Deck 2: Waves and Measurements

Question 1

A strong impulse can cause a premature abnormal discharge during the ________ refractory period.

A)original
B)absolute
C)relative
D)impulse

Answer 1

C

Question 2

The PR interval begins at the first sign of the P wave and ends at the first sign of the next deflection,which is called the:

A)T wave.
B)S wave.
C)PR segment.
D)QRS complex.

Answer 2

D

Question 3

Which of the following best describes the elements of a single cardiac cycle?

A)P wave,PR segment,and PR interval
B)P wave and QRS complex
C)QRS complex,ST segment,and T wave
D)P wave,PR segment,PR interval,QRS complex,and T wave

Answer 3

D

Question 4

A series of cardiac cycles makes up a(n):

A)EKG rhythm strip.
B)QRS complex.
C)P-P interval.
D)wave segment.

Question 5

The horizontal lines on the EKG graph paper measure:

A)time.
B)speed.
C)pattern.
D)voltage.

Question 6

The deflections above and below the isoelectric line are referred to as:

A)intervals.
B)segments.
C)pauses.
D)waves.

Question 7

The distance between two "tic" marks is ________ sec.

A)3
B)4
C)5
D)6

Question 8

The PR interval reflects all ________ activity.

A)mechanical
B)atrial
C)cardiac
D)ventricular

Question 9

The vertical lines on the EKG graph paper measure:

A)time.
B)speed.
C)pattern.
D)voltage.

Question 10

No impulse can cause depolarization during the ________ refractory period.

A)original
B)absolute
C)relative
D)impulse

Question 11

The short period of electrical inactivity between the end of the P wave and the start of the QRS complex is called the:

A)P pause.
B)PR segment.
C)PR interval.
D)PR pause.

Question 12

On EKG graph paper,the distance in time between two light vertical lines,or across one small square,is ________ sec.

A)0.04
B)0.08
C)0.12
D)0.20

Question 13

On EKG graph paper,the time between two heavy vertical lines is five small boxes,or ________ sec.

A)0.04
B)0.08
C)0.12
D)0.20

Question 14

The EKG machine produces an upright deflection on the graph paper if the flow of electricity is toward the ________ electrode.

A)positive
B)negative
C)straight
D)inverted

Question 15

When an EKG machine is turned on but not yet connected to the patient,the stylus produces a straight line called the ________ line.

A)equal force
B)isoelectric
C)standard
D)straight

Question 16

Which of the following is NOT a normal QRS measurement?

A)0.08
B)0.20
C)0.11
D)0.06