NHA Certified EKG Technician Certification Examination Practice Test
EKG technician work centers on obtaining interpretable electrocardiograms and supporting patients safely during cardiac testing. Practice topics include preparing patients, placing limb and precordial electrodes, recording a resting 12-lead ECG, and recognizing factors that can affect the tracing, such as movement artifact or an apparent heart-rate mismatch.
Exam overview
About the NHA Certified EKG Technician Certification Examination Exam
Accurate ECG recording depends on matching electrode locations to the intended leads, preparing the skin and equipment, and following the facility’s process for an authorized test order. Technicians also need to explain the procedure clearly, account for concerns such as latex allergy or a history of fainting, and respond promptly if a patient becomes unresponsive. Tracing interpretation at a technician level includes understanding paper speed and the time represented by horizontal grid boxes, distinguishing likely artifact from cardiac activity, and checking a surprising displayed rate against the patient’s condition before treating it as reliable. These tasks combine basic ECG concepts with patient observation, communication, safety, and appropriate escalation rather than independent diagnosis.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
A patient says they do not understand why the ECG requires removal of some clothing. Which explanation is most appropriate?
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Correct answer: BElectrodes must contact the appropriate skin sites. The technician should explain the reason, protect the patient’s privacy, and use appropriate draping while exposing only what is needed.
Which electrode positions correspond to the V1 and V2 precordial leads?
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Correct answer: AFor a standard 12-lead ECG, V1 is placed at the fourth intercostal space at the right sternal border, and V2 at the fourth intercostal space at the left sternal border.
A patient becomes pale and unresponsive while an ECG is being recorded. What should the technician do immediately?
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Correct answer: BUnresponsiveness with pallor may indicate an urgent medical problem. The technician should promptly summon help according to facility emergency procedures rather than delay care to finish the recording.
Which ECG change is most directly associated with skeletal muscle movement during a recording?
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Correct answer: AMovement and muscle activity can introduce artifact that distorts the baseline or waveform appearance. Such interference is technical noise, not necessarily a change in the heart’s electrical activity.
A patient has a strong, regular pulse and is comfortable, but the ECG monitor displays a heart rate much faster than expected. What should the technician do before concluding the rate is accurate?
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Correct answer: AAutomated rate calculations can be affected by artifact or signal-detection errors. Verify the tracing quality and assess the QRS rate using the time scale before accepting the displayed value.
A resting 12-lead ECG is recorded at a paper speed of 25 mm/s. How much time does one large horizontal box represent?
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Correct answer: BAt 25 mm/s, a large box is 5 mm wide, so it represents 5 ÷ 25 = 0.20 seconds. A small 1 mm box represents 0.04 seconds.
While preparing a patient for an ECG, a technician finds an order that appears to be missing a required authorization under the facility’s policy. What should the technician do?
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Correct answer: BTechnicians should follow applicable facility procedures for authorization and clarify incomplete or uncertain orders with the appropriate staff before performing the test.
How to use this practice test
The free practice session presents up to 20 random questions from the available 50-question CET bank. Answer the scenarios as you would during ECG setup and recording, then review the results after the session to identify topics that need more attention, such as lead placement, ECG timing, artifact, or patient safety.
Preparation tips
- Practice locating V1 and V2 using the appropriate intercostal spaces and sternal landmarks; distinguish these positions from the other precordial lead sites.
- At 25 mm/s, connect paper speed to grid timing: a small horizontal box represents 0.04 seconds and a large box represents 0.20 seconds.
- Compare a monitor’s displayed rate with the patient’s pulse and clinical appearance when the reading seems implausible; do not rely on the number alone.
- Rehearse immediate patient-safety responses to pallor, fainting, or unresponsiveness, including stopping the recording and alerting the appropriate clinical staff.
- Before setup, confirm the order follows facility authorization policy, ask about relevant allergies, and explain clothing adjustments needed for electrode placement.