FREE EKG Practice Test 2025 Official Study Guide PDF]

Last Updated on March 28, 2025

FREE EKG Practice Test 2025 Official Study Guide PDF] NHA: Try our free EKG 100 multiple-choice review questions and answers. All the EKG Practice Tests are designed based on the NHA EKG certification content. It will help you in nursing, EKG Technician, and ACLS course prep.

Table of Contents

FREE NHA EKG Practice Test 2025

If you’re preparing for the NHA (National Healthcareer Association) EKG certification exam, taking practice tests is essential to your study plan. A good EKG practice test will help you identify your strengths and weaknesses and give you an idea of what to expect on exam day.

One great way to access practice tests is by going online. Many nursing certification exam preparation websites offer EKG practice tests in a multiple-choice format that simulates the actual certification exam. These tests typically come in the form of downloadable PDFs that include a variety of questions and answers, as well as EKG strips for you to interpret.

EKG Practice Test Multiple Choice

246

EKG Practice Test

EKG Practice Test
Question Type: Multiple Choice and True/False
Test Type: Sample Test
Content": ECG Interpretation, Rate, ECG Tools, rhythm strip, Paper and Ink
Total: Items: 35 Questions Answers
Time Limit: N/A

1 / 35

The AV node is always supplied by:

The left anterior descending artery

The posterior descending artery

The right coronary artery

The left circumflex artery

2 / 35

Which of the statements below is incorrect:

The electrical conduction system of the heart is made up of specialized cells.

The conduction system is interwoven into the myocardial tissue.

The conduction system is visible under the microscope without special stains.

The internodal pathways transmit the impulse between the SA node and the AV node.

3 / 35

The right ventricle pumps the blood through the peripheral circulation

True

False

4 / 35

Visually, the right ventricle dominates the anterior view of the heart.

True

False

5 / 35

What is the rate if there are five beats in a 6-second strip?

5 BPM

15 BPM

50 BPM

150 BPM

6 / 35

What is the rate if there are 3.5 beats in a 12-second strip?

3.5 BPM

35 BPM

17.5 BPM

175 BPM

7 / 35

What is the rate if there are 3.5 beats in a 6-second strip?

3.5 BPM

35 BPM

350 BPM

3500 BPM

8 / 35

When calculating bradycardic rhythms, we take the number of complexes found during a 6-second interval on the ECG and multiply that number by 10. The product is the heart rate as beats per minute.

True

False

9 / 35

When calculating rates, the numbers to remember are:

300–160–90–75–60–50

300–150–100–75–60–50

300–150–80–70–60–50

400–160–100–75–60–50

10 / 35

The physiologic block is a normal slowing or delay of the impulse as it moves from the atria to the ventricles via the AV node. This slowing is critical to coordinate the mechanical contraction of the atria with the ventricles. Without the physiologic block, the atria and ventricles would contract simultaneously.

True

False

11 / 35

Q waves are significant if:

They are ≥ 0.03 seconds (one little block) wide

They are deeper than ⅓ the height of the R wave

Both A and B are correct

Both A and B are incorrect

12 / 35

The normal duration for the QRS interval is _____ seconds.

0.06–0.08

0.06–0.11

0.08–0.14

0.12–0.20

13 / 35

The normal duration for the PR interval is _____ seconds.

0.08–0.10

0.11–0.15

0.11–0.20

0.20–0.24

14 / 35

The P wave represents atrial repolarization and innervation of the atrial myocytes.

True

False

15 / 35

The baseline is a straight line drawn between the _____ of one complex to the _____ of the succeeding complex.

PR segment–PR segment

Beginning of one P–beginning of the next P

TP segment–TP segment

QT interval–QT interval

16 / 35

All ECGs are formatted the same way on the paper.

True

False

17 / 35

If an ECG were obtained at half standard, a wave that is 20 mm high would be described as being:

10 mm high

20 mm high

30 mm high

40 mm high

18 / 35

A distance of 2 big boxes and 2 little boxes wide is described as being:

22 mm wide

0.22 seconds wide

0.48 seconds wide

4.8 seconds wide

19 / 35

A wave that is 10 small boxes high and three small boxes wide is described as being:

1.0 mm by 0.3 seconds

10 mm by 0.12 seconds

12 mm by 0.3 seconds

12 mm by 0.10 seconds

20 / 35

The big boxes on the ECG paper measure:

5 mm by 0.20 seconds

1 mm by 0.20 seconds

5 mm by 0.04 seconds

1 mm by 0.04 seconds

21 / 35

The small boxes on ECG paper measure:

1 cm by 0.20 seconds

1 mm by 0.20 seconds

1 cm by 0.04 seconds

1 mm by 0.04 seconds

22 / 35

The entire ECG is:

3 seconds long

6 seconds long

9 seconds long

10 seconds long

23 / 35

What is the time frame occupied by one lead on a regular 12-lead ECG?

