Deck 5: Calculating Heart Rate

Question 1

Calculating heart rate involves counting the number of P waves on the strip.

Answer 1

False

Question 2

Which of the following is NOT a method of calculating heart rate?

A)The six-second strip method
B)The little block method
C)The memory method
D)The P-P interval method

Answer 2

D

Question 3

Atrial rate can be calculated by counting

A)QRS complexes.
B)P waves.
C)PR intervals.
D)R-R intervals.

Answer 3

B

Question 4

The heart rate in Figure 1 is closest to

A)100.
B)70.
C)150.
D)50.

Question 5

R-R intervals are measurements of the distance between consecutive QRS complexes.

Question 6

Regardless of the method used,what are you doing when you calculate heart rate?

A)Counting the number of P waves in a minute-long rhythm strip
B)Counting the number of QRS complexes in a minute-long rhythm strip
C)Counting the number of premature beats or pauses in a minute-long rhythm strip
D)Counting the number of irregular blocks in a minute-long rhythm strip

Question 7

The mean rate is calculated by

A)counting the number of P waves in a minute-long rhythm strip.
B)counting the number of QRS complexes in a minute-long rhythm strip.
C)counting the number of QRS complexes on a six-second strip and multiplying by 10.
D)counting the number of P waves on a six-second strip and multiplying by 10.

Question 8

An irregular rhythm is one in which

A)the R-R intervals vary "all over the place."
B)the R-R intervals vary by only one or two little blocks.
C)there are premature beats or pauses that interrupt the otherwise regular rhythm.
D)the QRS complexes do not look alike.

Question 9

The mean rate in Figure 1 is

A)50.
B)60.
C)70.
D)100.

Question 10

The heart rate in Figure 2 is closest to

A)180.
B)250.
C)75.
D)50.

Question 11

Regularity is concerned with the constancy of QRS complexes.

Question 12

The rhythm in Figure 2 is

A)regular.
B)irregular.
C)regular but interrupted by premature beats.
D)regular but interrupted by pauses.

Question 13

Which of the following is a method of calculating heart rate?

A)Six-second strip method
B)The QT interval method
C)The P-P interval method
D)All of the above

Question 14

The rhythm in Figure 1 is

A)regular.
B)irregular.
C)regular but interrupted by premature beats.
D)regular but interrupted by pauses.

Question 15

The type of regularity in which the R-R intervals are 22-24-23-29-33-47-27 is

A)regular.
B)regular but interrupted by premature beats.
C)regular but interrupted by pauses.
D)irregular.

Question 16

Regularity of a rhythm is determined by measuring the

A)P-P intervals.
B)QRS intervals.
C)R-R intervals.
D)distance between consecutive U waves.

Question 17

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

A)vary by only one or two little blocks.
B)do not vary at all.
C)are the same as the P-P intervals.
D)are interrupted by premature beats.

Question 18

Which of the following should you do when calculating a regular heart rate interrupted by pauses?

A)Calculate the range fastest to slowest and calculate the mean rate.
B)Calculate the range slowest to fastest and calculate the mean rate.
C)Calculate only the mean rate and disregard the range.
D)Calculate only the range and disregard the mean rate.

Question 19

What is the correct procedure for calculating a regular heart rate interrupted by premature beats?

A)Ignore the premature beats and calculate the heart rate using the six-second strip or memory methods.
B)Calculate the range slowest to fastest using the memory method and the mean rate using the six-second strip method.
C)Ignore the premature beats and calculate the heart rate using the little block or memory method.
D)Calculate the range fastest to slowest using the little block method and the mean rate using the six-second strip method.

Question 20

The mean rate in Figure 2 is

A)60.
B)70.
C)80.
D)100.

Question 21

The three methods of calculating heart rate are six-second strip,memory method,and ________.

Question 22

Heart rate is the same as ________ rate.

Question 23

If the QRS complexes are all 15 little blocks apart,the heart rate is ________.

Question 24

If the QRS complexes are all 50 little blocks apart,the heart rate is ________.

Question 25

An irregular rhythm has R-R intervals that vary by only one or two little blocks.

Question 26

A regular rhythm is one in which ________.

Question 27

The most accurate way to calculate heart rate on an irregular rhythm is the six-second strip method.