MARYLAND EKG TECHNICIAN CERTIFICATION
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026|INSTANT
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1. What is the primary function of the sinoatrial (SA) node?
A. Pump blood into ventricles
B. Initiate electrical impulses
C. Store oxygenated blood
D. Control blood pressure
Rationale: The SA node is the heart’s natural pacemaker.
Correct answer: B
2. Which wave represents atrial depolarization?
A. T wave
B. P wave
C. QRS complex
D. U wave
Rationale: P wave reflects atrial depolarization.
Correct answer: B
3. The QRS complex represents:
,A. Atrial contraction
B. Ventricular depolarization
C. Ventricular repolarization
D. SA node firing
Rationale: QRS reflects ventricular depolarization.
Correct answer: B
4. Normal adult heart rate range is:
A. 20–40 bpm
B. 40–60 bpm
C. 60–100 bpm
D. 100–140 bpm
Rationale: Normal resting heart rate is 60–100 bpm.
Correct answer: C
5. Which lead is a bipolar limb lead?
A. V1
B. aVR
C. Lead II
D. V4
Rationale: Lead II is a standard bipolar limb lead.
Correct answer: C
6. A flat line on ECG indicates:
,A. Tachycardia
B. Asystole
C. PVC
D. Atrial flutter
Rationale: Flat line indicates no electrical activity.
Correct answer: B
7. Which part of ECG reflects ventricular repolarization?
A. P wave
B. QRS complex
C. T wave
D. PR interval
Rationale: T wave represents ventricular repolarization.
Correct answer: C
8. Normal PR interval is:
A. 0.04–0.10 sec
B. 0.12–0.20 sec
C. 0.22–0.30 sec
D. 0.30–0.40 sec
Rationale: PR interval normal range is 0.12–0.20 sec.
Correct answer: B
9. Tachycardia is defined as heart rate above:
, A. 50 bpm
B. 60 bpm
C. 100 bpm
D. 120 bpm
Rationale: Tachycardia is >100 bpm.
Correct answer: C
10. Bradycardia is defined as heart rate below:
A. 60 bpm
B. 70 bpm
C. 80 bpm
D. 100 bpm
Rationale: Bradycardia is <60 bpm.
Correct answer: A
11. Which electrode is placed on the right arm?
A. RL
B. RA
C. LL
D. LA
Rationale: RA stands for right arm electrode.
Correct answer: B
12. V1 is placed at:
EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) Q&A 2026|INSTANT
DOWNLOAD PDF
1. What is the primary function of the sinoatrial (SA) node?
A. Pump blood into ventricles
B. Initiate electrical impulses
C. Store oxygenated blood
D. Control blood pressure
Rationale: The SA node is the heart’s natural pacemaker.
Correct answer: B
2. Which wave represents atrial depolarization?
A. T wave
B. P wave
C. QRS complex
D. U wave
Rationale: P wave reflects atrial depolarization.
Correct answer: B
3. The QRS complex represents:
,A. Atrial contraction
B. Ventricular depolarization
C. Ventricular repolarization
D. SA node firing
Rationale: QRS reflects ventricular depolarization.
Correct answer: B
4. Normal adult heart rate range is:
A. 20–40 bpm
B. 40–60 bpm
C. 60–100 bpm
D. 100–140 bpm
Rationale: Normal resting heart rate is 60–100 bpm.
Correct answer: C
5. Which lead is a bipolar limb lead?
A. V1
B. aVR
C. Lead II
D. V4
Rationale: Lead II is a standard bipolar limb lead.
Correct answer: C
6. A flat line on ECG indicates:
,A. Tachycardia
B. Asystole
C. PVC
D. Atrial flutter
Rationale: Flat line indicates no electrical activity.
Correct answer: B
7. Which part of ECG reflects ventricular repolarization?
A. P wave
B. QRS complex
C. T wave
D. PR interval
Rationale: T wave represents ventricular repolarization.
Correct answer: C
8. Normal PR interval is:
A. 0.04–0.10 sec
B. 0.12–0.20 sec
C. 0.22–0.30 sec
D. 0.30–0.40 sec
Rationale: PR interval normal range is 0.12–0.20 sec.
Correct answer: B
9. Tachycardia is defined as heart rate above:
, A. 50 bpm
B. 60 bpm
C. 100 bpm
D. 120 bpm
Rationale: Tachycardia is >100 bpm.
Correct answer: C
10. Bradycardia is defined as heart rate below:
A. 60 bpm
B. 70 bpm
C. 80 bpm
D. 100 bpm
Rationale: Bradycardia is <60 bpm.
Correct answer: A
11. Which electrode is placed on the right arm?
A. RL
B. RA
C. LL
D. LA
Rationale: RA stands for right arm electrode.
Correct answer: B
12. V1 is placed at:
