Interpretation of an EKG strip

Question 1

Step one of the 5-step approach for EKG interpretation is the:

Select one:

a. QRS complex.
b. PRI.
c. heart rhythm.
d. heart rate.

Answer 1

d. heart rate

Question 2

The point where the QRS complex meets the ST segment is commonly referred to as the:

Select one:

a. P point.
b. Q point.
c. S point
d. J point.

Answer 2

d. J point

Question 3

When utilizing the R-R interval method to calculate the heart rate, you count the number of ________ between two R waves.

Select one:

a. large boxes
b. small boxes

Answer 3

a. large boxes

Question 4

The sequential beating of the heart as a result of the generation of electrical impulses is called:

Select one:

a. heart rhythm
b. heart rate.
c. heart system.
d. heart regularity.

Answer 4

a. heart rhythm

Question 5

Heart rate below 60 beats per minute is termed:

Select one:

a. bradycardia.
b. tachycardia
c. supraventricular.
d. idioventricular.

Answer 5

a. bradycardia.

Question 6

The normal heart rate is ________ beats per minute.

Select one:

a. 20–40
b. 60–100
c. 40–60
d. 40–120

Answer 6

b. 60-100

Question 7

When utilizing the 6-second method, you count the number of R waves in a six-second strip and multiply by:

Select one:

a. 5
b. 10
c. 15
d. 20

Answer 7

b. 10

Question 8

A wide QRS complex is determined by a measurement of:

Select one:

a. 0.04 seconds or greater.
b. 0.08 seconds or less
c. 0.12 seconds or greater.
d. 0.11 seconds or less.

Answer 8

c. 0.12 seconds or greater

Question 9

The PR interval is considered normal if it is between:

Select one:

a. 0.04 and 0.08 seconds.
b. 0.12 and 0.20 seconds.
c. 0.20 and 0.24 seconds.
d. 0.02 and 0.12 seconds.

Answer 9

b. 0.12 and 0.20 seconds.

Question 10

Artifact is defined as EKG waveforms from sources outside the heart and is most often caused by all the following EXCEPT:

Select one:

a. electrical impulses.
b. patient movement
c. defective electrodes.
d. defective cables

Answer 10

a. electrical impulses.

Question 11

A rhythm that originated in the SA node is determined by a:

Select one:

a. P wave with a negative deflection.
b. P wave with a positive deflection.
c. P wave that is not upright.
d. P wave that is inverted.

Answer 11

b. P wave with a positive deflection.

Question 12

A normal or narrow QRS complex indicates that the impulse was not formed in the ventricles and is termed:

Select one:

a. supraventricular.
b. midventricular.
c. idioventricular.
d. aberrant conduction.

Answer 12

a. supraventricular.

Question 13

After making the determination utilizing the R-R interval, you then divide that into ________ to get your rate.

Select one:

a. 100
b. 200
c. 300
d. 400

Answer 13

c. 300

Question 14

R to R intervals that exhibit no similarity are termed:

Select one:

a. irregularly irregular.
b. occasionally irregular.
c. regularly irregular.
d. regular.

Answer 14

a. irregularly irregular.

Question 15

The term ________ is utilized when an impulse may be “above the ventricles.”

Select one:

a. idioventricular
b. enterventricular
c. supraventricular
d. medventricular

Answer 15

c. supraventricular