and T waves
9.
9 What EKG feature corresponds to the contraction of the ventricles?
a)
P wave
b)
QRS complex
c)
T wave
d)
U wave
10.
10 What marks a normal ST segment?
a)
It stays at the baseline.
b)
It stays parallel to baseline, but higher.
c)
It stays parallel to the baseline, but lower.
d)
It shows first a positive, then a negative deflection.
11.
11 A QRS interval of 0.20 seconds is considered
a)
Normal
b)
Shortened
c)
Prolonged
d)
An indication of myocardial infarction
12.
12 What is true of the R-R interval in a healthy patient?
a)
It will vary randomly from beat to beat.
b)
It will show a pattern of lengthening and shortening.
c)
It will stay the same.
d)
It will get shorter and shorter until it disappears.
13.
13 How many small blocks on an EKG tracing represent 0.20 seconds?
a)
1
b)
5
c)
8
d)
10
14.
14 Heart rhythm is the ______________ of a patient’s heartbeat and heart rate is the _________________.
a)
Pattern, speed
b)
Speed, pattern
c)
Strength, pattern
d)
Length, speed
15.
15 When using the 6-second method to determine heart rate, what number is multiplied by the number of QRS complexes to determine heart rate?
a)
5
b)
10
c)
15
d)
20
16.
16 The 1500 method is also known as the
a)
6-second method
b)
Large block method
c)
R wave method
d)
Small block method
17.
17 This tool is typically used to measure features on an EKG tracing:
a)
A compass
b)
A tape measure
c)
A ruler
d)
Calipers
18.
18 Which of the following is true of the P wave in a normal heart rhythm?
a)
It is rounded and appears before every QRS complex.
b)
It is inverted and appears before every QRS complex.
c)
It is biphasic and appears before every other QRS complex.
d)
It is pointed and appears before most QRS complexes.
19.
19 When determining the duration of a PR interval, the number of small blocks associated with the interval is multiplied by
a)
0.20
b)
0.02
c)
0.40
d)
0.04
20.
20 The PR interval is measured from the _________________ of the P wave to the point at which the _________________ first leaves the isoelectric line.
a)
End, S wave
b)
Beginning, T wave
c)
Beginning, QRS
d)
End, R wave
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