EKG Set Up And Leads

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EKG Quizzes & Trivia

Set up/ leads


Questions and Answers
  • 1. 

    What is an ECG?

    • A.

      A graphic representaion

    • B.

      Measures electrical impulses originating form the myocardium

    • C.

      A specualized recording device that uses electrodes

    • D.

      Rate, rhythm, conduction

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    The correct answer is "all of the above." An ECG, or electrocardiogram, is a graphic representation that measures electrical impulses originating from the myocardium. It is performed using a specialized recording device that uses electrodes to detect and record the electrical activity of the heart. An ECG provides information about the heart's rate, rhythm, and conduction, making all of the given options correct.

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  • 2. 

    Why do doctors order ECG's?

    • A.

      Cost efficient

    • B.

      Non-invasive procedure

    • C.

      Quick and accurate results

    • D.

      Essential for diagnoses and treatment

    • E.

      to give the heart a jump on electrical impulses

    Correct Answer(s)
    A. Cost efficient
    B. Non-invasive procedure
    C. Quick and accurate results
    D. Essential for diagnoses and treatment
    Explanation
    Doctors order ECG's because they are cost efficient, non-invasive procedures that provide quick and accurate results. ECG's are essential for diagnoses and treatment as they give doctors important information about the heart's electrical activity, helping them identify any abnormalities or conditions that may require further attention.

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  • 3. 

    What wave shows Right and Left Atrial depolerization

    • A.

      P wave

    • B.

      QRS wave

    • C.

      T wave

    • D.

      U wave

    • E.

      QT interval

    Correct Answer
    A. P wave
    Explanation
    The P wave represents the depolarization of the atria, specifically the right and left atria. This wave indicates the initiation of the electrical impulse that causes the contraction of the atria, leading to blood being pumped into the ventricles. Therefore, the P wave is the correct answer as it directly corresponds to the depolarization of the atria.

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  • 4. 

    What wave shows Right and Left Ventricular depolerization?

    • A.

      P wave

    • B.

      QRS wave

    • C.

      T wave

    • D.

      U Wave

    • E.

      ST segment

    Correct Answer
    B. QRS wave
    Explanation
    The QRS wave shows the depolarization of both the right and left ventricles. During this wave, the electrical signals spread through the ventricles, causing them to contract and pump blood out of the heart. This wave is important for the proper functioning of the heart and is typically represented as a complex wave on an electrocardiogram (ECG).

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  • 5. 

    In what wave does Atrial repolerization happen?

    • A.

      P wave

    • B.

      QRS wave

    • C.

      T wave

    • D.

      Uwave

    Correct Answer
    B. QRS wave
    Explanation
    The QRS wave represents ventricular depolarization, which is the electrical activation of the ventricles. Atrial repolarization occurs during the QRS complex, but it is not specifically represented by the QRS wave. Therefore, the given answer is incorrect.

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  • 6. 

    What wave shows ventricular repolerization?

    • A.

      P wave

    • B.

      QRS wave

    • C.

      T wave

    • D.

      U wave

    Correct Answer
    C. T wave
    Explanation
    The T wave shows ventricular repolarization. After the ventricles contract during the QRS wave, they need to reset and prepare for the next electrical impulse. This resetting is known as repolarization, and it is represented by the T wave on an electrocardiogram (ECG). During the T wave, the ventricles are relaxing and getting ready for the next heartbeat.

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  • 7. 

    What wave is not always present?

    • A.

      P wave

    • B.

      QRS wave

    • C.

      T wave

    • D.

      U wave

    Correct Answer
    D. U wave
    Explanation
    The U wave is not always present in a normal electrocardiogram (ECG). It is a small deflection that follows the T wave and represents the repolarization of the Purkinje fibers in the heart. The presence of a U wave can indicate certain cardiac conditions such as electrolyte imbalances or abnormal ventricular repolarization. However, it is important to note that the U wave is not always seen in every individual's ECG and its absence does not necessarily indicate a problem.

