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MAS200 > Principles of Electrocardiography > Flashcards

Principles of Electrocardiography Flashcards

1
Q

Valve between the right upper and lower chambers of the heart

A

Tricuspid Valve

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2
Q

Valve between the left upper and lower chambers of the heart

A

Mitral valve

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3
Q

Another name for bicuspid valve

A

Mitral valve

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4
Q

Use of ultrasonic waves directed through the heart to study the structure and motion of the heart

A

Electrocardiography (ECHO)

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5
Q

Blood returns from the head, neck and upper extremities through

A

Superior vena cava

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6
Q

Pacemaker of the heart

A

Sinoatrial node

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7
Q

The atrioventricular bundle is the same as

A

bundle of his and AV node

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8
Q

State where the cardiac cells are recovering

A

Repolarized state

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9
Q

What state creates electrical activity that can be picked up on the ECG tracing

A

depolarized and repolarized state

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10
Q

Upward movement away from the baseline

A

deflection

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11
Q

a period of time between two points or events

A

interval

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12
Q

The PR segment

A

follows the P wave and appears as an isoelectric line. Created as the impulse moves slowly through the AV node. Is the time between the end of atrial depolarization and the start of the ventricular depolarization.

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13
Q

Q Wave

A

negative deflection represents interventricular septal depolarization.

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14
Q

R Wave

A

large triangular shaped wave reflects depolarization of most of the ventricular walls.

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15
Q

S wave

A

the final depolarization of ventricular wall.

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16
Q

J Point

A

where the QRS complex ends and the ST segment starts.

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17
Q

Structure where repolarization of the ventricles are created

A

T wave

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18
Q

Interval represents atrial depolarization

A

PR interval

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19
Q

A resting 12 lead ECG

A

Uses 10 electrodes and lead wires

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20
Q

Lead I is created by

A

Right arm to left arm

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21
Q

Lead II is created by

A

Right arm and left leg

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22
Q

Standard leads

A

Created from a measurement of current traveling from a negative pole to the positive pole.

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23
Q

Augmented leads

A

Provide information on the vertical or frontal plane of the heart. These unipolar leads are augmented or increased in size on the tracing. Augmented leads use the right arm (RA), left arm (LA) and left leg (LL) electrodes.

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24
Q

Horizontal lines on EKG paper

A

measure the time

25
Q

When the paper speed is set at 25 mm/second

A

each small box is 0.04 second and each large box equals 0.2 second.

26
Q

To determine the width and time of the waveform

A

count the small boxes horizontally from the start to the finish of the wave

27
Q

Electrodes are single-use disposable adhesive tabs

A

placed on the skin

28
Q

The skin is

A

a poor conductor of electricity

29
Q

Electrodes contain an electrolyte gel

A

that helps pick up the electrical impulses

30
Q

As the impulses make their way to the surface of the body

A

the electrolyte gel helps to conduct the impulses into the lead wires

31
Q

Chart speed

A

regulates the speed of the paper during the recording - 25 mm/s
for a very fast rate: increase speed to 50 mm/s
for a very slow rate: reduce rate to 5 or 10 mm/s

32
Q

Gain or sensitivity

A

regulates height (amplitude) of the tracing

33
Q

Default chart speed

A

25 mm/s

34
Q

V1

A

red - fourth intercostal space (ICS) - right sternal edge

35
Q

V2

A

yellow - fourth ICS - left sternal edge

36
Q

V3

A

green - midway between V2 and V4

37
Q

V4

A

blue - fifth ICS midclavicular line

38
Q

V5

A

orange - same horizontal plane as V4 at the anterior axillary line

39
Q

V6

A

purple - same horizonal plane as V4 - midaxillary line

40
Q

Dextrocardia

A

place chest electrodes on the right side of the chest using the same ICS spacing and landmarks. Switch right and left limb lead wires.

41
Q

Wandering baseline

A

Upward and downward movement of the waveform and the isoelectric lines shift locations

42
Q

Interrupted baseline

A

looks normal at the beginning, but then goes all over when the electrical connection is interrupted.

43
Q

Somatic tremor

A

involuntary and voluntary movement

44
Q

AC interference

A

electrical interference

45
Q

Heart block

A

disruption or a slowing of the electrical impulse through the heart

46
Q

Bachmann’s bundle

A

a specialized intermodal tract that takes the impulse to the left atrium

47
Q

Isoelectric line

A

a period of time on an ECG with no electrical activity.

48
Q

Lead III

A

Left leg to left arm

49
Q

Lead II

A

Right arm to left leg

50
Q

Lead I

A

Right arm to left arm

51
Q

Chest electrode that is placed on the same horizontal plane as V4 at the midaxillary line

A

V6

52
Q

Artifact that occurs if electrodes are placed on bony areas or with breathing movement

A

Wandering baseline

53
Q

Dirty or dried or expired electrodes

A

Wandering baseline

54
Q

Turning on the baseline filter will help decrease this type of artifact

A

Wandering baseline

55
Q

Cell phones will make this type of artifact

A

AC interference

56
Q

Help patient relax
Remind the patient to not move or talk
Watch to see if there is a pattern with involuntary movement

A

Somatic tremor

57
Q

Normal rhthym

A

sinus rhythm

58
Q

No Viagra, Cialis or Levitra for 48 hours
No smoking or caffeine or alcohol for 3 hours
Patient signs consent

A

Exercise stress test

MAS200 (1 decks)

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