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Flashcards in EKG Final Review Deck (124):
1

Which of the following chest leads are placed on the chest using specific anatomical landmarks?

V1, V2, V4, V5, V6

2

Which of the following can cause extreme right axis deviation?

Dextrocardia

3

Which of the following is a characteristic of P-P intervals in all heart block dysrhythmias?

Regular

4

What is recorded on the ECG strip?

The electrical activity of the heart

5

To locate the intercostal space (ICS), the ECG technician feels for the bony part of the rib cage for.....

False

6

In a RBBB, the QRS is:

Positively deflected

7

Electrical safety is maintained while performing an ECG by all of the following EXCEPT

Removing the plug from the electrical outlet by pulling it out by the prong connection

8

Which of the following is NOT implied consent?

Pt signing a consent form for a treadmill stress test

9

Atrial fibrillation shows chaotic disorganized activity between QRS complexes

True

10

About how many inches of complexes should you run for leads I, II and III?

About 8 to 10 inches

11

The LCD display is an area on the 12 lead ECG machine where the following information is available to view

All of the above

12

Which layer is prone to disruption when atherosclerotic plaque is ruptured and peels away?

Tunica intima

13

The echocardiogram uses sound waves to create an image of the walls and chambers of the heart and is.. valves

False

14

When the pacemaker delivers ventricular pacing, the pacing spike will be followed by a wide QRS complex, which looks similar ...

LBBB

15

The indicators of myocardial ischemia are

ST segment depression, T wave inversion

16

Which one of the following is NOT a reason to use an ambulatory monitor?

To evaluate oxygen utilization by the myocardium

17

What device enables lay rescuers to help a pt with sudden cardiac arrest?

Automatic external defibrillator (AED)

18

The first electrocardiograph was invented by

Wilhelm Einthoven

19

A BBB must be considered when the QRS complex measures:

0.12 seconds or greater

20

What is the heart's response to stimulation of the Vagus nerve?

Slows down

21

Fast, irregular heartbeat sensations felt by the pt, which may or may not be associated with complaints of chest pain

Palpitations?

22

What should you do if you recognize ventricular tachycardia on the ECG monitor?

All of the above

23

What factor on a pacemaker tracing is similar to the measurement of the PR interval on a nl rhythm tracing

Atrioventricular delay

24

The function of the heart is to pump blood to and from all the tissues of the body

True

25

One of the primary branches of the R main coronary artery providing blood to the posterior wall of the heart is the

Posterior descending artery

26

Occlusion of the circumflex artery leads to cardiogenic shock and sudden death and is often referred to as the "widow maker"

False

27

The V5 lead is placed midway between V4 and V6 on the L anterior axillary line

True

28

____ Causes the inverted P wave morphology found with junctional rhythms?

Electrical impulses are coming from the AV node instead of the SA node, causing depolarization of the atria to f....

29

What is the origination point of a supraventricular tachycardia?

Above the ventricles

30

If the pt's normal heart rate is 60 and it now 140, the pt probably will not experience any sx's of just...

False

31

What measurement on the ECG tracing represents how long it takes for the current to travel through the ventricular myocardium

QRS duration

32

What medical conditions place pressure on the atria, causing atrial dysrhythmias to occur?

Myocardial infarction, valvular problems, neurological influences.

33

The QRS measurement in all junctional dysrhythmias is within normal limits, between 0.06 and 0.10 seconds.

True

34

Following an exercise stress test, the pt will have a cooling off period. How long will this last and what should you do

10-15

35

Pts may experience chest pain due to what condition that is not cardiac in origin?

All of the above: Gallbladder pain, inflammation of the lungs, and gastric or esophageal irritation

36

How many people in the United States suffer form angina

10 million

37

An impulse that occurs too soon after the preceding impulse, causing a period when no other impulses can occur in the ...

Blocked or non-conducted impulse

38

The two most common types of ambulatory monitoring are:

Continuous and intermittent

39

PVC's that occur during the normal R-R internal without interrupting the normal cycle are known as:

Interpolated

40

What is the most common;y used stress test protocol?

