Quiz About Your Heart! Know All About ECG

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Quiz About Your Heart! Know All About ECG - Quiz
About This Quiz

An electrocardiogram (ECG or EKG) records the electrical signal from your heart to check for different heart conditions. Electrodes are placed on your chest to record your heart's electrical signals, which cause your heart to beat.
Electrocardiography is the process of producing an electrocardiogram.
This is a Quiz about your Heart! Know all about ECG

Quiz Preview

  • 2. 

    Define: Gain

    • To make someone gain weight for an ECG test

    • A control on the ECG machine that increases or decreases the size of the ECG tracings, normal setting is 10mm/mV

    • Help a patient gain heart beat

    Correct Answer
    A. A control on the ECG machine that increases or decreases the size of the ECG tracings, normal setting is 10mm/mV
    Explanation
    Gain in the context of an ECG machine refers to a control that adjusts the size of the ECG tracings. This control can increase or decrease the amplitude of the tracings, allowing for better visualization and analysis of the heart's electrical activity. The normal setting for gain is 10mm/mV, which means that each millivolt of electrical activity is represented by a 10mm vertical deflection on the ECG tracing. By adjusting the gain, healthcare professionals can optimize the ECG readings for accurate interpretation and diagnosis.

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  • 3. 

    disposable sensors that receive the electrical activity of the heart

    • Electrode

    • Speed

    • Input

    Correct Answer
    A. Electrode
    Explanation
    Electrode is the correct answer because it is a device used to detect and record electrical signals, such as the electrical activity of the heart. It is commonly used in medical settings to monitor and diagnose various heart conditions. The term "disposable sensors" suggests that these electrodes are designed for single-use and can be easily replaced, making them convenient and hygienic for medical procedures. The other options, speed and input, do not accurately describe the function or purpose of the given device.

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  • 4. 

    Define: Speed

    • A control on the ECG machine that regulates how fast or slow the paper runs during the tracings normal setting is 25mm/sec

    • How fast the heart beat is

    • Try to make the heart beat as fast as you can

    Correct Answer
    A. A control on the ECG machine that regulates how fast or slow the paper runs during the tracings normal setting is 25mm/sec
    Explanation
    The correct answer is "A control on the ECG machine that regulates how fast or slow the paper runs during the tracings normal setting is 25mm/sec." This answer accurately describes the definition of speed in the context of the ECG machine. The speed control on the machine determines the rate at which the paper moves, allowing for the measurement and recording of the electrical activity of the heart. The given answer is clear and concise in explaining this concept.

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  • 5. 

    Name three augmented leads

    • AVI, aVL, aVR

    • AVO, aVT, aVL

    • AVR, aVL, aVF

    Correct Answer
    A. AVR, aVL, aVF
    Explanation
    The three augmented leads in electrocardiography are aVR, aVL, and aVF. These leads are derived from the standard limb leads and provide additional information about the electrical activity of the heart from different angles. aVR represents the augmented unipolar right arm lead, aVL represents the augmented unipolar left arm lead, and aVF represents the augmented unipolar left leg lead. These leads are useful in diagnosing specific cardiac conditions and can help in localizing the origin of abnormal electrical activity in the heart.

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  • 6. 

    Whe preparing to do an ECG, you find an open package of disposable electrodes on top of the ECG cart. Would you use these electrodes? Why or why not?

    • Check the expiration day, and dry out, if not expired and not dry out, I would use them first

    • Use them first, since they on top of the ECG cart

    • Doen't matter either use them or later

    Correct Answer
    A. Check the expiration day, and dry out, if not expired and not dry out, I would use them first
    Explanation
    It is important to check the expiration date and ensure that the electrodes are not dry out before using them. If the electrodes are not expired and are not dry out, they can be used first as they are readily available on top of the ECG cart. This ensures that the electrodes are in proper condition and will provide accurate results during the ECG procedure.

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  • 7. 

    How is the 12-lead ECG recorded?

    • Only by 10 lead wires: six on the chest and four on the on the limbs or shoulders and lower abdomen.

    • 8 lead wires: five on the chest and five on the limbs

    • 10 lead wires: seven on the chest and three on the limbs or shoulders and lower abdomen

    Correct Answer
    A. Only by 10 lead wires: six on the chest and four on the on the limbs or shoulders and lower abdomen.
    Explanation
    The 12-lead ECG is recorded only by using 10 lead wires. These wires are placed on specific locations on the body. Six lead wires are attached to the chest, while four lead wires are attached to the limbs or shoulders and lower abdomen. This configuration allows for the recording of electrical activity from different angles and perspectives, providing a comprehensive view of the heart's electrical activity.

