FINALS - Ch. 49 (ECG & PFT)

Question 1

How are the heart’s impulses detected?

Answer 1

Through electrodes placed on the patients body

Question 2

How many electrodes are required for routine 12-lead electrocardiography?

Answer 2

10

Question 3

What is the usual patient monitoring period for a Holter monitor?

Answer 3

24 hrs

Question 4

Which electrode is used as a reference point for placing the other precordial electrodes?

Answer 4

V1

Question 5

Before performing an ECG, what information should you share with your patient?

Answer 5

The patient will not experience any pain and the machine will not shock her

Question 6

Why must an MA know how to interpret an ECG?

Answer 6

A problem might require immediate attention

Question 7

What is the common placement for limb electrodes?

Answer 7

Upper arms and calves

Question 8

Which component of an ECG tracing represents ventricular reploarization?

Answer 8

T wave

Question 9

The process by which a graphic pattern is created from electrical impulses generated within the heart as it pumps

Answer 9

Electrocardiography

Question 10

What are intercostal space?

Answer 10

Spaces between the ribs

Question 11

Where should electrode V1 be placed?

Answer 11

In the fourth intercostal space to the right of the sternum

Question 12

For which patient is the MD most likely to order ambulatory electrocardiography?

Answer 12

A pt with intermittent chest pain

Question 13

What is an electrocardiograph?

Answer 13

It is the instrument that records electrical conduction of the heart

Question 14

What is NOT a cause of a wandering baseline?

Answer 14

A bad electrode

Question 15

What results in a flat line on the ECG tracing?

Question 16

The process by which a graphic pattern is created from the electrical impulses generated in the heart as it pumps

Answer 16

Electrocardiography

Question 17

Where does the transmission of electrical impulses in the heart begin?

Answer 17

SA node

Question 18

What is the primary pacemaker of the heart?

Answer 18

SA node

Question 19

What delays the electrical impulse for muscle contraction, giving the atria time to contract completely and fill the ventricles with blood?

Answer 19

AV node

Question 20

What is the electrical impulse that initiates a chain reaction resulting in contraction?

Answer 20

Depolarization

Question 21

The instrument that measures and displays the electrical impulses responsible for the cardiac cycle

Question 22

The electrical impulses responsible for the cardiac cycle that appear on an electrocardiogram as peaks and valleys

Answer 22

Deflections

Question 23

The different views recorded on an electrocardiogram that are produced by the electrical activity of the heart are what?

Question 24

An instrument used to measure the air taken in by and expelled from the lungs

Answer 24

Spirometer

Question 25

How many maneuvers should be attempted before a pulmonary function test is stopped?

Answer 25

8

Question 26

What diagnostic test is MOST likely to be performed if a patient is experiencing shortness of breath?

Answer 26

PFT

Question 27

What is the purpose of PFT?

Answer 27

To evaluate lung volume and capacity

Question 28

Which peak flow zone indicates that large airways are beginning to narrow?

Answer 28

Yellow zone

Question 29

How long should the patient maneuver the spirometer?

Answer 29

Minimum 6 seconds

Question 30

What is a measurement taken to determine the amount of air that can be quickly forced from the lungs?

Answer 30

Peak expiratory flow rate

Question 31

What reading on the peak flow meter is considered to be the peak flow rate?

Answer 31

The highest reading

Question 32

What measures and evaluates a patients lung capacity and volume?

Answer 32

Pulmonary function test

Question 33

Why is it important to calibrate the spirometer?

Answer 33

To ensure accurate readings

Question 34

If the patient has good control of her asthma, her peak flow rate is in which zone?

Answer 34

Green zone

Question 35

The greatest volume of air that can be expelled when a person performs rapid, forced expiration

Answer 35

Forced vital capacity

Question 36

PFTs are useful in monitoring which condition?

Answer 36

COPD

Question 37

What is the purpose of pulmonary function testing?

Answer 37

To evaluate lung volume and capacity