Chapter 49

Question 1

After preparing the ECG machine, you explained the procdure to Mrs. thomas, connected the electrodes and began tracing, as shown in the picture, you rechcked the electrodes and tgey are all placed corectly. None of the wires are loose. However, you notice that Mrs. thomas skin smells fragrent, as though she has used body lotion recently, which of the following describes the problem its possible cause

Answer 1

Wandering baseline caused by lotion on the skin, re prep the skin with alchohol

Question 2

Ac interference can be prevented by

Answer 2

Making sure lead wires are not crossed and following the contour of the body

Question 3

Electrical impulse sensors used to obtain an electrocardigram are called

Answer 3

Electrodes

Question 4

Pulmonary function test are useful in monitoring which condition

Answer 4

chronic obstructive pulmonary disease

Question 5

Electrodes for limb leads should be attached to

Answer 5

Fleshy portion of the limbs

Question 6

Where does the transmission of electrical impulse in heart begin?

Answer 6

SA node

Question 7

The dysrhythmia is which P waves cannot be intensified because of rapid multiple electrical signals that fire from areas of the atria other than the SA node is known as

Answer 7

atrial fibrillation

Question 8

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

Answer 8

forced vital capacity

Question 9

If a lead does not appear on a ECG tracing, what step should be taken before repeating the tracing?

Answer 9

Reconnect the wire

Question 10

Which of the following dysrythmia is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?

Answer 10

PVC’s

Question 11

The time it takes for electrical impulses from the SA node to the AV node is the

Answer 11

P-R interval

Question 12

Which of the following meausures the patients response to a constant or increasing worl load

Answer 12

Exercise ECG

Question 13

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

Answer 13

Electrocadiogram

Question 14

What is the arithmia pictured here?

Answer 14

Ventricular fibrillation

Question 15

How is somatic interfernce on a ECG tracing prevented?

Answer 15

remind the patient to lie still and refrain from talking

Question 16

Which of the following is a record of the waves of electrical impulse responsible for the cardiac cycle?

Answer 16

Electrocardiogram

Question 17

Which of the following is used to assess the eletrical activity of a ptients heart over a 24hr period of normal activity?

Answer 17

ambulatory monitoring

Question 18

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

Answer 18

Green zone

Question 19

Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?

Answer 19

Depolarization

Question 20

What is the arrhythmia pictured here?

Answer 20

PVC’s

Question 21

The impulse that travels through both ventricles is the

Answer 21

S wave

Question 22

Which of the following represents the time between contraction of the ventricles and recovery

Answer 22

S-T segment

Question 23

Which of the following would be included in the patients instructions reguarding ambulatory monitoring?

Answer 23

Instruct the patient to record all activities, emotions, and medications taken

Question 24

Which control used to adjust the position of the stylus on the ECG

Answer 24

centering control

Question 25

Which test is utilized to measure the hearts conduction system during exercise when the deamand for oxygen is increased?

Answer 25

stress testing