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  • 8. 

    What is the PR interval?

    • A.

      Distance between the end of the P wave to the beggining of the QRS wave

    • B.

      Distance between the end of the P wave and the end of the QRS wave

    • C.

      Distance between the begining of the P wave and the end of the QRS wave

    • D.

      Distance between the begining of the P wave and the beginning of the QRS wave

    Correct Answer
    D. Distance between the begining of the P wave and the beginning of the QRS wave
    Explanation
    The PR interval is the time interval between the beginning of the P wave and the beginning of the QRS wave on an electrocardiogram (ECG). It represents the time it takes for the electrical signal to travel from the atria to the ventricles of the heart.

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  • 9. 

    QT interval is the ____ ?

    • A.

      Distance between the begining of the QRS wave and the end of the T wave

    • B.

      Distance between the end of the QRS wave and the end of the T wave

    • C.

      Distance between the end of the QRS wave and the begining of the T wave

    • D.

      Distance between the begining of the QRS and the begining of the T wave

    Correct Answer
    A. Distance between the begining of the QRS wave and the end of the T wave
    Explanation
    The QT interval is the distance between the beginning of the QRS wave and the end of the T wave.

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  • 10. 

    ST segment is the ____?

    • A.

      Distance between the begining of the QRS to the begining of the T wave

    • B.

      Distance between the begining of the QRS to the end of the T wave

    • C.

      Distance between the end of the QRS to the end of the T wave

    • D.

      Distance between the end of the QRS to the begining of the T wave

    Correct Answer
    D. Distance between the end of the QRS to the begining of the T wave
    Explanation
    The ST segment is the distance between the end of the QRS complex and the beginning of the T wave on an electrocardiogram (ECG).

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  • 11. 

    When the machine is checking frequency response of impulses. This shows as a squared off segment on the strip

    • A.

      Calibration pulse

    • B.

      Standardization pulse

    • C.

      Setting pulse

    • D.

      F.S. pulse

    • E.

      Frequnecy pulse test

    Correct Answer(s)
    A. Calibration pulse
    B. Standardization pulse
    Explanation
    The correct answer is calibration pulse and standardization pulse. When the machine is checking the frequency response of impulses, it uses a calibration pulse or standardization pulse. This pulse is represented as a squared off segment on the strip. It helps to calibrate or standardize the machine and ensure accurate measurements of frequency response.

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  • 12. 

    Each vertical square on the graph paper represents____ and is measured in _____ mV

    • A.

      Voltage, 0.04

    • B.

      Voltage , 0.1

    • C.

      Time, 0.04

    • D.

      Time, 0.1

    Correct Answer
    B. Voltage , 0.1
    Explanation
    Each vertical square on the graph paper represents voltage and is measured in 0.1 mV.

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  • 13. 

    Each horizontal small block represents ______, and is in _____mm/sec

    • A.

      Voltage , 0.04

    • B.

      Voltage, 0.1

    • C.

      Time , 0.04

    • D.

      Time, 0.1

    Correct Answer
    C. Time , 0.04
    Explanation
    Each horizontal small block represents a unit of time, and each block represents 0.04 seconds.

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  • 14. 

    Cardiac activity is recorded on ECG paper and is shown in ?

    • A.

      Peaks and valleys

    • B.

      Hight and width

    • C.

      Waves and deflection

    Correct Answer
    C. Waves and deflection
    Explanation
    Cardiac activity is recorded on ECG paper and is shown in waves and deflection. The electrical activity of the heart produces a series of waves and deflections on the ECG paper. These waves represent the different phases of the cardiac cycle, such as depolarization and repolarization of the atria and ventricles. The deflections indicate the direction and magnitude of the electrical impulses generated by the heart. Therefore, waves and deflection accurately represent the recording of cardiac activity on an ECG paper.

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  • 15. 

    Wave heights are also known as?

    • A.

      Peaks

    • B.

