EKG Multiple Choice Questions Quiz
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Are you ready for the challenging EKG multiple-choice questions quiz? Can you score high on this quiz with your knowledge of the topic? Not everyone knows how to use an EKG machine completely and deduce what the findings mean. The quiz below has been designed to test out what you understand about the machine and the way it is used in the field. Try this quiz and note what you need to read up on.
Questions and Answers
- 1.
Which leads are considered inferior leads?
- A.
II, III, and aVF
- B.
II, III, and aVR
- C.
I, II, and III
- D.
V1, II
Correct Answer
A. II, III, and aVFExplanation
II, III, and aVF are considered inferior leads because they provide a view of the inferior wall of the heart. These leads are placed on the lower part of the chest and provide information about the electrical activity in the heart's lower chambers. They are helpful in diagnosing conditions such as inferior myocardial infarction or ischemia in the inferior wall of the heart.Rate this question:
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- 2.
Which leads are considered (left) lateral leads?
- A.
I aVR
- B.
I, aVL
- C.
V5,V6
- D.
II, III
Correct Answer
B. I, aVLExplanation
The leads I and aVL are considered (left) lateral leads. These leads are positioned on the left side of the chest and provide a view of the lateral wall of the heart. Lead I is placed on the left arm, while lead aVL is placed on the left leg. These leads help in diagnosing conditions such as left ventricular hypertrophy, myocardial infarction, and arrhythmias affecting the lateral wall of the heart.Rate this question:
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- 3.
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
Correct Answer
A. 4th left intercostal spaceExplanation
The correct placement of V2 is in the 4th left intercostal space. This is a specific location on the chest where the electrode should be placed to obtain an accurate reading of the heart's electrical activity. Placing it in any of the other spaces mentioned would result in incorrect readings and could lead to misdiagnosis or improper treatment.Rate this question:
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- 4.
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
Correct Answer
C. 5th intercostal space, midclavicular lineExplanation
The correct answer is 5th intercostal space, midclavicular line. This is the correct placement for V4.Rate this question:
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- 5.
The correct placement for the V3 is:
- A.
Directly between leads V2 and V4
- B.
Directly between leads V1 and V4
- C.
Directly between leads V3 and V4
- D.
Directly between leads V2 and V3
Correct Answer
A. Directly between leads V2 and V4Explanation
The correct placement for the V3 lead is directly between leads V2 and V4. This placement allows for accurate measurement of the electrical activity of the heart in that specific area. Placing it between leads V1 and V4 or between leads V3 and V4 would not provide the same level of accuracy in measuring the electrical signals. Placing it between leads V2 and V3 would also not be correct as it would not cover the area between leads V2 and V4.Rate this question:
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- 6.
What view of the heart does leads V3-V4 give?
- A.
Anterior
- B.
Posterior
- C.
Lateral
- D.
None of these
Correct Answer
A. AnteriorExplanation
Leads V3-V4 give a view of the anterior part of the heart. These leads are placed on the chest, specifically on the left side of the sternum. The electrical activity recorded by these leads reflects the depolarization and repolarization of the anterior wall of the left ventricle. This view is important in diagnosing conditions such as myocardial infarction or ischemia in the anterior region of the heart.Rate this question:
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- 7.
In which lead is the P wave best seen?
- A.
Leads II and V1
- B.
III
- C.
AvF
- D.
V1
Correct Answer
A. Leads II and V1Explanation
The P wave represents atrial depolarization in an electrocardiogram (ECG). Lead II is positioned to capture electrical activity between the right arm and left leg, while lead V1 is positioned to capture electrical activity at the right side of the heart. Both leads II and V1 provide a good view of the P wave, allowing for accurate assessment of atrial depolarization.Rate this question:
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- 8.
In which lead would you see a BIPHASIC P wave?
- A.
V2-V3
- B.
V5-V6
- C.
V1
- D.
V3
Correct Answer
C. V1Explanation
In lead V1, a biphasic P wave can be observed. This means that the P wave has both positive and negative deflections. The positive deflection represents the depolarization of the atria towards the lead, while the negative deflection represents the depolarization away from the lead. This can be seen in lead V1 due to its orientation and placement on the chest.Rate this question:
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- 9.
