Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

KNR 353 > KNR 353 - Quizzes > Flashcards

KNR 353 - Quizzes Flashcards

1
Q

The inherent rate of the SA node is _____ bpm.

A

60-100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The inherent rate of the AV junction is _____ bpm.

A

40-60

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The inherent rate of the ventricle is _____ bpm.

A

20-40

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The built-in rate of each of the three major areas of the conduction system is referred to as the _____ rate.

A

inherent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What term is used to refer to the process of electrical discharge and the flow of electrical activity?

A

depolarization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If polarizing is considered the ready state, then _____ would be considered the recovery state.

A

repolarization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

After leaving the area of the AV node, impulses go through the _____ to reach the right and left bundle branches.

A

Bundle of His

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Part of the parasympathetic branch of the autonomic nervous system is the _____ nerve.

A

vagus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When stimulated, the _____ branch of the nervous system will increase heart rate, AV conduction, and irritability.

A

sympathetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which cardiac cells are responsible for initiating and conducting pacemaker impulses?

A

electrical cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which is the normal pacemaker of the heart?

A

SA node

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which of the following is NOT a part of the normal cardiac conduction system?

A

coronary sinue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the term for the fail-safe mechanism that allows a lower pacemaker to take over when a higher site fails?

A

escape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following best explains the mechanism called irritability?

A

A lower pacemaker site speeds up to take control of the heart.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does not happen when the sympathetic branch is stimulated?

A

Ventricular conduction slows down.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When an EKG machine is turned on but not yet connected to the patient, the stylus will produce a straight line called the _____ line.

A

isoelectric

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The EKG machine will produce an upright deflection on the graph paper if the flow of electricity is toward the _____ electrode.

A

Positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The horizontal lines on the EKG graph paper measure _____.

A

Voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The vertical lines on the EKG graph paper measure _____.

A

time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The distance between two “tic” marks is _____ sec.

A

3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

On EKG graph paper, the time between two heavy vertical lines is five small boxes, or _____ sec.

A

0.20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

On EKG graph paper, the distance in time between two light vertical lines, or across one small square, is _____ sec.

A

0.04

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

A series of cardiac cycle makes up a(n):

A

EKG rhythm strip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

The deflections above and below the isoelectric lines are referred to as:

A

waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

The short period of electrical inactivity between the P wave and the start of the QRS complex is called the:

A

PR segment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

The PR interval begins at the first sign of the P wave and ends at the first sign of the next deflection, which is called the:

A

QRS complex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

The PR interval reflects all _____ activity.

A

atrial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

No impulse can cause depolarization during the _____ refractory period.

A

absolute

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Which of the following is NOT a normal QRS measurement

A

Anything above 0.12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

A strong impulse can cause a premature abnormal discharge during the _____ refractory period.

A

relative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Which of the following best describes the elements of a single cardiac cycle?

A

P wave, PR segment, PR interval, QRS complex, and T wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

The heart’s normal rhythm usually originates in the:

A

SA node

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

To find out if a rhythm is regular or irregular, measure the _____ across the entire strip.

A

R-R intervals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

When a P wave originates in the SA node, it is expected to be smooth, rounded, and _____ in Lead II.

A

upright

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

The standard systematic approach to arrhythmia interpretation consists of all of the following EXCEPT:

A

refractory periods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

The cardiac activity that takes place above the ventricles is referred to as _____ activity.

A

supraventricular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

If a rhythm is regular, the MOST accurate way to calculate heart rate is to count the number of small squares between two R waves and divide the total into:

A

1500

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

P waves usually appear before:

A

QRS complexes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

A major EKG finding that can help you distinguish between supraventricular and ventricular rhythms is the width of the:

A

QRS complex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

A Normal Sinus Rhythm should have a QRS of less than _____ sec.

A

0.12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

The QRS complex is indicative of ventricular _____ and thus should correspond to the patient’s pulse.

A

depolarization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Which of the following is the LEAST accurate way to determine heart rate?

A

Count the number of QRS complexes in a 6-sec strip and multiply by 10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Which part of the conduction system has the slowest conduction speed, and is thus responsible for slowing down impulses until the heart is ready to receive them?

