Electrocardiogram (ECG or EKG)

Question 0

In an ECG reading, which wave represents depolarization of the atrium?

Answer 0

Represented by the P wave.

Question 1

Identify the waveforms found in a normal ECG.

Answer 1

• P wave
• QRS complex
• T wave
• ST segment
• PR interval

Question 2

In an ECG reading, what complex represents depolarization of the ventricle?

Answer 2

QRS complex

Question 3

What does the PR interval represent?

Answer 3

The time required for the impulse to travel from the atria through the AV node.

Question 4

If the U wave is most prominent, what condition might the nurse suspect?

Answer 4

Hypokalemia

Question 5

Describe the calculation of the heart rate using an ECG rhythm strip.

Answer 5

Count the number of RR intervals in the 30 large squares and multiply by 10 to determine the heart rate for 1 minute.

Question 6

What is the most important assessment data for the nurse to obtain in a client with an arrhythmia?

Answer 6

Ability of the client to tolerate the arrhythmia.