EKG Technician Certification Prep practice exam g
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1. What does the P wave represent in the cardiac cycle?
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Atrial repolarization
The P wave represents atrial depolarization, which is the electrical
activation of the atria.
2. Which lead is created by placing electrodes on the right arm, left arm, and
left leg?
A. Lead I
B. Lead II
C. Lead III
D. Lead aVR
Lead III records the electrical activity between the left arm and left leg.
3. What is the standard paper speed of an EKG machine?
A. 10 mm/sec
B. 25 mm/sec
, C. 50 mm/sec
D. 75 mm/sec
The standard paper speed is 25 mm/sec, allowing consistent measurement
of cardiac intervals.
4. How many leads are recorded in a standard 12-lead EKG?
A. 6
B. 10
C. 12
D. 14
Although 10 electrodes are used, 12 leads are recorded, providing different
views of the heart.
5. What does the QRS complex represent?
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
D. Atrial repolarization
The QRS complex reflects the depolarization of the ventricles.
6. What is the normal duration of the PR interval?
A. 0.04–0.08 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.08–0.12 seconds
A normal PR interval is 0.12–0.20 seconds, indicating proper conduction
from atria to ventricles.
, 7. Which lead is considered the rhythm strip on a 12-lead EKG?
A. Lead II
B. Lead I
C. Lead III
D. Lead V1
Lead II closely follows the heart's electrical axis and is ideal for rhythm
analysis.
8. Which of the following is a sign of a myocardial infarction on an EKG?
A. Short PR interval
B. Wide P wave
C. ST segment elevation
D. Inverted T wave
ST elevation suggests active injury to myocardial tissue.
9. Where is V1 placed?
A. 4th intercostal space, left sternal border
B. 4th intercostal space, right sternal border
C. 5th intercostal space, midclavicular line
D. 2nd intercostal space, right sternal border
V1 is placed at the 4th intercostal space, right of the sternum.
10.What should the EKG technician do if a patient complains of chest pain
during an EKG?
A. Continue the test
B. Tell the patient it’s normal
C. Stop the test and notify a physician
Exam Prep| Questions And Correct Answers
(Verified Answers) Plus Rationales 2025 Q&A |
Instant Download Pfd
1. What does the P wave represent in the cardiac cycle?
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Atrial repolarization
The P wave represents atrial depolarization, which is the electrical
activation of the atria.
2. Which lead is created by placing electrodes on the right arm, left arm, and
left leg?
A. Lead I
B. Lead II
C. Lead III
D. Lead aVR
Lead III records the electrical activity between the left arm and left leg.
3. What is the standard paper speed of an EKG machine?
A. 10 mm/sec
B. 25 mm/sec
, C. 50 mm/sec
D. 75 mm/sec
The standard paper speed is 25 mm/sec, allowing consistent measurement
of cardiac intervals.
4. How many leads are recorded in a standard 12-lead EKG?
A. 6
B. 10
C. 12
D. 14
Although 10 electrodes are used, 12 leads are recorded, providing different
views of the heart.
5. What does the QRS complex represent?
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
D. Atrial repolarization
The QRS complex reflects the depolarization of the ventricles.
6. What is the normal duration of the PR interval?
A. 0.04–0.08 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.08–0.12 seconds
A normal PR interval is 0.12–0.20 seconds, indicating proper conduction
from atria to ventricles.
, 7. Which lead is considered the rhythm strip on a 12-lead EKG?
A. Lead II
B. Lead I
C. Lead III
D. Lead V1
Lead II closely follows the heart's electrical axis and is ideal for rhythm
analysis.
8. Which of the following is a sign of a myocardial infarction on an EKG?
A. Short PR interval
B. Wide P wave
C. ST segment elevation
D. Inverted T wave
ST elevation suggests active injury to myocardial tissue.
9. Where is V1 placed?
A. 4th intercostal space, left sternal border
B. 4th intercostal space, right sternal border
C. 5th intercostal space, midclavicular line
D. 2nd intercostal space, right sternal border
V1 is placed at the 4th intercostal space, right of the sternum.
10.What should the EKG technician do if a patient complains of chest pain
during an EKG?
A. Continue the test
B. Tell the patient it’s normal
C. Stop the test and notify a physician