      Amplitudes

    • C.

      Interval widths

    Correct Answer
    B. Amplitudes
    Explanation
    Wave heights are commonly referred to as amplitudes. Amplitude is a measure of the maximum displacement or distance from the equilibrium position of a wave. It represents the magnitude or intensity of the wave and is often used to describe the size or height of the wave. Therefore, in the context of wave measurements, wave heights are synonymous with amplitudes.

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  • 16. 

    Paper generally runs through the machine at ____ mm/sec

    • A.

      20mm/sec

    • B.

      25 mm/sec

    • C.

      30 mm/sec

    • D.

      50 mm/sec

    Correct Answer
    B. 25 mm/sec
    Explanation
    The correct answer is 25 mm/sec. This is because paper generally runs through the machine at a speed of 25 mm/sec.

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  • 17. 

     If you have infants or fast rhythms and need to identify  the P, QRS, and T waves easier , a paper speed of _____ will be requested.

    • A.

      25 mm/sec

    • B.

      30 mm/sec

    • C.

      40 mm/sec

    • D.

      50 mm/sec

    • E.

      Unable to calculate thus a DR. must be notified

    Correct Answer
    D. 50 mm/sec
    Explanation
    A paper speed of 50 mm/sec will be requested if you have infants or fast rhythms and need to identify the P, QRS, and T waves easier. This is because a higher paper speed allows for a faster recording of the electrical activity of the heart, making it easier to distinguish the different waves.

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  • 18. 

    The use of electrolyte solution in electocardigraphy is used to ____?

    • A.

      To help conduct impulses

    • B.

      To help adhere the sensors to the skin surface

    • C.

      To keep the electodes from touching dry skin thus min. shock

    • D.

      Keep the electrode surface from rusting

    Correct Answer(s)
    A. To help conduct impulses
    B. To help adhere the sensors to the skin surface
    Explanation
    The use of electrolyte solution in electrocardiography is important for two main reasons. Firstly, it helps conduct impulses by providing a medium through which the electrical signals generated by the heart can travel more efficiently. This allows for accurate readings and interpretation of the heart's activity. Secondly, the electrolyte solution helps adhere the sensors to the skin surface, ensuring good contact between the electrodes and the skin. This is crucial for obtaining clear and reliable signals during the electrocardiogram recording.

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  • 19. 

    How many bipolar leads are there?

    • A.

      2

    • B.

      3

    • C.

      4

    • D.

      5

    • E.

      6

    Correct Answer
    B. 3
    Explanation
    There are three bipolar leads.

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  • 20. 

    Leads that record more than one point of contact?

    • A.

      Unipolar leads

    • B.

      Agumented leads

    • C.

      Bipolar leads

    • D.

      Precordial leads

    Correct Answer
    C. Bipolar leads
    Explanation
    Bipolar leads are leads that record more than one point of contact. In bipolar leads, two electrodes are used to measure the electrical activity of the heart. One electrode acts as the positive pole and the other as the negative pole. This allows for the measurement of the electrical potential difference between the two points, providing a more detailed and accurate representation of the heart's electrical activity.

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  • 21. 

    There are _____ unipolar leads.

    • A.

      6

    • B.

      7

    • C.

      8

    • D.

      9

    • E.

      12

    Correct Answer
    D. 9
    Explanation
    There are 9 unipolar leads in electrocardiography. Unipolar leads are used to measure the electrical activity of the heart from a single positive electrode, with the reference point being an average of all other electrodes. These leads provide a more comprehensive view of the heart's electrical activity from different angles and positions, allowing for a more accurate diagnosis of cardiac conditions.

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  • 22. 

    The unipolar lead that is recorded from the right arm is _____?

    Correct Answer
    AVR
    avr
    Explanation
    The unipolar lead recorded from the right arm is AVR (Augmented Vector Right). This lead provides a view of the electrical activity of the heart from the perspective of the right arm. It is one of the standard limb leads used in electrocardiography to assess the electrical conduction system of the heart. The lowercase "avr" is also accepted as a correct answer, as it represents the same lead.