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  • 8. 

    What are the types of lead?

    • Bipolar: it traces two electrical currents at once. Unipolar:increases in size and it traces only one electrode

    • Polar: it traces five electrical currents at once. Bipolar: it traces one electrical current

    • There is only one type of lead

    Correct Answer
    A. Bipolar: it traces two electrical currents at once. Unipolar:increases in size and it traces only one electrode
    Explanation
    The correct answer is "Bipolar: it traces two electrical currents at once. Unipolar: increases in size and it traces only one electrode." This answer accurately describes the types of lead used in electrical tracing. Bipolar leads are capable of tracing two electrical currents simultaneously, while unipolar leads only trace one electrode and increase in size. This explanation provides a clear understanding of the different types of lead and their functions.

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  • 9. 

    What do you do when a patient has a seizure during the ECG?

    • You hold them down and then call for help and report the seizure. You keep doing the ECG eventhough there is a seizure

    • Stay with him or her, protect the patient from injury, don't restrain the patient, call for help and report the seizure. When the seizure is over do ECG and with post seizure on the ECG strip

    • You leave the room right away and let them be by themselves. You don't need to get help just wait until it is over

    Correct Answer
    A. Stay with him or her, protect the patient from injury, don't restrain the patient, call for help and report the seizure. When the seizure is over do ECG and with post seizure on the ECG strip
    Explanation
    When a patient has a seizure during the ECG, it is important to stay with them and provide support. The priority is to protect the patient from injury by ensuring a safe environment and not restraining them. Calling for help and reporting the seizure is necessary to ensure appropriate medical attention is provided. Once the seizure is over, the ECG can be continued, including documenting any post-seizure activity on the ECG strip. Leaving the patient alone or waiting for the seizure to be over without seeking help is not the appropriate response in this situation.

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  • 10. 

    How many lead wires are used to obtain a 12-lead ECG tracing?

    • 12-leads

    • 10-leads

    • 14-leads

    Correct Answer
    A. 10-leads
    Explanation
    A 12-lead ECG tracing is obtained using 10 leads. This is because the term "12-lead" refers to the 12 different views of the heart's electrical activity that are recorded. These views are obtained by placing electrodes on specific locations on the body, with each lead providing a different perspective. However, only 10 leads are actually used, as some of the leads are derived from a combination of electrode placements.

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  • 11. 

    ability to record more than one lead tracing at a time

    • Multi-channel

    • Single-channel

    • Signal processing

    Correct Answer
    A. Multi-channel
    Explanation
    The ability to record more than one lead tracing at a time refers to the concept of multi-channel recording. In multi-channel recording, multiple leads or channels are used to capture different electrical signals from the body simultaneously. This allows for a more comprehensive assessment of the electrical activity of the heart or other biological systems. In contrast, single-channel recording only captures one lead tracing at a time. Therefore, the correct answer is multi-channel.

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  • 12. 

    When should you follow Universal Precautions?

    • Never

    • Sometimes

    • At all times

    • Every other patient

    Correct Answer
    A. At all times
    Explanation
    Universal Precautions are a set of infection control practices that healthcare providers follow to prevent the transmission of diseases. These precautions should be followed at all times, regardless of the patient's known or suspected infection status. By consistently practicing Universal Precautions, healthcare workers can minimize the risk of exposure to bloodborne pathogens and other infectious agents, protecting both themselves and their patients. Therefore, the correct answer is "At all times."

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  • 13. 

    What happens when there is flat line?

    • Check the patient first, if the patient Ok than check the electrodes and lead wires, if the patient not respond tread the emergency

    • At all times when you see this the patient died

    • Take the patient to the emergency room right away

    Correct Answer
    A. Check the patient first, if the patient Ok than check the electrodes and lead wires, if the patient not respond tread the emergency
    Explanation
    The correct answer suggests that when there is a flat line, the first step is to check the patient's condition. If the patient is okay, then the next step is to check the electrodes and lead wires. However, if the patient does not respond, it is advised to treat the situation as an emergency. This answer provides a logical sequence of actions to be taken in response to a flat line, ensuring that the patient's well-being is prioritized.