A

AV node

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

If a rhythm is IRREGULAR, the best way to determine rate is to:

A

count the number of QRS complexes in a 6-sec strip and multiply by 10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Which of the following best describes a “lost” P wave?

A

one that is obscured because it falls on other waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

The P waves are the first waves you should look for when analyzing a rhythm strip because:

A

they are usually very regular and thus easy to find

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

If a QRS complex measures less than 0.12 sec., you know that it did NOT originate in the:

A

ventricles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

A rhythm that is “regularly irregular” would describe a rhythm that:

A

has a pattern to its irregularity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

In Normal Sinus Rhythm, the heart rate is _____ bpm.

A

60-100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

In Normal Sinus Rhythm, the PR interval must fall between _____ sec.

A

0.12-0.20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

A Normal Sinus Rhythm has all of the following characteristics EXCEPT:

A

the R-R intervals vary

51
Q

The rate for Sinus Bradycardia is _____ bpm.

A

less than 60

52
Q

The term “tachycardia” means:

A

fast heart

53
Q

The rate for Sinus Tachycardia is _____ bpm.

A

greater than 100

54
Q

In Sinus Arrhythmia, the heart rate is usually _____ bpm.

A

60-100

55
Q

In Sinus Arrhythmia, the rate changes with the patient’s:

A

respirations

56
Q

In Sinus Arrhythmia, the R-R intervals are

A

irregular

57
Q

For Sinus Tachycardia, the QRS complex should be less than _____ sec.

A

0.12

58
Q

For all rhythms that originate in the sinus node, you would expect that P wave in Lead II to be:

A

upright and uniform

59
Q

For all rhythms that originate in the sinus node, you would expect all of the following EXCEPT:

A

inverted P waves following the QRS complexes

60
Q

When a sinus rhythm has a QRS complex of 0.12 sec. or greater, you know that this is an abnormality and would note that it has:

A

a wide QRS

61
Q

The presenting problem with Sinus Bradycardia is that”

A

the rate is too slow

62
Q

The presenting problem with Sinus Tachycardia is that:

A

the rate is too fast

63
Q

The presenting problem with Sinus Arrhythmia is that”

A

the rhythm is irregular

64
Q

Atrial rhythms originate in the:

A

atrial pathways

65
Q

Which of the following does NOT describe an atrial P wave?

A

it is uniformly rounded

66
Q

An atrial arrhythmia that occurs when the pacemaker role switches from the SA node to the atria and back again is called:

A

wandering pacemaker

67
Q

A single beat that arises from a focus outside of the SA node is called a(n):

A

ectopic beat

68
Q

An early (premature) ectopic beat could be an indication of:

A

irritability

69
Q

Atrial Tachycardia usually has a rate of _____ bpm.

A

150 - 250

70
Q

It is very common for the P waves in Atrial Tachycardia to be:

A

hidden in the T wave

71
Q

The rhythm in which the atrial waves are seen as a sawtooth pattern is called:

A

atrial flutter

72
Q

In the rhythm called “atrial flutter,” the atrial rate is usually in the range of _____ bpm.

A

250 - 350

73
Q

The rhythm in which ALL atrial activity is depicted as chaotic undulations of the baseline is called:

A

Atrial FibrillationI

74
Q

In Atrial Fibrillation, the rhythm is:

A

grossly irregular with no pattern

75
Q

The QRS in Atrial Fibrillation should be _____ sec.

A

less than 0.12

76
Q

The atrial rate in Atrial Fibrillation is _____ bpm.

A

greater than 350

77
Q

Atrial Fibrillation has:

A

no discernible P waves

78
Q

When you encounter a rhythm that is irregular with no mappable P waves, you should suspect:

A

Atrial Fibrillation

79
Q

In Atrial Fibrillation, when the ventricular rate is over 100 bpm, it is said to be:

A

uncontrolled

80
Q

A Premature Atrial Complex is:

A

a single ectopic beat

81
Q

The QRS complex is all atrial rhythms is expected to be:

A

normal

82
Q

The ventricular rate for PACs is defined as:

A

depends on underlying rhythm

83
Q

In Wandering Pacemaker, the heart’s pacemaker site shifts between:

A

SA node and atria

84
Q

In a junctional rhythm, the pacemaking impulses originate in the:

A

AV junction

85
Q

The mechanism in which the atria are depolarized with a backward flow of electricity is called _____ conduction.