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  • 23. 

    The  unipolar lead that is recorded from the left arm is the ____?

    Correct Answer
    AVL
    avl
    Explanation
    The unipolar lead that is recorded from the left arm is AVL. AVL stands for Augmented Vector Left arm, which is one of the six unipolar leads in the standard 12-lead electrocardiogram (ECG). It is recorded by placing the positive electrode on the left arm and the negative electrode on the right arm. AVL provides information about the electrical activity of the heart from a specific angle, helping to diagnose various cardiac conditions.

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  • 24. 

    The unipolar lead that is recorded form the left foot is _____?

    Correct Answer
    AVF
    avf
    Explanation
    The unipolar lead that is recorded from the left foot is AVF or avf. Unipolar leads are used in electrocardiography to record electrical activity from specific locations on the body. AVF is the abbreviation for augmented vector foot, which is a standard unipolar lead recorded from the left foot. The lowercase "avf" is also accepted as a valid abbreviation for the same lead.

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  • 25. 

    What is the correct color combination of the limb leads

    • A.

      RA red LA green RLorange LL black

    • B.

      RA white LA red RL black LL green

    • C.

      RA black LA white RL red LL green

    • D.

      RA white LA black RL green LL red

    Correct Answer
    D. RA white LA black RL green LL red
    Explanation
    The correct color combination of the limb leads is RA white, LA black, RL green, and LL red.

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  • 26. 

    You must alway identify yourself to the patient and identify  the patient by checking the armband , pt. name and confirm birthdate.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    It is important for healthcare professionals to always identify themselves to the patient and verify the patient's identity by checking their armband, name, and birthdate. This helps to ensure that the right patient is receiving the right care and prevents any potential errors or mix-ups. By confirming the patient's identity, healthcare professionals can provide personalized and safe care to the patient.

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  • 27. 

    You should inform the patient that the average test take about 15 min and they will feel a little discomfort from the electrical impulses form the machine.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because it is not necessary to inform the patient that the average test takes about 15 minutes and they will feel discomfort from the electrical impulses. The average duration of the test and the level of discomfort can vary depending on the specific test and the individual patient. It is important to provide accurate and specific information to the patient based on their particular situation rather than making a general statement.

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  • 28. 

    V1 V2 V3 V4 V5 V6 colors in order are_______

    • A.

      Red yellow green blue orange purple

    • B.

      Yellow red green blue orange purple

    • C.

      Blue green orange purple red yellow

    • D.

      Orange purple green red yellow blue

    • E.

      These leads have no color, just numbered

    Correct Answer
    A. Red yellow green blue orange purple
    Explanation
    The given answer correctly states that the colors in order are red, yellow, green, blue, orange, and purple. This is based on the sequence of colors provided in the question.

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  • 29. 

    If a patient has oily skin, excema rashes or excessive hair you can shave the site, rub sweaty skin with alcohol or choose a site with the least amount of hair, oil or irritation.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because if a patient has oily skin, eczema rashes, or excessive hair, it is recommended to shave the site, rub sweaty skin with alcohol, or choose a site with the least amount of hair, oil, or irritation. These actions can help to ensure better adherence of medical devices or treatments to the skin and prevent further irritation or complications.

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  • 30. 

    V3 is placed under the breast, if the breast is too large you can place it on top.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    V4 is the electrode that is placed under the breast.

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  • 31. 

    If your Pt. is having trouble with uncontrolled shaking of extremities (parkinsons) get them to ..

    • A.

      Place hands palm up under buttocks

    • B.

      Place hands 90 % in the air to min. blood flow thus stopping the tremors

    • C.

      Place hands palm down under buttocks

    • D.