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  • 14. 

    Which of the following is not a type of lead?

    • Standard

    • Augmented

    • Input

    • Precordial

    Correct Answer
    A. Input
    Explanation
    The given options include the types of leads, except for "Input." Standard, augmented, and precordial are all types of leads commonly used in medical settings to monitor and record electrical activity in the heart. However, "Input" is not a recognized type of lead in this context.

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  • 15. 

    You are preparing to attach the electrodes and lead wires for a 12-lead ECG. You are unable to read the letters on each of the lead wires. You place the electrodes and lead wires, but when you run the tracing it looks like a bunch of scratches. What do you think the problem is and how would you solve it?

    • Pobably attached lead wires incorrectly. check the color and manufecturer's direction to indentify the correct color

    • Maybe has someting wrong on the ECG machine and check manufecturer's manual

    • Doen't matter the physician still can read it

    Correct Answer
    A. Pobably attached lead wires incorrectly. check the color and manufecturer's direction to indentify the correct color
    Explanation
    The problem is most likely that the lead wires were attached incorrectly. To solve this issue, one should check the color of the lead wires and refer to the manufacturer's directions to identify the correct color for each electrode.

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  • 16. 

    aVR, aVL, aVF

    • Standard limb lead

    • Augmented lead

    • Precordial lead

    Correct Answer
    A. Augmented lead
    Explanation
    The correct answer is "augmented lead". The three leads mentioned, aVR, aVL, and aVF, are part of the augmented leads in an electrocardiogram (ECG). These leads are derived from the standard limb leads and provide additional information about the electrical activity of the heart. Each augmented lead measures the electrical potential of the heart from a different perspective, with aVR measuring from the right arm, aVL from the left arm, and aVF from the left leg. These leads help in diagnosing various cardiac conditions by providing a comprehensive view of the heart's electrical activity.

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  • 17. 

    What is the standard paper speed?

    • 25 mm/sec

    • 50 mm/sec

    • 0.25 mm/sec

    • 0.50 mm/sec

    Correct Answer
    A. 25 mm/sec
    Explanation
    The standard paper speed is 25 mm/sec. This means that the paper moves at a rate of 25 millimeters per second.

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  • 18. 

    What will you need to know to prepare yourself for recording your first ECG?

    • System measured machine

    • Equipment and lead system

    • Picture structure

    Correct Answer
    A. Equipment and lead system
    Explanation
    To prepare yourself for recording your first ECG, you will need to know about the equipment and lead system. This includes understanding how to set up and operate the ECG machine, as well as knowing the different types of leads and their placement on the body. By familiarizing yourself with the equipment and lead system, you will be able to accurately record and interpret the electrical activity of the heart.

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  • 19. 

    indicates voltage on the ECG tracing

    • MV

    • Mm

    • Speed

    Correct Answer
    A. MV
    Explanation
    The correct answer is "mV" because in an ECG tracing, the voltage is measured in millivolts (mV). The ECG machine records the electrical activity of the heart and converts it into a graphical representation on paper or a screen. The height of the waves on the ECG tracing represents the voltage, and it is measured in millivolts. By analyzing the voltage changes, healthcare professionals can diagnose various heart conditions and abnormalities.

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  • 20. 

    What do you do for a Pediatric ECG?

    • There is no Pediatric ECG

    • This is used to the elderly

    • Don't use hard words with the children, let the parent come with the child if they want, tell the child you are taking a picture to keep them not moving, set the speed to 50mm/sec for the fast heart beats, and move the V3 lead to the right side of the chest

    Correct Answer
    A. Don't use hard words with the children, let the parent come with the child if they want, tell the child you are taking a picture to keep them not moving, set the speed to 50mm/sec for the fast heart beats, and move the V3 lead to the right side of the chest
    Explanation
    When performing a Pediatric ECG, it is important to use age-appropriate language and not use hard words with the children. Allowing the parent to accompany the child can provide comfort and reassurance. Informing the child that you are taking a picture can help keep them still during the procedure. Setting the speed to 50mm/sec is necessary for accurately capturing fast heart beats. Lastly, moving the V3 lead to the right side of the chest is a specific technique used in Pediatric ECGs.

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  • 21. 

    This ECG tracing was produced at a speed of  50 mm/sec. What should you do?