Regarding the QRS complex: In which leads would you see a Deep S wave?
- A.
V1
- B.
V1, V2
- C.
V3, v4
- D.
V5,v6
Correct Answer
B. V1, V2Explanation
In leads V1 and V2, you would see a deep S wave in the QRS complex. The QRS complex represents the ventricular depolarization in an electrocardiogram (ECG). In leads V1 and V2, the electrodes are placed over the right ventricle, which is responsible for generating the S wave. Therefore, a deep S wave is observed in these leads.Rate this question:
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- 10.
Where is the R wave larger than the S wave?
- A.
Lead v4
- B.
None of these
- C.
Lead v1
- D.
Lead v2
Correct Answer
A. Lead v4Explanation
In an ECG, the R wave represents the depolarization of the ventricles, while the S wave represents the repolarization of the ventricles. In Lead V4, the R wave is larger than the S wave, indicating a stronger depolarization compared to repolarization. This suggests that the electrical activity in the ventricles is more pronounced in Lead V4.Rate this question:
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- 11.
What segment shows a sign of serious pathology in the condition when it's depressed?
- A.
ST
- B.
PR
- C.
R-R
- D.
QT
Correct Answer
A. STExplanation
The ST segment represents the interval between ventricular depolarization and repolarization on an electrocardiogram (ECG). When the ST segment is depressed, it indicates a sign of serious pathology, such as myocardial ischemia or infarction. This abnormality suggests that there is inadequate blood flow to the heart muscle, which can lead to tissue damage if not addressed promptly. Therefore, the depressed ST segment is a concerning finding that requires further evaluation and intervention.Rate this question:
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- 12.
What wave represents ventricular repolarization?
- A.
U wave
- B.
P wave
- C.
Q wave
- D.
T wave
Correct Answer
D. T waveExplanation
The T wave represents ventricular repolarization. During ventricular repolarization, the ventricles are resetting and preparing for the next contraction. The T wave on an electrocardiogram (ECG) represents the electrical activity of the ventricles as they recover from the previous contraction. It shows the repolarization of the ventricular muscle cells, which allows them to relax and refill with blood before the next heartbeat.Rate this question:
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- 13.
An R-R interval represents _______ on the EKG.
- A.
Two complete cardiac cycles
- B.
Rest and Relaxation
- C.
One complete cardiac cycle
- D.
Inferior MI
Correct Answer
C. One complete cardiac cycleExplanation
An R-R interval represents one complete cardiac cycle on the EKG. The R-R interval is the time interval between two consecutive R waves, which corresponds to the depolarization and repolarization of the ventricles. It represents the duration of one complete heartbeat, including both the systole (contraction) and diastole (relaxation) phases of the cardiac cycle. By measuring the R-R interval, healthcare professionals can assess the heart rate and detect any abnormalities in the rhythm or timing of the heartbeats.Rate this question:
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- 14.
Which of these conditions is related to the cerebral T waves?
- A.
Ischemic stroke
- B.
Intracranial bleed
- C.
Traumatic brain injury
- D.
All of these
Correct Answer
D. All of theseExplanation
All of the conditions mentioned - ischemic stroke, intracranial bleed, and traumatic brain injury - can be related to the cerebral T waves. Cerebral T waves are abnormal electrical activity in the brain that can be seen on an electroencephalogram (EEG) and are often associated with brain injury or dysfunction. Ischemic stroke, intracranial bleed, and traumatic brain injury can all cause disruption to the normal electrical activity in the brain, leading to the presence of cerebral T waves.Rate this question:
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- 15.
The QRS duration is usually
- A.
<0,10
- B.
<0,18
- C.
>0,10
- D.
>0,20
Correct Answer
A. <0,10Explanation
The QRS duration refers to the time it takes for the electrical impulses to travel through the ventricles of the heart. A normal QRS duration is typically less than 0.10 seconds. This indicates that the electrical conduction system of the heart is functioning properly and there are no abnormalities or delays in the ventricular depolarization.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Apr 14, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 29, 2013Quiz Created by
Megandisher
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