Bruce protocol

41

Which heart block dysrhythmia has regular P-P and R-R intervals that both occur at the same rate?

First degree heart block

42

Which leads view the septal wall?

V1 and V2

43

Junctional rhythms are suggestive of more serious conditions with the electrical conduction system in the heart

True

44

Telemetry monitoring is the transmission of an electrical signal to a monitoring station, similar to a transmitter radio

True

45

Which landmark is an imaginary line on the chest that runs vertically through the enter of the clavicle?

Midclavicular line

46

Which atrial dysrhythmia has a clearly changing P wave and a heart rate of 101 to 150 bpm

Multifocal atrial tachycardia (MAT)

47

When the pt has a LBBB, the L conduction pathway is blocked. The current travels down the L then R ventricle to contract

False

48

What would you tell a pt who asked you how long a thallium stress test would last?

4-5 hours

49

An ectopic focus originating above the ventricles in the atria or junctional region of the heart is:

Supraventricular

50

Which type of ambulatory monitoring is performed in a hospital

Telemetry

51

The usual setting for the artifact filter is

40 Hz

52

Every atrial spike should have a P wave after it to indicate that the electrical current is causing the cells to depolarize

True

53

In sinus dysrhythmia, if the heart rate decreases to 40 to 50 bpm, the pt may complain of

Palpitations, dizziness

54

What sx's would you observe in a pt with first degree AV block

The pt should have a nl cardiac output and no sx's

55

Which so the following is not considered a bipolar lead?

AVR

56

When is an atrial pacemaker used alone?

When the conduction system from the AV node through the ventricles is intact and functioning

57

Which heart block dysrhythmia has a PR interval that gets progressively longer until the QRS is dropped, and after...

Second degree AV block, type I

58

Which of the following sx's are signs of unstable angina

All of these: chest pain is more frequent or severe, chest pain occurs with less exertion or lasts longer than usual, chest pain does not respond to medications as it did before

59

The abnormal thickening of the ventricular wall due to chronic pressure overload that is often caused by hypertension is known as

Hypertrophy

60

A strong bleach solution and stiff bristle brush to clean the equipment case, cover and control panel of the ECG machine

False

61

The tricuspid and mitral valves are known as ___ because they separate the atria from the ventricles.

Atrioventricular valves

62

How would frequent premature atrial complexes affect a pt with coronary artery disease?

Low cardiac output

63

Which pacemaker complication shows a pacing spike, but no waveform immediately following it?

Loss of capture

64

What is the difference between ventricular tachycardia and ventricular fibrillation

Ventricular fibrillation is chaotic in appearance

65

Together, the contraction and relaxation of the heart make up:

The cardiac cycle

66

You will be able to determine the atrial rate in atrial fibrillation

False

67

Uncontrolled atrial fibrillation has a heart rate between 60 -100 bpm

False

68

The ability of the heart cells to receive and transmit an electrical impulse is known as:

Conductivity

69

Which ventricular dysrhythmia is often called "the straight or flat line" of rhythms?

Asystole

70

Which of the following conditions would NOT prevent a pt form participating in exercise electrocardiography

Diabetes

71

When the paper is 25mm/sec, there are how many boxes per minute

150 boxes per minute

72

Idioventricular rhythms occur when the sinoatrial and junctional pacemakers fail to initiate an impulse

True

73

A normal QRS complex is 0.12 to 0.20 seconds in length

False

74

How are agonal rhythm and asystole the same

All of the above: In both rhythms the pt will be unconscious, both rhythms have an absence of P waves, both rhythms are life threatening and require basic and advanced life support

75

First degree heart block can lead to decreased cardiac output

False

76

You observe a wide QRS complex in lead II. Which lead should you check to evaluate the location of the bundle branch block

Lead V1

77

Why is it unlikely that a pt would have sx's of low cardiac output with accelerated junctional rhythm?

The heart rate is the same as normal sinus rhythm

78

Which of the following is not a possible cause of left axis deviation?

