Quiz About Your Heart! Know All About ECG

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1/67 Questions

What will you need to know to prepare yourself for recording your first ECG?
- System measured machine
- Equipment and lead system
- Picture structure

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

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2.

If you attempt to record an ECG and no tracing is seen, what should you do?
- Check the lead wires to make sure they are placed correctly
- Check the lead wires make sure they connect to the machine
- Check the lead wires make sure they connect to the body
Correct Answer

A. Check the lead wires to make sure they are placed correctly

Explanation

If you attempt to record an ECG and no tracing is seen, checking the lead wires to make sure they are placed correctly would be the most appropriate action. The lead wires need to be properly positioned on the body in order to capture the electrical activity of the heart. If they are not placed correctly, the ECG machine will not be able to detect and record the tracing. By ensuring that the lead wires are correctly placed, the chances of obtaining an accurate ECG tracing are increased.

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3.

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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4.

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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5.

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
6.

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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7.

A multichannel ECG monitors all 12 leads but usually records how many leads at one time?
- Six leads
- Three leads
- Twelve leads
Correct Answer

A. Three leads

Explanation

A multichannel ECG is capable of monitoring all 12 leads, which means it can measure the electrical activity of the heart from different angles. However, it usually records only three leads at one time. This is because recording all 12 leads simultaneously would require more electrodes and increase the complexity of the procedure. By recording three leads, healthcare professionals can still obtain valuable information about the heart's electrical activity and diagnose various cardiac conditions.

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8.

What are some reasons that you may change the speed of the ECG tracing?
- Rhythm rate is too fast, can't clearly idenfity waves, because they are too close together per physician's order
- Rhythm rate is too slow, can't clearly idenfity waves, because they are too far away together per physician's order
- Rhythm rate is not clear, can't clearly idenfity waves, because they are too close together per physician's order
Correct Answer

A. Rhythm rate is too fast, can't clearly idenfity waves, because they are too close together per physician's order

Explanation

The speed of the ECG tracing may need to be changed if the rhythm rate is too fast, making it difficult to clearly identify waves because they are too close together. This change in speed can be done per physician's order to ensure accurate interpretation of the ECG.

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9.

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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10.

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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11.

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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1
12.

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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13.

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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14.

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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15.

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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16.

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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17.

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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18.

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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1
19.

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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20.

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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21.

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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22.

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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23.

amplifies the electrical impulse and converts to mechanical action
- Multi-channel
- Single-channel
- Signal processing
Correct Answer

A. Signal processing

Explanation

Signal processing refers to the manipulation and analysis of signals, such as electrical impulses. It involves various techniques and algorithms to modify, enhance, or extract information from the signals. In this context, the given correct answer suggests that signal processing is the process of amplifying the electrical impulse and converting it into mechanical action. This implies that signal processing is used to enhance and transform the electrical impulse into a form that can produce mechanical movement or action.

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24.

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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25.

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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26.

ECG machines have three basic function. They are
- Input, signal processing, and output display
- Input, standardization, and output display
- Multichannel, single-channel, and signal processing
- Standardization, input display, and output display
Correct Answer

A. Input, signal processing, and output display

Explanation

The correct answer is "input, signal processing, and output display." ECG machines require an input of electrical signals from the body, which are then processed to remove noise and enhance the quality of the signal. The processed signal is then displayed on the output, usually in the form of a graph or waveform. This allows healthcare professionals to analyze the electrical activity of the heart and diagnose any abnormalities or conditions.

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27.

To perform an ECG with accuracy, the best source to obtain specific information about the machine is
- The policy and procedure manual
- The manufacturer's directions
- Your supervisor
- Your texbook
Correct Answer

A. The manufacturer's directions

Explanation

To perform an ECG with accuracy, it is important to refer to the manufacturer's directions for specific information about the machine. The manufacturer's directions provide detailed instructions on how to properly operate and use the machine, ensuring accurate results. The policy and procedure manual may provide general guidelines, but the manufacturer's directions are the best source for specific information about the machine. Your supervisor may have knowledge about the machine, but the manufacturer's directions are more reliable. Your textbook may provide some information, but it may not be up-to-date or specific to the machine being used.

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28.

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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29.

"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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30.

