Deck 5: Calculating Heart Rate

Question 1

Regularity is concerned with the constancy of QRS complexes.

Answer 1

True

Question 2

Atrial rate can be calculated by counting

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

Answer 2

B

Question 3

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

Answer 3

False

Question 4

The heart rate in Figure 1 is closest to

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

Question 5

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

Question 6

The mean rate in Figure 1 is

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

Question 7

The type of regularity in which the QRS complexes vary wildly throughout the rhythm strip is

A)Regular.
B)Regular but interrupted by premature beats.
C)Regular but interrupted by pauses.
D)Irregular.

Question 8

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

Question 9

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 10

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.

Question 11

The mean rate in Figure 2 is

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

Question 12

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 13

A regular rhythm has R-R intervals that vary by only one or two little blocks.

Question 14

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 15

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 16

The heart rate in Figure 2 is closest to

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

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

The rhythm in Figure 2 is

A)Regular.
B)Irregular.
C)Regular but interrupted by premature beats.
D)Regular but interrupted by pauses.

Question 19

The rhythm in Figure 1 is

A)Regular.
B)Irregular.
C)Regular but interrupted by premature beats.
D)Regular but interrupted by pauses.

Question 20

The most accurate way to determine heart rate would be to

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

Question 21

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

Question 22

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

Question 23

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

Question 24

A regular rhythm is one in which _____.

Question 25

Heart rate is the same as _____ rate.