Deck 3: Lead Morphology and Placement

Question 1

The V1 electrode is located at the

A)First intercostal space,left sternal border.
B)Fifth intercostal space,left sternal border.
C)Fourth intercostal space,right sternal border.
D)Fourth intercostal space,left sternal border.

Answer 1

C

Question 2

Joining leads I,II,and III at their ends produce

A)The triaxial diagram.
B)The hexiaxial diagram.
C)Einthoven's triangle.
D)The precordial leads.

Answer 2

C

Question 3

Lead I connects which limbs?

A)Right arm and left leg
B)Right arm and right leg
C)Right arm and left arm
D)Left arm and right leg

Answer 3

C

Question 4

Lead II connects which limbs?

A)Right arm and left leg
B)Right arm and right leg
C)Right arm and left arm
D)Left arm and right leg

Question 5

Augmented leads are

A)The same as bipolar leads.
B)Leads in which the EKG machine must increase the voltage.
C)The same as precordial leads.
D)Leads I,II,and III.

Question 6

Which of the following is NOT a bipolar lead?

A)Lead II
B)AVF
C)Lead I
D)Lead III

Question 7

In the precordial leads,V1's QRS complex

A)Should be a primarily negative deflection.
B)Should be a primarily positive deflection.
C)Should be isoelectric.
D)Represents atrial depolarization.

Question 8

Lead III connects which limbs?

A)Right arm and left leg
B)Right arm and right leg
C)Right arm and left arm
D)Left arm and left leg

Question 9

AVL has its positive pole on the

A)Left arm.
B)Right leg.
C)Right arm.
D)Left leg.

Question 10

AVR has its positive pole on the

A)Left arm.
B)Right leg.
C)Right arm.
D)Left leg.

Question 11

Einthoven's triangle is formed by joining which leads at their ends?

A)I,II,III
B)AVR,AVL,AVF
C)V1,V2,V3
D)V4,V5,V6

Question 12

AVF

A)Is a bipolar lead.
B)Is a precordial lead.
C)Is an augmented lead.
D)Has its positive pole on the left arm.

Question 13

An impulse that travels away from a positive electrode will write a(n)_____ on the EKG.

A)Positive QRS complex
B)Negative QRS complex
C)Isoelectric QRS
D)Flat line

Question 14

Bipolar leads

A)Have a positive pole and a negative pole.
B)Have a positive pole and a central terminal acting as negative pole.
C)Join leads on the back of the body with leads on the front.
D)Are leads V1 through V6.

Question 15

Which of the following is NOT a precordial lead?

A)V6
B)AVR
C)V5
D)V1

Question 16

V1 through V6 are the

A)Bipolar leads.
B)Frontal leads.
C)Augmented leads.
D)Precordial leads.

Question 17

Einthoven's law states that

A)Lead I + lead III = lead II.
B)Lead II + lead III = lead I.
C)V1 + V5 = V4.
D)Lead I + lead II = lead III.

Question 18

The precordial leads are located on the

A)Arms.
B)Legs.
C)Back.
D)Chest.

Question 19

In which lead should the tallest QRS complex be seen?

A)Lead I
B)Lead II
C)Lead III
D)AVF

Question 20

AVF's negative reference point is formed by finding the midway point between which limbs?

A)Right arm and right leg
B)Left arm and left leg
C)Right arm and left arm
D)Left arm and right leg

Question 21

In which of the following leads should the QRS complex be negative?

A)Lead I
B)Lead II
C)AVR
D)AVL

Question 22

The precordial leads are placed on the arms and legs.

Question 23

The QRS complex should be positive in which of the following leads?

A)AVR
B)V1
C)V6
D)V2

Question 24

The normal QRS complex deflection is positive in leads I and AVF.

Question 25

In the precordial leads,we look at current flow in the _____ plane.

Question 26

If lead AVR's QRS is positive,the heart's current would be traveling toward the

A)Right arm.
B)Left arm.
C)Right leg.
D)Left leg.

Question 27

The structure formed by joining all the frontal leads at the center is the hexiaxial diagram.

Question 28

The "father of electrocardiography" is _____.

Question 29

The bipolar lead formed by joining the right arm and left leg is

A)Lead I.
B)Lead II.
C)Lead III.
D)AVR.

Question 30

Lead II measures the current traveling between the _____.

Question 31

Einthoven's law states that _____.

Question 32

It is normal for the QRS complex to be primarily positive in V1.

Question 33

If lead I's QRS is positive,the heart's current is traveling toward the right arm.

Question 34

The normal QRS deflection in lead III should be negative.

Question 35

It is abnormal for the QRS to be negative in AVR.

Question 36

Einthoven's triangle is formed by joining leads I,II,and III at their ends.

Question 37

A positive QRS complex is written by an impulse that travels toward the positive electrode.

Question 38

The electrode on the right leg is the ground electrode and plays no part in any lead.

Question 39

A lead is an electrocardiographic _____.

Question 40

If lead II's QRS complex is positive,the heart's current is traveling toward the

A)Right arm.
B)Left arm.
C)Right leg.
D)Left leg.

Question 41

Lead AVF's positive electrode is located on the _____.

Question 42

The difference between unipolar and bipolar leads is that _____ involves two limbs.

Question 43

An impulse traveling perpendicularly to the positive electrode writes _____ on the EKG paper.

Question 44

The tallest QRS complex should be in lead _____.

Question 45

The _____ is the structure obtained from joining leads I,II,and III at the middle.

Question 46

Normal current of the heart travels top to bottom and _____.

Question 47

A _____ is an arrow that depicts the general direction of current flow.

Question 48

V6's QRS complex should be primarily _____.

Question 49

Lead AVR's positive electrode is located on the _____.

Question 50

The lead whose positive pole is on the right arm and negative pole is on the left leg is _____.