Deck 2: Waves and Measurements

Question 1

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

Answer 1

B

Question 2

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

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

Answer 2

A

Question 3

The PR interval reflects all activity.

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

Answer 3

D

Question 4

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

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

Question 5

The vertical lines on the EKG graph paper measure .

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

Question 6

The horizontal lines on the EKG graph paper measure .

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

Question 7

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

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

Question 8

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

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

Question 9

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

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

Question 10

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

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

Question 11

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

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

Question 12

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

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

Question 13

A series of cardiac cycles makes up an):

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

Question 14

Which of the following is NOT a normal QRS measurement?

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