NHA NOW EKG Technician Practice
Test Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
Why is it important to remove excessive hair before electrode placement?
A. To reduce pain
B. To improve patient comfort
✔✔C. To ensure proper electrode adhesion and signal quality
D. To prevent infection
Which rhythm is considered normal for adults at rest?
A. Atrial fibrillation
✔✔B. Normal sinus rhythm
C. Ventricular tachycardia
D. Asystole
Which artifact appears as a wandering baseline on an EKG strip?
A. 60-cycle interference
✔✔B. Poor electrode contact or loose wires
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,C. Tremor or shivering
D. Muscle tension
Which lead placement provides a view of the septum?
A. V4 and V5
✔✔B. V1 and V2
C. Lead II and III
D. aVL and aVR
Which action helps prevent muscle tremor artifacts?
A. Ask the patient to cough
✔✔B. Ask the patient to relax and remain still
C. Apply more gel
D. Reposition leads frequently
What is considered a normal duration for the QRS complex?
A. 0.06–0.10 seconds
B. 0.12–0.16 seconds
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,✔✔C. 0.08–0.12 seconds
D. 0.14–0.20 seconds
Which lead provides a view of the heart’s lateral wall?
A. Lead II
B. Lead III
✔✔C. Lead I
D. Lead aVR
What is the first step before placing EKG electrodes on a patient?
A. Plug in the machine
✔✔B. Clean and prep the skin
C. Start the machine
D. Measure blood pressure
Which lead is considered the ground electrode in a standard 12-lead EKG?
A. RA
B. LA
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, C. LL
✔✔D. RL
What is the normal heart rate range for an adult at rest?
A. 40–60 bpm
✔✔B. 60–100 bpm
C. 100–120 bpm
D. 120–140 bpm
Which wave represents atrial depolarization?
A. QRS complex
✔✔B. P wave
C. T wave
D. U wave
What does the QRS complex represent on an EKG?
A. Atrial depolarization
✔✔B. Ventricular depolarization
4
Test Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
Why is it important to remove excessive hair before electrode placement?
A. To reduce pain
B. To improve patient comfort
✔✔C. To ensure proper electrode adhesion and signal quality
D. To prevent infection
Which rhythm is considered normal for adults at rest?
A. Atrial fibrillation
✔✔B. Normal sinus rhythm
C. Ventricular tachycardia
D. Asystole
Which artifact appears as a wandering baseline on an EKG strip?
A. 60-cycle interference
✔✔B. Poor electrode contact or loose wires
1
,C. Tremor or shivering
D. Muscle tension
Which lead placement provides a view of the septum?
A. V4 and V5
✔✔B. V1 and V2
C. Lead II and III
D. aVL and aVR
Which action helps prevent muscle tremor artifacts?
A. Ask the patient to cough
✔✔B. Ask the patient to relax and remain still
C. Apply more gel
D. Reposition leads frequently
What is considered a normal duration for the QRS complex?
A. 0.06–0.10 seconds
B. 0.12–0.16 seconds
2
,✔✔C. 0.08–0.12 seconds
D. 0.14–0.20 seconds
Which lead provides a view of the heart’s lateral wall?
A. Lead II
B. Lead III
✔✔C. Lead I
D. Lead aVR
What is the first step before placing EKG electrodes on a patient?
A. Plug in the machine
✔✔B. Clean and prep the skin
C. Start the machine
D. Measure blood pressure
Which lead is considered the ground electrode in a standard 12-lead EKG?
A. RA
B. LA
3
, C. LL
✔✔D. RL
What is the normal heart rate range for an adult at rest?
A. 40–60 bpm
✔✔B. 60–100 bpm
C. 100–120 bpm
D. 120–140 bpm
Which wave represents atrial depolarization?
A. QRS complex
✔✔B. P wave
C. T wave
D. U wave
What does the QRS complex represent on an EKG?
A. Atrial depolarization
✔✔B. Ventricular depolarization
4