    • Make the tracing as shown here, notify the health care provide who will be interpreting the tracing

    • Make the tracing as shown here, don't need notify the health care provide who will be interpreting the tracing

    • Make the tracing as shown here, I will be interpreting the tracing to the provide

    Correct Answer
    A. Make the tracing as shown here, notify the health care provide who will be interpreting the tracing
  • 22. 

    The Einthoven triangle is formed by using the following placement sites.

    • Right arm, left arm, left leg

    • Right arm, left arm, right leg

    • Right arm, middle of chest, left leg

    • None of the above

    Correct Answer
    A. Right arm, left arm, left leg
    Explanation
    The correct answer is right arm, left arm, left leg. The Einthoven triangle is a theoretical triangle formed by the placement of three electrodes on the body to measure the electrical activity of the heart. The right arm electrode is placed on the right arm, the left arm electrode is placed on the left arm, and the left leg electrode is placed on the left leg. This configuration allows for the measurement of the electrical potential differences between these three points, which can be used to analyze the heart's electrical activity and diagnose any abnormalities.

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  • 23. 

    What is the lead involvement of the Einthoven triangle?

    • Lead I: a positive wave from the right arm to the left arm. Lead II: a positive wave from the right arm to the left leg. Lead III: is from the left arm to the left leg.

    • Lead I: from the left leg to the left arm . Lead II: from the left arm to the right leg. Lead III: from the right arm to the right leg.

    • There are no lead involvements

    Correct Answer
    A. Lead I: a positive wave from the right arm to the left arm. Lead II: a positive wave from the right arm to the left leg. Lead III: is from the left arm to the left leg.
    Explanation
    The lead involvement of the Einthoven triangle refers to the direction of the positive wave in each lead. In Lead I, the positive wave goes from the right arm to the left arm. In Lead II, the positive wave goes from the right arm to the left leg. In Lead III, the positive wave goes from the left arm to the left leg. This configuration forms the Einthoven triangle, which is used to analyze the electrical activity of the heart.

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  • 24. 

    data that is entered into an ECG machine

    • Speed

    • Input

    • Output display

    Correct Answer
    A. Input
    Explanation
    The given correct answer is "input". This means that the data that is entered into an ECG machine is considered as an input. In the context of an ECG machine, input refers to the information or signals that are provided to the machine for analysis and processing. In this case, the data being entered into the machine is the raw ECG readings from a patient's heart, which will then be processed and displayed as an output.

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  • 25. 

    "Bipolar leads" means that

    • One electrode is placed on the chest and the machine arbitrarily places one behind the person

    • Both positive and negative electrodes are placed on the patient's body

    • Einthoven's triangle is not used

    • One of the leg limbs is used while the machine augments the rhythm

    Correct Answer
    A. Both positive and negative electrodes are placed on the patient's body
    Explanation
    "Bipolar leads" refers to a type of electrocardiogram (ECG) lead placement where both positive and negative electrodes are placed on the patient's body. This allows for the measurement of electrical activity between two specific points, providing a more accurate representation of the heart's electrical signals. This method is commonly used in ECG recordings to diagnose and monitor various cardiac conditions.

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  • 26. 

    Why do we clean lead areas?

    • So it doesn't dusty: use soft cloth moistened with acetone

    • For the best results: use soft cloth moistened with disinfectant

    • To keep it from breaking: use soft cloth moistened with ether

    Correct Answer
    A. For the best results: use soft cloth moistened with disinfectant
    Explanation
    Cleaning lead areas with a soft cloth moistened with disinfectant is recommended for the best results because it helps to effectively remove dirt, bacteria, and other contaminants from the surface. Disinfectants are specifically formulated to kill germs and provide a clean and hygienic environment. Since lead areas can be prone to accumulating dust and potentially harmful substances, using a disinfectant can help ensure a thorough and safe cleaning process.

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  • 27. 

    lead I, lead II, lead III

    • Augmented lead

    • Standard limb lead

    • Precordial lead

    Correct Answer
    A. Standard limb lead
    Explanation
    Standard limb leads are a type of electrocardiogram (ECG) lead that are placed on the limbs of a patient to record electrical activity of the heart. These leads are typically placed on the right arm, left arm, and left leg. They provide a standard view of the electrical activity of the heart from different angles, allowing for a comprehensive assessment of the heart's function. Standard limb leads are commonly used in clinical practice to diagnose and monitor various heart conditions.