A

retrograde

86
Q

In Lead II, the junctional impulse that depolarizes the atria is traveling away from the positive electrode, thus producing a P wave that is:

A

inverted

87
Q

A Premature Junctional Complex is a:

A

single ectopic beat

88
Q

The rate for Junctional Escape Rhythm is _____ bpm.

A

40-60 bpm

89
Q

In a Junctional Escape Rhythm, the QRS complex is _____ sec.

A

less than 0.12

90
Q

The rate for Junctional Tachycardia is _____ bpm.

A

100-180 bpm

91
Q

The rate for an Accelerated Junctional Rhythm is _____ bpm.

A

60-100 bpm

92
Q

Which of the following is NOT true about Junctional Tachycardia?

A

it is irregular in a pattern of grouped beating

93
Q

In junctional rhythms, the P wave will always be:

A

inverted

94
Q

A basic rule of electricity is that current flowing toward a positive electrode (or away from a negative electrode) will produce a deflection that is:

A

upright

95
Q

Which of the following is NOT true about the P wave in all junctional rhythms?

A

It is unrelated to the QRS

96
Q

Which of the following terms DOES NOT apply to Premature Junctional Complex?

A

suppression

97
Q

The normal inherent rate of the AV junction is:

A

40-60 bpm

98
Q

Which of the following arrhythmias is NOT in the category called Supraventricular Tachycardia?

A

Accelerated Junctional Rhythm

99
Q

When a rhythm is regular, with narrow QRS complexes, but firing at a rate so fast that you can’t distinguish the P waves to identify it more accurately, you can call the rhythm:

A

supraventricular tachycardia

100
Q

A Premature Ventricular Contraction is a(n):

A

single irritable beat

101
Q

A compensatory pause is a(n):

A

delay following a PVC

102
Q

Unifocal PVCs:

A

look like each other

103
Q

Multifocal PVCs:

A

they arise from multiple foci, they indicate increased irritability, they have a variety of configurations

104
Q

Two PVCs attached together are referred to as:

A

a couplet

105
Q

PVCs falling in a pattern of every other beat are referred to as:

A

bigeminy

106
Q

When PVCs appear in a pattern where every third beat is a PVC, the pattern is called:

A

trigeminy

107
Q

The heart rate for Ventricular Tachycardia is _____ bpm.

A

150-250 bpm

108
Q

The QRS complexes in Ventricular Fibrillation are:

A

not measurable

109
Q

The term “agonal” is used to describe a:

A

lethal arrhythmia

110
Q

The rate for an Idioventricular Rhythm is _____ bpm.

A

20-40 bpm

111
Q

The rhythm that is the result of the total absence of cardiac electrical activity is referred to as:

A

asystole

112
Q

A basic rule for ventricular arrhythmias is that the QRS will be:

A

0.12 sec or greater

113
Q

Ventricular Tachycardia that has a rate below 150 is identified as?

A

Slow Ventricular Tachycardia

114
Q

The PR interval in Ventricular Tachycardia is:

A

not measured

115
Q

Ventricular Tachycardia is caused by

A

an irritable focus within the ventricles

116
Q

Which of the following is NOT true about Ventricular Tachycardia?

A

it has a constant PRI

117
Q

When an ectopic falls during the vulnerable phase of the cardiac cycle, it is called:

A

R on T phenomenon

118
Q

Which of the following types of PVCs is NOT considered a particular warning for increased myocardial irritability?

A

interpolation

119
Q

Idioventricular Rhythm can be described as all of the following EXCEPT:

A

an irritable rhythm

120
Q

Which of the following is NOT caused by irritability?

A

Idioventricular Rhythm

121
Q

Which of the following is a feature of Asystole?

A

no measurable waves or complexes

122
Q

Which of the following is NOT a lethal arrhythmia?

A

Premature Ventricular Complexes

123
Q

Which of the following is NOT a typical feature of a Premature Ventricular Complex?

A

preceded by an upward P wave

124
Q

Which of the following is NOT a sign of myocardial irritability?

A

Asystole

125
Q

Which of the following is the premier diagnostic feature of Ventricular Fibrillation?

A

no measurable waves or complexes

KNR 353 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions