Electrocardiogram Technician: Module 3

Question 1

12 Lead ECG produces a complete picture from

Answer 1

12 different positions of the electrical activity of the heart,

Question 2

EKG Machine uses how many lead wires?

Answer 2

10 lead wires (six chest and 4 limb leads)

Question 3

Each Lead wire is attached to what that gets attached to a patient?

Answer 3

electrode

Question 4

10 lead wire produce different circuits that are:

Answer 4

Limb leads are Bipolar
Augmented Limb Leads are Unipolar
The Chest Leads are Unipolar

Question 5

What is the reason for only 10 leads?

Answer 5

Enithoven’s Triangle

Question 6

How many leads creates Einthoven’s Triangle?

Answer 6

3 Biopolar Leads

Question 7

You create the Einthoven’s Triangle using?

Answer 7

Leads 1, 2, and 3
AVR, AVL, and AVF

Question 8

Which lead produces records of tracing from left to right arm?

Answer 8

Lead 1

Question 9

Lead 2 produces tracings from?

Answer 9

right arm to left leg

Question 10

Which lead produces tracings from left arm to left leg?

Answer 10

Lead 3

Question 11

AVR measures

Answer 11

from right arm to halfway between left arm. Placed on right arm of patient

Question 12

AVL measures

Answer 12

from left arm to halfway between right arm. Placed on left arm of patient.

Question 13

AVF measures

Answer 13

from midpoint between right arm and left arm to left leg.

Question 14

Chest leads are also known as

Answer 14

precordial leads and measure in only one direction

Question 15

Chest leads are numbers V1 to V6 and

Answer 15

are placed on specific spots of the chest.

Question 16

Chest Leads are placed on specific areas of the heart to

Answer 16

assist clinicans in finding problem areas of the heart

Question 17

Each of the v1 to v6 provides

Answer 17

a slightly different image if the heart.

Question 18

Getting the impulse from the electrode is called

Answer 18

input

Question 19

What is signal processing?

Answer 19

Amplication of signals inside the machine such as augmented leads.

Question 20

Shown on either via a screen and/or printed report

Answer 20

output display

Question 21

Every ECG machine uses its own programming, hard drive and processor.

Answer 21

Computerized Measurements

Question 22

When EKG machine have networking capabilities and can send information to central location or another machine

Answer 22

Communication

Question 23

What is is called when some machines can give you a hint of what is wrong with a patient using

Answer 23

Interpretation

Question 24

What are the ECG Machine Controls?

Answer 24

Speed
Gain
Artifact Filter
Heart Rate Limit Alarm
Stylus Standardizaton Controls
Lead Selector

Question 25

What is the standard speed of the ECG machine?

Answer 25

25 mm per second

Question 26

The speed of the ECG machine changes to run at 50mm/sec when

Answer 26

A patient has a faster heart rate and medical professional directs EKG tech to run the machine faster. A patient is a child because children have a faster heart rate than adults.

Question 27

Changes of the setting of the machine should

Answer 27

Be reported on the ECG report itself.

Question 28

What is the gain control?

Answer 28

Controls height of ECG waveform. ECG machine can sometimes produce a waveform that is too tall and affects waveforms of other readings.

Question 29

Sometimes the waveform may be

Answer 29

too short to read. Standard ECG setting for gain is 10 millimeters per millivolt.

Question 30

If ECG waveform is too tall

Answer 30

lower gain control to 5 millimeters.

Question 31

If ECG waveform is too short

Answer 31

raise gain to 15 millimeters.

Question 32

True or False: You must note changes to gain control on ECG report.

Answer 32

True

Question 33

Abnormalities that should not be seen on an ECG due to outside interference

Answer 33

Artifacts

Question 34

Some types of artifacts are:

Answer 34

Metal Electrical Movement

Question 35

Most atrtifact filters in older machine must

Answer 35

be enabled

Question 36

The artifact filter in newer machines (2000 or later) are

Answer 36

automatically enabled

Question 37

What is the Heart Rate Limit Alarm?

Answer 37

A part of the EKG machine used for continuous monitoring of patients allowing the technician to set a heart rate limit or alarm.

Question 38

The heart rate alarm notifies the clinicians when

Answer 38

a patient's heart rate goes above or below expected limit.

Question 39

What is the stylus standardization controls?

Answer 39

They are no longer used but can be found on older machines and standardization may be used for older machines. Always check with employers and follow manufacturers directions.

Question 40

What is the lead selector?

Answer 40

Used when clinicians want to view one specific lead or view of the heart.

Question 41

Lead selector gives clinicians

Answer 41

a longer view of the lead

Question 42

ECG electrodes come in different

Answer 42

types and shapes

Question 43

The electrodes is the sensors that

Answer 43

pick up electrical activity that the machine will interpret.

Question 44

Most electrodes are

Answer 44

disposable but some facilities use reusable types.

Question 45

The graph paper for the ECG is printed on thermal paper which

Answer 45

can be sensitive to alcohol, plastic, sunlight, x-ray film and certain metals.

Question 46

With ECG graph paper, horizontal readings represent

Answer 46

time

Question 47

With ECG graph paper, vertical readings represent

Answer 47

voltage or amplitude

Question 48

Distance equals

Answer 48

time

Question 49

Height equals

Answer 49

voltage/amplitude

Question 50

For ECG graph paper each large box is made up of

Answer 50

5 x 5 grid of small boxes (25 small boxes)

Question 51

Each large box on ECG graph paper represents a length of

Answer 51

0.2 seconds for 5 boxes 0.04 seconds for 1 box

Question 52

Each large box on ECG graph paper represents a voltage of

Answer 52

5 mm for 5 boxes 1 mm for 1 box