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  • 28. 

    When you start to perform an ECG on a patient, you notice a red line along the bottom of the ECG paper. What should you do?

    • It shows the paper is runing out, I should change paper before performing next ECG

    • It shows something wrong in the ECG machine, I should check the machine before performing next ECG

    • It shows normal on the ECG machine, I shouldn't need to worry about it

    Correct Answer
    A. It shows the paper is runing out, I should change paper before performing next ECG
    Explanation
    The red line along the bottom of the ECG paper indicates that the paper is running out. To ensure accurate results and avoid any interruptions during the next ECG, it is necessary to change the paper before proceeding.

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  • 29. 

    The silver electrodes are kept on the patient who frequent ECG and checked daily

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because silver electrodes are commonly used in electrocardiography (ECG) to detect and record the electrical activity of the heart. These electrodes are placed on specific locations on the patient's body to obtain accurate readings of the heart's electrical signals. Since ECG is a common procedure performed on patients who require frequent monitoring or daily checks, it is reasonable to keep silver electrodes on them for easy access and convenience during the procedure.

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  • 30. 

    Which of the ECG controls can be used to reduce artifact? Is it antifact filter?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The antifact filter is a control on an ECG machine that can be used to reduce artifact. This filter helps to eliminate any unwanted interference or noise that may be present in the ECG signal. By applying the antifact filter, the quality of the ECG recording can be improved, making it easier to interpret and analyze the electrical activity of the heart. Therefore, the statement "True" is the correct answer as the antifact filter can indeed be used to reduce artifact in an ECG.

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  • 31. 

    changes the size of the ECG tracing

    • Lead

    • Gain

    • Speed

    Correct Answer
    A. Gain
    Explanation
    The term "gain" refers to the amplification or magnification of a signal. In the context of an ECG (electrocardiogram) tracing, adjusting the gain would change the size or amplitude of the tracing. Increasing the gain would make the tracing appear larger, while decreasing the gain would make it appear smaller. This adjustment is useful for enhancing the visibility of certain features or abnormalities in the ECG waveform.

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  • 32. 

    The type of electrodes most commonly used are____________and are used_________________

    • Disposable, more than once

    • Reusable, more than once

    • Disposable, once

    • Reusable, once

    Correct Answer
    A. Disposable, once
    Explanation
    Disposable electrodes are commonly used in medical settings because they are designed for single use. This helps to prevent the risk of cross-contamination between patients. After each use, disposable electrodes are discarded, ensuring a fresh and hygienic surface for the next patient. This makes them a convenient and practical choice for medical professionals.

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  • 33. 

    When do we reverse the lead placement to the right side?

    • When there is dextrocardia, when the organs in the chest are on the opposite or right side of the chest

    • Pextrocardia, when the organs stay on the left side but you want to check what is on the right side

    • No one has a heart on the opposite side

    Correct Answer
    A. When there is dextrocardia, when the organs in the chest are on the opposite or right side of the chest
    Explanation
    The lead placement is reversed to the right side when there is dextrocardia, which means the organs in the chest are on the opposite or right side of the chest. This is because the standard placement of leads assumes that the heart is on the left side, so in cases of dextrocardia, the leads need to be reversed to accurately monitor the heart's activity.

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  • 34. 

    Should be set the stylus to standardization to avoid smearing and bleeding

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Setting the stylus to standardization helps in avoiding smearing and bleeding. This means that by following a standard or predefined set of guidelines or specifications, the stylus can be calibrated or adjusted to ensure that it operates in a consistent and reliable manner. This can prevent issues such as smudging or ink bleeding, which can occur if the stylus is not properly calibrated or if it is not set to a standardized configuration. Therefore, the statement "Should be set the stylus to standardization to avoid smearing and bleeding" is true.

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  • 35. 

    V1, V2, V3, V4, V5, V6

    • Standard limb lead

    • Augmented lead

    • Precordial lead

    Correct Answer
    A. Precordial lead
    Explanation
    The given terms are different types of leads used in electrocardiography (ECG). A standard limb lead is a lead that is placed on the limbs of a patient to measure electrical activity in the heart. An augmented lead is a lead that is created by combining two limb leads to provide a different perspective on the heart's electrical activity. Precordial leads are leads that are placed on the chest to measure electrical activity in the heart from different angles. Therefore, the correct answer is "precordial lead" as it is a specific type of lead used in ECG.

