EKG certification Certification FREE ECG Technician Certification Exam Question and Answers 3

Question 1

A rhythm strip shows irregularly irregular R-R intervals with no discernible P waves. What is the most likely rhythm?

Accepted Answer

Atrial fibrillation

Answer

Atrial flutter

Answer

Sinus arrhythmia

Answer

Multifocal atrial tachycardia

Question 2

What is the standard paper speed used for ECG recording in the United States?

Accepted Answer

25 mm/sec

Answer

50 mm/sec

Answer

10 mm/sec

Answer

100 mm/sec

Question 3

Which electrolyte imbalance is most commonly associated with tall, peaked T waves on an ECG?

Accepted Answer

Hyperkalemia

Answer

Hypokalemia

Answer

Hypercalcemia

Answer

Hyponatremia

Question 4

An ECG technician accidentally reverses the right arm and left arm electrodes. Which leads will display inverted waveforms?

Accepted Answer

Lead I will be inverted

Answer

Lead II will be inverted

Answer

Lead V1 will be inverted

Answer

All precordial leads will be inverted

Question 5

What is the normal QT interval range for a heart rate of 60-100 bpm?

Accepted Answer

0.36 to 0.44 seconds

Answer

0.12 to 0.20 seconds

Answer

0.06 to 0.10 seconds

Answer

0.44 to 0.56 seconds

Question 6

Which of the following is the proper action if an ECG baseline wander is observed during recording?

Accepted Answer

Check that electrodes have proper skin contact and gel

Answer

Increase the paper speed to 50 mm/sec

Answer

Ask the patient to hold their breath for the entire recording

Answer

Disconnect and reconnect the power supply