Chapter 49

Question 1

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

Answer 1

electrocardiography

Question 2

What is the primary pacemaker of the heart?

Answer 2

SA node

Question 3

The electrical impulses responsible for the cardiac cycle that appear on an electrocardiogram as peaks and valley are called?

Answer 3

deflections

Question 4

What is an erroneous mark or defect that may appear on an ECG strip?

Answer 4

artifact

Question 5

Which test is utilized to measure the heart’s conduction system during exercises, when the demand for oxygen is increased?

Answer 5

stress testing

Question 6

What is used to assess the electrical activity of a patient’s heart over a 24-hour period of normal activity?

Answer 6

ambulatory monitoring

Question 7

What would be included in the patient’s instructions regarding ambulatory monitoring?

Answer 7

instruct the patient to record all activities, emotions, symptoms, and medications taken

Question 8

Electrical impulse sensors used to obtain an electrocardiogram is called?

Answer 8

electrodes

Question 9

The deflections that occur on an ECG are labeled with what letters?

Answer 9

P, Q, R, S, T, and U

Question 10

What is the small upward curve that represents the sinoatrial node impulse, wave of depolarization through the atria and resultant contraction?

Answer 10

P wave

Question 11

What represents the time between contraction of the ventricles and recovery?

Answer 11

S-T segment