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  • 36. 

    displays the tracing for the electrical activity of the heart

    • Input

    • Output display

    • Speed

    Correct Answer
    A. Output display
    Explanation
    The correct answer is "output display" because it accurately describes the purpose of the given statement. The statement is referring to a device or system that shows the tracing or recording of the electrical activity of the heart. This could be a monitor or screen that displays the information in real-time or as a recorded history.

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  • 37. 

    smallest ventical line or box

    • 1 second

    • 0.04 second

    • 0.2 second

    Correct Answer
    A. 0.04 second
    Explanation
    The correct answer is 0.04 second. This is the smallest time interval mentioned in the options. It is shorter than 1 second and 0.2 second. Therefore, it is the correct answer.

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  • 38. 

    What is Code Blue and why are the wires left attached?

    • Code Blue is urgent usually done in the after noon. The wires are left to check on the heart once in a while.

    • Code Blue is for care that can be anytime. The wires are left so they don't have to take it off later.

    • Code Blue is for immediate ECG when someone has chest pain or change of heat rhythm usually done in the morning. The wires are left attached to see how the heart is over time.

    Correct Answer
    A. Code Blue is for immediate ECG when someone has chest pain or change of heat rhythm usually done in the morning. The wires are left attached to see how the heart is over time.
    Explanation
    Code Blue is a term used for an immediate electrocardiogram (ECG) procedure that is performed when someone experiences chest pain or a change in heart rhythm, typically in the morning. The wires used during the procedure are left attached to the patient's body to continuously monitor the heart's activity and observe any changes over time. This allows healthcare professionals to closely monitor the patient's condition and make informed decisions regarding their treatment.

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  • 39. 

    When performing a 12- lead ECG, you notice that the tracing line is very thick and hard to view. In addition, one of the leads does not record properly. What would you do?

    • Maybe has someting wrong on the ECG machine and check manufecturer's manual

    • Chech the stylus control, turn the heat down, it producing a inner line. machine must be standardized before use. If new machine check LCD display to iddentify the problem or check manufcture's manual

    • Check the stylus control, turn high the heat so the line is thinner

    Correct Answer
    A. Chech the stylus control, turn the heat down, it producing a inner line. machine must be standardized before use. If new machine check LCD display to iddentify the problem or check manufcture's manual
    Explanation
    The correct answer suggests that the thick and hard to view tracing line and the improper recording of one lead may be due to an issue with the stylus control. It recommends turning down the heat to produce a thinner line. It also mentions the importance of standardizing the machine before use and checking the manufacturer's manual for troubleshooting guidance. If the machine is new, it suggests checking the LCD display to identify the problem.

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  • 40. 

    Which type of electrode is used when monitoring a patient that will be having serial ECG done?

    • Silver disposable electrodes

    • Reusable electrodes

    • Mix electrodes

    Correct Answer
    A. Silver disposable electrodes
    Explanation
    Silver disposable electrodes are used when monitoring a patient that will be having serial ECG done because they are convenient, hygienic, and provide good electrical conductivity. They can be easily attached and detached from the patient's skin, reducing the risk of infection. Additionally, silver electrodes have a low impedance, ensuring accurate and reliable ECG readings. Reusable electrodes may not be suitable for serial ECGs as they may require cleaning and disinfection between uses, which can be time-consuming and may increase the risk of cross-contamination. Mix electrodes are not commonly used in ECG monitoring.

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  • 41. 

    records one lead tracing at a time

    • Multi-channel

    • Signal processing

    • Single-channel

    Correct Answer
    A. Single-channel
    Explanation
    This answer suggests that the system or device being referred to is capable of recording only one lead tracing at a time. This means that it can only capture and process the electrical activity of one specific area or location in the body. It does not have the capability to simultaneously record multiple lead tracings from different areas or locations. Therefore, it is categorized as a single-channel system or device.

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  • 42. 

    Define: AC (alternating current) interference

    • People walking near the ECG machines

    • Moving of the muscles making unwanted markings on the ECG

    • Unwanted markings on the ECG caused by other electrical current sources, dirty electrodes

    Correct Answer
    A. Unwanted markings on the ECG caused by other electrical current sources, dirty electrodes
    Explanation
    AC interference refers to unwanted markings on an ECG caused by other electrical current sources and dirty electrodes. This interference can occur when there are electrical currents present in the environment that interfere with the ECG signal, resulting in artifacts or unwanted markings on the ECG tracing. Additionally, dirty electrodes can also cause interference by creating a poor electrical connection between the patient's skin and the electrodes, leading to inaccurate or distorted ECG readings.

