Chapter 5 Test

Question 1

Deplorization

Answer 1

change in electrical charge from negative to positive. Each heartbeat begins with one small area of the heart muscle deplorizing

Question 2

Electrocardiogram

Answer 2

shows the electrical activity of the heart. The heart electrical activity causes the muscle contractions that pump blood

Question 3

Electrodes

Answer 3

EKG machines are connected patients using

Question 4

Lead wires

Answer 4

electrodes are attached

Question 5

Replorization

Answer 5

is a change in electrical charge from positive back to negative

Question 6

Leads

Answer 6

different views that provide different information about the heart.

Question 7

EKG tracing

Answer 7

records this activity on a graph paper that moves through the machine at a fixed rate

Question 8

Echocardiogram

Answer 8

uses sound waves to visualize the heart. used specifically by trained technicians

Question 9

Voltage

Answer 9

EKG machines measure small differences in electrical charge

Question 10

Telementry

Answer 10

monitoring is used in large facilities. It monitors a patients EKG on a ongoing basis

Question 11

Event monitors

Answer 11

record the hearts electrical activity when the patient presses button.

Question 12

Ambulatory monitoring

Answer 12

is used when a patient is not hospitalized and the provider needs information about the heart over a longer period time

Question 13

Holtev monitors

Answer 13

usually placed on the patient in a medical office and removed after 24-48 hours

Question 14

Mobile cardiac telementry

Answer 14

a type of ambulatory monitoring that automatically alerts a healthcare professional if an irregular heart rate or rhythm is detected

Question 15

12-Lead EKG

Answer 15

screening and diagnosis for EKG test

Question 16

12 lead

Answer 16

EKG is used during and stress test.

Question 17

Artifact

Answer 17

tracing will be accurate and not shown interference or distortion

Question 18

Gain control

Answer 18

an EKG machines can be used to change the senstivity of the machine

Question 19

Stylus

Answer 19

gain is measurement of how high or low. (the part of the machine that makes the marks on paper).

Question 20

Standard gain

Answer 20

default gain setting for an EKG machines is 10mm/mV. This means that a a/millivolt electrical signal will produce a mark on the EKG tracing that measures 10 millimeters

Question 21

12 lead EKG

Answer 21

includes a fourth row called a rhythm strip which is a 12 second tracing of lead 11. Lead 11 is the most used to examine the patients heart rate and rhythm.

Question 22

Augmented limbleads

Answer 22

leads aVR, aVL and aVF

Question 23

Unipolar leads

Answer 23

three electrodes that are the same is leads l,ll,lll

Question 24

Limbleads

Answer 24

leads l,ll,lll

Question 25

Bipolar leads

Answer 25

measure different in voltage (electrical force) between a electrically positive point an electrically negative point.

Question 26

Unipolar leads

Answer 26

leads Vl, V2, V3, V4, V5 and V6 are precordial leads.

Question 27

Wilson's central terminal

Answer 27

positive input from each of the chest electrodes measured against a reference point

Question 28

Number of leads

Answer 28

3 Continuous monitoring of heart rhythm 5 Continuous monitoring of heart rhythm telementry monitoring ambulatory 12 Resting 12 lead EKG, stress test

Question 29

5 lead applications

Answer 29

require five electrodes.

Question 30

Lead wires

Answer 30

usually color coded. They are labeled with the name of the proper electrode