      Do the test as is, and write on the strip " parkinsons tremor"

    Correct Answer
    C. Place hands palm down under buttocks
    Explanation
    Placing the hands palm down under the buttocks can help to stabilize the tremors caused by Parkinson's disease. This position allows for better support and control of the hands and helps to reduce the shaking. By placing the hands in this position, the patient may experience a decrease in the severity of the tremors and have improved motor control.

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  • 32. 

    What is a rhythm strip?

    • A.

      A continuous recording of a single lead or series of selected leads

    • B.

      A continuous recording of multi leads

    • C.

      A segment of a recording including two pulse sections

    Correct Answer
    A. A continuous recording of a single lead or series of selected leads
    Explanation
    A rhythm strip refers to a continuous recording of a single lead or series of selected leads. This recording allows for the evaluation and analysis of the electrical activity of the heart over a specific period of time. By examining the rhythm strip, healthcare professionals can identify any abnormalities or irregularities in the heart's electrical signals, which can aid in diagnosing various cardiac conditions.

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  • 33. 

    What are the  most common artifacts. check all that apply

    • A.

      Wandering base line

    • B.

      Muscle tremors

    • C.

      Ac interference

    • D.

      Power outage

    • E.

      Ink replacement light is on

    Correct Answer(s)
    A. Wandering base line
    B. Muscle tremors
    C. Ac interference
    Explanation
    The most common artifacts in this context are wandering base line, muscle tremors, and AC interference. Wandering base line refers to the movement of the baseline in an electrocardiogram, which can be caused by loose electrodes or patient movement. Muscle tremors can cause unwanted movement in the signal, often due to patient anxiety or shivering. AC interference refers to the presence of external electrical signals in the recording, which can be caused by nearby electrical equipment or poor grounding. The other options, power outage and ink replacement light being on, are not artifacts but rather unrelated issues.

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  • 34. 

    If the electrodes are applied too tightly or too loosley, or cable is pulling on an electrode; you must ensure lead wires are not twisted and are somewhat supported by the body. This artifact is called

    • A.

      Muscle tremors

    • B.

      Ac interference

    • C.

      Wandering baseline

    Correct Answer
    C. Wandering baseline
    Explanation
    If the electrodes are applied too tightly or too loosely, or if the cable is pulling on an electrode, it can cause movement or shifting of the electrodes. This movement can result in an unstable baseline on the electrocardiogram (ECG) tracing, which is known as a wandering baseline. To prevent this artifact, it is important to ensure that the lead wires are not twisted and are somewhat supported by the body.

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  • 35. 

    If a wire is fractured,  loose wire/electrode on the Right leg, electrodes are dirty ,  an improper grounding of the instrument  or electrical wiringin ceilings or walls or xray machines ,it will appear as a  REGULAR vertical spiked line.. it is caused by this artifact

    • A.

      Wandering base line

    • B.

      Ac interference

    • C.

      Muscle tremors

    Correct Answer
    B. Ac interference
    Explanation
    The correct answer is AC interference. AC interference refers to the presence of unwanted electrical signals in the form of alternating current that can interfere with the proper functioning of electronic devices. In this case, the fractured wire, loose wire/electrode, dirty electrodes, improper grounding, or faulty electrical wiring in the surroundings can introduce AC interference, which manifests as a regular vertical spiked line on the display. This artifact is a result of the interference caused by the AC signals.

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  • 36. 

    The patient talks, moves, is tense apprehensive or is not comfortable, you will get an IRREGULAR vibration on the recording..also known as this artifact

    • A.

      Wandering base line

    • B.

      Muscle tremor

    • C.

      Ac interference

    Correct Answer
    B. Muscle tremor
    Explanation
    When a patient talks, moves, is tense, apprehensive, or uncomfortable during a recording, it can cause irregular vibrations in the recording. These vibrations are known as muscle tremors. Muscle tremors can distort the baseline of the recording, making it appear irregular. Therefore, muscle tremor is the correct answer to this question.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 06, 2010
    Quiz Created by
    Pam Fetterer
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