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  • 43. 

    What is the number of complexes in the above 6-second interval? What is the heart rate?

    • Senven complexes, 70 heart rate

    • Senven complexes, 50 heart rate

    • Senven complexes, 90 heart rate

    Correct Answer
    A. Senven complexes, 70 heart rate
    Explanation
    The given answer states that there are seven complexes in the 6-second interval and the heart rate is 70. This means that there were seven instances of electrical activity in the heart during the given time period, and the heart rate is calculated to be 70 beats per minute.

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  • 44. 

    When recording an ECG and the deflections or spikes of the tracing are not large enough, what should you do?

    • Stay or don't need the adjust the gain

    • Decrease or adjust the gain

    • Increase or adjust the gain

    Correct Answer
    A. Increase or adjust the gain
    Explanation
    When recording an ECG, the amplitude of the deflections or spikes on the tracing represents the electrical activity of the heart. If the deflections or spikes are not large enough, it means that the signal is weak and may be difficult to interpret accurately. To improve the visibility of the ECG waveform, it is necessary to increase or adjust the gain. This amplifies the signal and makes the deflections or spikes more prominent, allowing for a better analysis of the heart's electrical activity.

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  • 45. 

    indicates time on the ECG tracing

    • Mm

    • MV

    • Speed

    Correct Answer
    A. Mm
    Explanation
    The term "mm" typically refers to millimeters on an ECG tracing. In an ECG, the horizontal axis represents time, and each small square represents a specific duration of time. By measuring the distance between specific points on the ECG tracing in millimeters, healthcare professionals can determine the duration of various cardiac events, such as the duration of an electrical impulse or the length of a specific wave. Therefore, "mm" indicates time on the ECG tracing.

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  • 46. 

    Which lead tracing must be augmented by the ECG machine to be able to see the different ECG waveforms?

    • Lead I

    • Lead II

    • Lead V6

    • Lead aVF

    Correct Answer
    A. Lead aVF
    Explanation
    Lead aVF must be augmented by the ECG machine to be able to see the different ECG waveforms. This is because lead aVF is one of the standard limb leads that provides a specific view of the electrical activity of the heart. By augmenting lead aVF, the ECG machine can enhance the signal and display the various waveforms, such as the P wave, QRS complex, and T wave, which are important for interpreting the cardiac rhythm and detecting any abnormalities.

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  • 47. 

    The physician places a stack of charts on top of an ECG report you just placed on his desk. What should you do?

    • The report to the physician's attention and put next to such as alcohol, plastic, sunlight, and X-ray can be damage

    • The report to the physician's attention and put on such as alcohol, plastic, sunlight, and X-ray can be damage

    • The report to the physician's attention and away from such as alcohol, plastic, sunlight, and X-ray can be damage

    Correct Answer
    A. The report to the physician's attention and away from such as alcohol, plastic, sunlight, and X-ray can be damage
    Explanation
    The correct answer suggests that the report should be brought to the physician's attention and placed away from potential sources of damage such as alcohol, plastic, sunlight, and X-ray. This implies that the report should be handled with care and kept in a safe location to avoid any harm or deterioration.

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  • 48. 

    conductor wire attached to the ECG machine

    • Electrode

    • Lead

    • Speed

    Correct Answer
    A. Lead
    Explanation
    A lead is a conductor wire that is attached to the ECG machine. It is used to connect the electrodes to the machine, allowing for the measurement and recording of electrical signals from the heart. Leads are essential for obtaining accurate and reliable ECG readings.

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  • 49. 

    controls the speed of the paper during an ECG tracing

    • Speed

    • MV

    • Mm

    Correct Answer
    A. Speed
    Explanation
    The correct answer is "speed" because it controls the speed of the paper during an ECG tracing. This means that the speed setting determines how fast the paper moves while recording the electrical activity of the heart. By adjusting the speed, healthcare professionals can control the rate at which the ECG waveform is displayed on the paper, allowing for a more accurate analysis and interpretation of the results.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 09, 2011
    Quiz Created by
    Wkhuu1
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