0.3 seconds

2.5 seconds

13 seconds

30 seconds

24 / 35

The width of each small box represents:

0.04 seconds

0.02 seconds

0.40 seconds

0.20 seconds

25 / 35

The paper on an ECG normally moves at:

50 mm/sec

15 cm/sec

75 mm/sec

25 mm/sec

26 / 35

An electrical lead is like a camera taking a picture of the electrical axis from its particular vantage point. A 12-lead ECG is like a picture album representing the “shots” taken by the 12 individual leads in a systematic format

True

False

27 / 35

Which of the following statements is incorrect:

Electrodes are sensing devices that pick up electrical activity taking place beneath them.

A positive electrical wave moving toward an electrode is represented on the ECG as a positive wave.

A positive electrical wave moving away from an electrode is represented on the ECG as a negative wave

A positive electrical wave moving toward an electrode is represented on the ECG as an isoelectric segment.

28 / 35

he electrical axis of the heart is a vector representing the summation of all of the individual vectors that make ventricular depolarization.

True

False

29 / 35

Which of the following is correct:

A vector is a diagrammatic way to show the strength of an electrical impulse.

A vector is a diagrammatic way to show the direction of an electrical impulse.

Both A and B are correct.

Both A and B are incorrect.

30 / 35

The electrochemical activity of polarization-depolarization is measurable by the ECG.

True

False

31 / 35

Which one of the following has the fastest pacemaking function:

SA node

Atrial myocytes

AV node

Bundle branches

32 / 35

Actin and myosin are the protein chains that shorten the myocytes. Which ion acts like a key that allows the troponin/tropomyosin complex to clamp these two together so they can interact?

Sodium

Potassium

Calcium

Magnesium

33 / 35

The electrical potential of the resting myocytes is:

+70 to +90 mV

+100 to +120 mV

Approximately zero

–70 to –90 mV

34 / 35

Lateral wall AMIs can be associated with infarcts in:

Anterior wall

Posterior wall

Inferior wall

Right ventricular wall

Anteroseptal areas

All of the above are correct.

None of the above are correct.

35 / 35

You should always look at all of the regions of the ECG whenever you find evidence of an infarct in any one region.

True

False

Your score is

When taking an EKG practice test, it’s essential to approach it as if you were taking the actual certification exam. This means setting aside a specific time to take the test, eliminating all distractions, and timing yourself to simulate exam conditions. Taking the practice test under test conditions will help you become more familiar with the format and pacing of the exam.

More Practice Test Online

EKG Certification

Learning the ECG is a valuable skill for both medical practitioners and non-practitioners. Interpreting ECG readings will help you understand how specific features of a person’s heart can affect him or her. This knowledge will guide appropriate care and prevent undesirable complications.

1. NHA Certified EKG Technician:

The NHA Certified EKG Technician (CET) official test has 100 scored items and 20 pretest items. You must finish the test in 2 hours. The Exam fee is usually around $115–$120.

2. NPS EKG Technician

National Performance Specialists Certified Electrocardiogram Technician (CET) Certification. Applicants need to have completed EKG technician training or have relevant experience. The training should encompass understanding cardiovascular anatomy and physiology, EKG electrode placement, and interpretation of EKG readings. A candidate must complete at least 10 live EKGs to qualify for the national CET certification exam.

The ongoing NPS certification exams consist of 100 four-option, scored multiple-choice items. Candidates have 2 hours to complete the exam, which is administered remotely through the NPS Remote Proctoring system.

Registration Fee: $200

3. CCI Cardiographic Technician

Cardiovascular Credentialing International (CCI) – Certified Cardiographic Technician (CCT) examination fee is USD 175. The Certified Cardiographic Technician (CCT) exam is a two-hour, computer-based exam that contains 130 questions.

Certified Cardiographic Technician (CCT) Exam Outline

EKG Test Study Guide PDF

The textbooks listed below are intended as recommended resources when preparing for examination. You may have previous or later editions of these or other references available that also present acceptable coverage of the subject matter. Any general text in cardiovascular techniques, evaluation, cardiac patient care, and management may be used. It is not necessary to use all of the texts identified. They are provided as suggestions only. CCI does not endorse or recommend any third-party review course or material.

1. Shier, David, Jackie Butler, and Ricki Lewis. Hole’s essentials of human anatomy and physiology. Boston: McGraw-Hill.
2. Booth, Kathryn A., and Thomas E. O’Brien. Electrocardiography for healthcare professionals. New York: McGraw-Hill.
3. Dubin, Dale. Rapid interpretation of EKG’s: an interactive course. 6th ed. Tampa, Fla.: Cover Pub. Co., 2000.
4. Wagner, Galen S., and Strauss, David G. Marriott’s Practical Electrocardiography. Philadelphia: Wolters Kluwer Health/ Lippincott Williams & Wilkins.

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