Anterolateral wall MI

79

Which of the following medications would most likely be stopped prior to a treadmill stress test

Beta blocker

80

With second degree AV block, type I

Not all of the P waves are followed by a QRS complex

81

___ rhythm occurs when the SA node fails to initiate the electrical activity and one of the backup pacemakers sites takes over

Escape rhythm

82

What changes occur in the eCG tracing with a STEMI

All of the above

83

First degree heart block is not a true block; there is delay around the AV node, but each impulse is eventually conducted

True

84

WAP is a normal finding in children, older adults, and well conditioned athletes. It may also be found in pts with

Organic heart disease and drug toxicity

85

The advantage of continuous monitoring over intermittent monitoring

Continuous monitoring provides a complete tracing and records before, during, and after the pt activates...

86

A normal PR interval is 0.06-0.10 seconds in length

False

87

If disposable electrodes are left on a pt's sin for more than two readings, inaccurate ECG tracings may result

True

88

Rhythm? or regularity of atrial contraction is evaluated by assessing the regularity or irregularity of the R waves

False

89

Which three groups of pts present with complaints or problems that are atypical?

Women, elderly, diabetics

90

Steps in evaluating a pacemaker ECG tracing include all of the following except

What is the ration of paced beats to own beats within 1 minute

91

Name the two semilunar valves

Aortic, pulmonary

92

Which of these pts would have Persantine thallium stress test?

68 year old pt confined to his bed after cardiac surgery

93

With junctional rhythms, the electrical current is initiated form the

AV junction

94

BBB can be seen in the

Precordial leads

95

The effect of junctional tachycardia on the pt depends on

The rate of the rhythm

96

The ECG waveform is indicative of

How the heart is functioning electrically

97

The pt with junctional escape rhythm has a faster than normal heart rate

False

98

The advantage of atrioventricular pacing?

It mimics the normal cardiac conduction system and allows the atria to contract completely prior to the ventricles to ...

99

How do you determine how many pretest recordings of BP and 12 lead ECG's you obtain

Check with the physicians orders

100

Frequently, second degree AV block, type I, will progress to third degree AV block

False

101

Atrial dysrhythmia has a cardiac complex that occurs too soon, has a positively deflected P wave, ...

Premature atrial complexes (PAC)

102

... Instruct the pt when the appointment is made in preparation for an exercise electrocardiography. Which of the ....

Check the order and instruct pts regarding medications they should or should not take prior to the procedure

103

When estimating the heart rate with the 6 second method, you must locate 6 seconds on rhythm strip, ...

10

104

What is the normal, inherent rate of the AV node?

40-60 bpm

105

BBB

Is diagnosed by analyzing only the width of the QRS complexes

106

Identify the rhythm using these criteria: Regular rhythm, ventricular and atrial rates are 60-100 bpm, P wave precede....

NSR

107

....P-P interval is irregular with all heart blocks

False

108

....unction of the BBB is to

Distribute the electrical impulse through the myocardium

109

Which additional test is not likely to be ordered if the ambulatory monitor results are abnormal

Pulmonary function test

110

The outermost layer of the heart is the

Epicardium

111

In which of the heart block dysrhythmias are there more P waves than QRS complexes

All of these: third degree AV block, second degree AV block, type I, second degree AV block, type II

112

Every instance of ST segment elevation is indicative of myocardial injury

True

113

QRS duration measurement represents the time it takes for:

The ventricles to depolarize or contract

114

Name one of the questions necessary to analyze a P wave of the ECG tracing

Does each P wave have a QRS complex following it?

115

ECG waveform provide basic information about a pts's condition

True

116

Which heart rate method is the most accurate with regular rhythm

1500 method

117

The function of the bundle branch system is to

Purkinje fibers

118

What term means the ability of the heart to initiate an electrical impulse without being stimulated by another or independent source

Automaticity

119

The period of time between ventricular depolarization and the beginning of ventricular depolarization

False

120

For women, the hormones produced during child bearing years increase the risk of cardiac problem

False

121

If a pt has a L ventricular hypertrophy, the axis deviation will be

Left

122

With third degree AV block , there is complete block at a or below

True

123

What sx's would you observe in a pt with first degree AV block

The pt should have nl cardiac output and no sx's

124

V1 and V2 view

Left coronary, septal branch