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Model Questions and Answers on ECG Technician
1. What leads are considered inferior leads?
A. II, III, aVF
B. II, III, aVR
C. l, II, III
D. VI, II
2. What leads are considered (left) lateral leads?
A. I, aVR
B. l, aVL
C. V5, V6
D. II, III
3. Choose the correct placement of V1:
A. 5th right intercostal space
C. 4th right intercostal space
D. Where the sun doesn’t shine
4. Name the correct placement of V2:
A. 4th left intercostal space
B. 4th right intercostal space
C. 5th left intercostal space
D. 5th right intercostal space
5. Name the placement for V4
A. Who cares?
B. 5th intercostal space, anterior axillary line
C. 5th intercostal space, midclavicular line
D. 5th intercostal space, midaxillary line
6. Normal duration and Normal amplitude of P wave is?
A. The duration of P wave is no greater than 0.18sec; the maximal normal amplitude is 2.8mm
B. The duration of P wave is no greater than 0.22sec; the maximal normal amplitude is 3.5mm
C. The duration of P wave is no greater than 0.11sec; the maximal normal amplitude is 2.5mm
D. The duration of P wave is no greater than 0.30sec; the maximal normal amplitude is 4.5mm
7. What is the normal length in PR interval in both seconds and mm?
A. 0.12 to 0.18 seconds (3-5mm)
B. 0.12 to 0.20 seconds (3-5 mm)
C. 0.20 to 0.30 seconds(3-5mm)
D. 0.18 to 1.06 seconds(3-5mm)
8. Normal duration of QRS complex?
A. 0.06 to 0.10 seconds
B. 0.04 to 0.90 seconds
C. 0.08 to 1.35 seconds
D. 1.00 to 2.00 seconds
9. Regarding the QRS complex: In which leads would you see a Deep S wave?
B. V1, V2
C. V3, V4
D. V5, V6
10. Regarding the QRS complex: In which lead(s) would you see a TALL R wave?
C. V1, V2
D. V5, V6
11. Regarding the QRS complex: In which lead(s) would you see a biphasic complex, reflection a “transition zone”?
C. V3, V4
D. V4, V5
12. In what leads do you see an “R wave progression”?
A. V1 to v6
B. V2 to v4
C. V5 to v6
D. V1 to v4
13. What part of the EKG is known as the “plateau phase”, and represents the initial part of ventricular repolarization?
A. S Wave
B. ST Segment
C. PR interval
D. QRS complex
14. What segment, if elevated or depressed, reveals a sign of serious pathology?
15. What wave represents ventricular repolarization?
A. U wave
B. P Wave
C. Q wave
D. T wave
16. Which of the following best represents the normal height of the T WAVE?
A. 1/2-2/3 height of corresponding R wave
B. 1/3-2/3 height of corresponding R wave
C. 1/3-2/3 height of corresponding T wave
D. 1/2-2/3 height of corresponding T wave
17. What portion of the EKG represents the duration of ventricular systole?
A. QT interval
B. PR segment
C. QRS complex
D. ST segment
18. The QT interval varies with heart rate, and thus must be corrected. This corrected QT interval is also abbreviated as (QTc). This value is considered normal when it s less than half of the interval at normal rates.
19. If a rhythm is described as sinus, what does this indicate?
A. P-waves are present
B. A P-wave precedes each QRS-complex
C. A QRS-complex precedes each T-wave
D. QRS-complexes are present
20. What is the normal duration of a QRS complex?
A. 0.16 seconds (4 small squares)
B. 0.08 seconds (2 small squares)
C. 0.04 seconds (1 small square)
D. 0.12 seconds (3 small squares)
21. What does ST-elevation suggest?
A. Bundle Branch Block
B. Heart murmur
C. Heart block – Mobitz type II
D. Myocardial infarction
22. What is the most common cause of left axis deviation?
A. Defects of the conduction system
B. Atrial septa] defects
C. Left ventricular hypertrophy
D. Right ventricular hypertrophy
23. The duration of the PR interval is noted to be increasingly prolonged. In addition, QRS complexes appear to be dropped at regular intervals. What diagnosis would this suggest.
A. Second degree – Mobitz Type 2 – Heart Block
B. First degree Heart Block
D. Second degree – Mobitz Type l – Heart Block
24. What is the duration of a normal PR-interval?
A. 0.12 – 0.2 seconds (3-5 small squares)
B. 0.04 – 0.08 seconds (1-2 small squares)
C. 0.04 – 0.12 seconds (1-3 small squares)
D. 0.08 -0.12 seconds (2-3 small squares)
25. If ST-elevation was noted in leads II, III and aVF what would it suggest?
A. An anterior myocardial infarction
B. An inferior myocardial infarction
C. A septal myocardial infarction
D. A posterior myocardial infarction
26. Which artery is most likely to be affected if ST elevation in present in leads V3 and V4?
A. Left circumflex coronary artery
B. Right coronary artery
C. Left anterior descending coronary artery
D. All of the above
27. The absence of P-waves and an irregular rhythm would suggest a diagnosis of…
A. Atrial ﬁbrillation
B. 1st degree heart block
C. 2nd degree heart block
D. Ventricular tachycardia
28. What view of the heart do leads I, aVL, V5 and V6 represent?
29. What is a common cause of right axis deviation?
A. Right ventricular hypertrophy
B. Atrial septal defect
C. Left ventricular hypertrophy
D. Ventricular septal defect
30. What is often the earliest ECG change seen during myocardial infarction?
B. Tall peaked T-waves
D. Tall P-waves
31. A patient is noted to have an abnormally shortened PR-interval on their ECG. Which of the following is the most likely cause?
A. Wolf Parkinson White Syndrome
B. AV nodal fibrosis
C. Left bundle branch block
D. Right bundle branch block
32. Premature atrial beat is every other beat
A. Atrial Bigeminy
B. Atrial Trigeminy
C. Ventricle Bigeminy
D. Ventricle Trigeminy
33. What would cause an inverted P-wave immediately before premature QRS?
A. Premature junctional beat causing retrograde atrial depolarization
B. Premature junctional beat causing retrograde atrial repolarization
C. Premature atrial beat causing reuograde atrial depolarization
D. Complete heart block
34. The rate of Paroxysmal tachycardia is typically:
A. 350+ bpm
B. 150-250 bpm
C. 150-300 bpm
D. 250-350 bpm
35. What would you typically see on EKG if a patient had Bundle Branch Block?
A. Wide QRS
B. Narrow QRS
C. Spiked PR interval
D. Absent P-wave
36. What is the best lead for determining RAD?
A. Lead II
B. Lead III
C. Lead I
D. Lead aVF
37. If you see a patient with a positive QRS in lead I, and a negative QRS in lead aVF, what sort of axis do they have?
C. Normal axis
D. Extreme right axis deviation
38. Which would you expect to see on EKG of a patient with normal axis?
A. Positive QRS in V1; negative QRS in Lead I
B. Positive QRS in lead I, positive QRS in lead AVF
C. Negative QRS in lead I, positive QRS in lead AVF
Negative QRS in V6, negative QRS in lead II
39. ST segment elevation is a sign of:
A. cute ischemic injury
C. Previous MI
D. Heart transplant
40. If you see that the ST segment is elevated, flat or concave elevation AND the entire T wave is elevated 0ﬂ’ baseline, what disease would most likely be happening?
A. Acute Ischemia
C. Forgot to take daily Lithium
D. Pleural effusion
41. You would typically see a peaked, tent like T wave in what condition?
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