Summer 2023

Question 1

Arteries carry blood way from the heart except the arteries that provide blood to the heart.
T/F

Answer 1

T

Question 2

The heart is influenced by the sympathetic and parasympathetic nervous systems.
T/F

Answer 2

True

Question 3

One small box is how many seconds?

Answer 3

0.04

Question 4

Refractory means ____ to

Answer 4

resistant

Question 5

Normal QRS interval is ______ seconds or less than three small blocks

Answer 5

.12

Question 6

The pacemaker with the slowest inherent rate is the _______

Answer 6

ventricles

Question 7

The cardiac cell at rest has what kind of electrical charge?

Answer 7

negative

Question 8

Depolarization

Answer 8

electrical event that should result in muscle contraction.

Question 9

The action potential, phase O is

Answer 9

depolarization

Question 10

In the action potential, phase 3 is

Answer 10

rapid repolarization

Question 11

Phase 0 of the action potential corresponds with what wave or complex on the EKG?

Answer 11

QRS complex

Question 12

+20 mV is the

Answer 12

transmembrane potential at the conclusion of phase 0 of the action potential

Question 13

The relative refractory period extends from the

Answer 13

upstroke of the T wave to the end of the T wave.

Question 14

The P wave represents

Answer 14

atrial deoplarization

Question 15

The QRS complex represents

Answer 15

ventricular repolarization

Question 16

The T wave represents

Answer 16

ventricular repolarization

Question 17

An upward deflection of the QRS complex is called a(n)

Answer 17

R wave

Question 18

The normal pacemaker of the heart is the

Answer 18

Sinus node

Question 19

Which of the following characteristics of heart cells is mechanical?

Answer 19

Contractility

Question 20

What is TRUE about the following intervals: PR 0.14, QRS 0.08?

Answer 20

intervals are normal

Question 21

On EKG paper, one big block represents

Answer 21

0.20 seconds

Question 22

The EKG is a recording of the

Answer 22

heart’s electrical activity

Question 23

What are the leads that apply to triaxial diagrams?

Answer 23

Includes 3 leads. leads I, II, and III

Question 24

V1

Answer 24

4th ICS, RSB

Question 25

V2

Answer 25

4th ICS, LSB

Question 26

V3

Answer 26

5th ICS between V2 and V4

Question 27

V4

Answer 27

5th ICS, MCL

Question 28

V5

Answer 28

5th ICS, AAl

Question 29

V6

Answer 29

5th ICS, MAL

Question 30

What are the augmented leads?

Answer 30

aVL, aVF, aVR

Question 31

aVL

Answer 31

left arm

Question 32

aVR

Answer 32

Right arm

Question 33

aVF

Answer 33

left leg

Question 34

Lead I

Answer 34

left arm

Question 35

Lead 2

Answer 35

Left Leg

Question 36

Lead II

Answer 36

Left leg

Question 37

The aVR should have a negative deflection of the R wave portion of the QRS complex? TF

Answer 37

T

Question 38

Einthoven's law is:

Answer 38

lead I + lead III = lead II

Question 39

Monitoring that is over a long period of time, sometimes days or weeks, is continuous monitoring. What are the two leads that are most commonly used?

Answer 39

lead II, MCL1

Question 40

negative QRS complex

Answer 40

an impulse traveling away from a positive electrod

Question 41

flat line

Answer 41

no electrical activity

Question 42

positive QRS complex

Answer 42

impulse travelling toward the positive electrode

Question 43

isoelectric

Answer 43

impulse traveling at a right angle to the positive electrode

Question 44

Normal chart speed for running a 12-lead EKG is ____ millimeters per second.

Answer 44

25

Question 45

A microshock is a

Answer 45

shock directly into the heart, is still dangerous, smaller shock

Question 46

There are how many types of artifact are there.

Answer 46

4

Question 47

To minimize artifact you should consider the following choices (choose all that apply)

Answer 47

Ask the patient to breath normally Ask the patient to stop brushing their teeth Change to a different lead Change the electrode

Question 48

One of the most important things to do when you are not sure if the rhythm has artifact or if it is a dangerous rhythm would be to

Answer 48

evaluate the patient

Question 49

interference on the EKG tracing

Answer 49

artifact

Question 50

frequency response

Answer 50

filters out artifact

Question 51

controls height of EKG waves

Answer 51

gain

Question 52

There are just regular and irregular heart rhythms. TF

Answer 52

F

Question 53

The 6-second method used to calculate the one minute heart rate is the most accurate method because it has all the information you may need. TF

Answer 53

F

Question 54

The memory method works quickly to identify the heart rate on the rhythm strip. TF

Answer 54

True

Question 55

The little blocks method should not be used to calculate the heart rate in irregular rhythms. TF

Answer 55

F

Question 56

You are required to use a calculator to determine the heart rate on every rhythm strip. TF

Answer 56

F

Question 57

Regularity of a rhythm is determined by measuring the

Answer 57

R-R intervals

Question 58

A regular rhythm is one in which the R-R intervals

Answer 58

vary by only one or two little blocks.

Question 59

An irregular rhythm is one in which

Answer 59

the R-R intervals vary "all over the place."

Question 60

Atrial rate can be calculated by counting

Answer 60

P waves

Question 61

Chapter 6