NHA EKG (CET) EXAM – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE
*Core Domains*
*Medical Terminology*
*Anatomy and Physiology*
*EKG Instrumentation*
*Patient Care and Safety*
*Cardiac Rhythms and Lead Placement*
*Legal and Ethical Considerations*
*Standard and Modified Lead Sets*
*Quality Assurance and Troubleshooting*
*Introduction*
The NHA Certified EKG Technician (CET) assessment is a comprehensive
examination designed to evaluate the competency, proficiency, and readiness of
individuals entering the field of electrocardiography. This exam assesses essential
skills including electrode placement, rhythm interpretation, and patient preparation.
The structure incorporates both multiple-choice and complex scenario-based
,questions to mirror real-world clinical environments. Candidates are expected to
demonstrate critical decision-making abilities and clinical judgment regarding cardiac
abnormalities and patient safety. By focusing on practical application alongside
foundational theory, this exam ensures that practitioners meet the high standards of
care required in diverse healthcare settings while adhering to strict regulatory and
ethical guidelines.
1. Which of the following is the primary pacemaker of the heart, normally firing at a
rate of 60 to 100 beats per minute?
A. AV node
B. Purkinje fibers
C. Bundle of His
D. SA node
🟢 D. SA node
🔴 Explanation: The Sinoatrial (SA) node is the heart’s natural pacemaker, located in
the right atrium, and initiates the electrical impulse for the heartbeat.
2. A technician is performing an EKG on a patient with a very large or pendulous
breast. Which action should the technician take to ensure proper lead
, placement for V4?
A. Place the electrode on top of the breast tissue.
B. Ask the patient to lift the breast and place the electrode in the inframammary fold.
C. Place the electrode higher on the chest wall at the 2nd intercostal space.
D. Move the electrode to the right side of the chest in the same position.
🟢 B. Ask the patient to lift the breast and place the electrode in the inframammary
fold.
🔴 Explanation: To ensure accurate recording of the heart's electrical activity, V4
must be placed at the 5th intercostal space at the midclavicular line, which may
require lifting breast tissue.
3. Which of the following intervals represents the time it takes for an impulse to
travel from the atria to the ventricles?
A. QT interval
B. PR interval
C. ST segment
D. QRS complex
🟢 B. PR interval
, 🔴 Explanation: The PR interval measures the time from the onset of atrial
depolarization to the beginning of ventricular depolarization.
4. While performing a stress test, the patient complains of dizziness and the
technician observes a significant drop in blood pressure. What is the most
appropriate next step?
A. Increase the treadmill speed to finish the test faster.
B. Stop the test immediately and notify the physician.
C. Encourage the patient to keep going for another two minutes.
D. Administer water to the patient while they continue walking.
🟢 B. Stop the test immediately and notify the physician.
🔴 Explanation: Patient safety is the priority; dizziness and hypotension are
indications to terminate a stress test immediately to prevent syncope or cardiac
arrest.
5. In which direction does the electrical impulse move during normal ventricular
depolarization?
A. From the epicardium to the endocardium.
B. From the base of the heart to the apex.
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE
*Core Domains*
*Medical Terminology*
*Anatomy and Physiology*
*EKG Instrumentation*
*Patient Care and Safety*
*Cardiac Rhythms and Lead Placement*
*Legal and Ethical Considerations*
*Standard and Modified Lead Sets*
*Quality Assurance and Troubleshooting*
*Introduction*
The NHA Certified EKG Technician (CET) assessment is a comprehensive
examination designed to evaluate the competency, proficiency, and readiness of
individuals entering the field of electrocardiography. This exam assesses essential
skills including electrode placement, rhythm interpretation, and patient preparation.
The structure incorporates both multiple-choice and complex scenario-based
,questions to mirror real-world clinical environments. Candidates are expected to
demonstrate critical decision-making abilities and clinical judgment regarding cardiac
abnormalities and patient safety. By focusing on practical application alongside
foundational theory, this exam ensures that practitioners meet the high standards of
care required in diverse healthcare settings while adhering to strict regulatory and
ethical guidelines.
1. Which of the following is the primary pacemaker of the heart, normally firing at a
rate of 60 to 100 beats per minute?
A. AV node
B. Purkinje fibers
C. Bundle of His
D. SA node
🟢 D. SA node
🔴 Explanation: The Sinoatrial (SA) node is the heart’s natural pacemaker, located in
the right atrium, and initiates the electrical impulse for the heartbeat.
2. A technician is performing an EKG on a patient with a very large or pendulous
breast. Which action should the technician take to ensure proper lead
, placement for V4?
A. Place the electrode on top of the breast tissue.
B. Ask the patient to lift the breast and place the electrode in the inframammary fold.
C. Place the electrode higher on the chest wall at the 2nd intercostal space.
D. Move the electrode to the right side of the chest in the same position.
🟢 B. Ask the patient to lift the breast and place the electrode in the inframammary
fold.
🔴 Explanation: To ensure accurate recording of the heart's electrical activity, V4
must be placed at the 5th intercostal space at the midclavicular line, which may
require lifting breast tissue.
3. Which of the following intervals represents the time it takes for an impulse to
travel from the atria to the ventricles?
A. QT interval
B. PR interval
C. ST segment
D. QRS complex
🟢 B. PR interval
, 🔴 Explanation: The PR interval measures the time from the onset of atrial
depolarization to the beginning of ventricular depolarization.
4. While performing a stress test, the patient complains of dizziness and the
technician observes a significant drop in blood pressure. What is the most
appropriate next step?
A. Increase the treadmill speed to finish the test faster.
B. Stop the test immediately and notify the physician.
C. Encourage the patient to keep going for another two minutes.
D. Administer water to the patient while they continue walking.
🟢 B. Stop the test immediately and notify the physician.
🔴 Explanation: Patient safety is the priority; dizziness and hypotension are
indications to terminate a stress test immediately to prevent syncope or cardiac
arrest.
5. In which direction does the electrical impulse move during normal ventricular
depolarization?
A. From the epicardium to the endocardium.
B. From the base of the heart to the apex.