What is the purpose of the LCD display?
- To allow entry and display of patient information
- To show the results of the ECG
- To sound alarms and errors
- To assist the patient to understand the procedure
Correct Answer

A. To allow entry and display of patient information

Explanation

The purpose of the LCD display is to allow healthcare professionals to enter and display patient information. This could include vital signs, medical history, medications, and other relevant data. The LCD display provides a visual interface for healthcare providers to input and access patient information quickly and efficiently. This helps in accurate documentation, monitoring, and decision-making during patient care.

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31.

The "multichannel ECG" indicates that
- You enter all the data into the machine prior to running a tracing
- Three or more leads are recorded at one time
- You do not have to mount each lead separately
- All of the above
Correct Answer

A. All of the above

Explanation

The correct answer is "All of the above." The term "multichannel ECG" implies that multiple leads are recorded simultaneously, which means that three or more leads are recorded at one time. Additionally, with a multichannel ECG, you enter all the data into the machine before running a tracing, eliminating the need to mount each lead separately. Therefore, all the given statements are true for a multichannel ECG.

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32.

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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33.

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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34.

Artifact filter helps obtain a clear ECG tracing by
- Reducing artifact or abnormal marks on the ECG tracing
- Always ensuring accurate readings by the computer
- Always recognizing that the patient has a pacemaker
- All of the above
Correct Answer

A. Reducing artifact or abnormal marks on the ECG tracing

Explanation

The artifact filter is a feature that helps to reduce any abnormal marks or interference on the ECG tracing. This ensures that the ECG readings obtained are clear and accurate. It does not specifically recognize if the patient has a pacemaker or not, but it helps to improve the overall quality of the ECG tracing by minimizing any unwanted artifacts. Therefore, the correct answer is "reducing artifact or abnormal marks on the ECG tracing".

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35.

computerized interpretation
- Can be used for actual diagnostic interpretation
- Never has to be validated by a physician
- Must always be validated by a physician
- None of the above
Correct Answer

A. Must always be validated by a physician

Explanation

Computerized interpretation must always be validated by a physician because although it can provide initial analysis and suggestions, it cannot replace the expertise and judgment of a trained medical professional. The interpretation provided by a computerized system may be based on algorithms and data, but it lacks the ability to consider the patient's unique medical history, symptoms, and other relevant factors. Therefore, it is crucial for a physician to review and validate the interpretation to ensure accurate diagnosis and appropriate treatment.

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36.

The horizontal reading on the ECG paper represents__________________, and the vertical readings represent__________
- Voltage, time
- Time, height
- Time, voltage
- Voltage, millivolts
Correct Answer

A. Time, voltage

Explanation

The horizontal reading on the ECG paper represents time, as it shows the progression of time during the recording of the heart's electrical activity. The vertical readings represent voltage, as they indicate the magnitude of the electrical signals produced by the heart.

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37.

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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38.

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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39.

five heavy lines or boxes
- 1 second
- 0.04 second
- 0.2 second
Correct Answer

A. 1 second

Explanation

The correct answer is 1 second. This suggests that it takes one second to perceive or process the information represented by the five heavy lines or boxes. This could indicate the time it takes for the brain to recognize and interpret the visual stimuli, or the time it takes for the individual to count or identify the objects accurately.

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0
40.

one vertical heavy line or box
- 0.2 second
- 0.04 second
- 1 second
Correct Answer

A. 0.2 second

Explanation

The correct answer is 0.2 seconds because it is the only option that is closest to the given time frame of one vertical heavy line or box. The other options, 0.04 seconds and 1 second, are either too short or too long compared to the given time frame.

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41.

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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42.

left leg (LL)
- Green
- White
- Black
- Red
Correct Answer

A. Red

Explanation

The correct answer is red because it is the last color mentioned in the list.

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43.

right arm (RA)
- Green
- White
- Black
- Red
Correct Answer

A. White

Explanation

The given answer, "white," is the correct answer because it is the only color mentioned that is associated with the term "right arm (RA)." The other colors listed (green, black, and red) do not have any direct connection to the term "right arm (RA)." Therefore, "white" is the most appropriate and relevant choice.

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44.

right leg (RL)
- Green
- White
- Black
- Red
Correct Answer

A. Green

Explanation

The given correct answer is "green". However, without any context or additional information, it is difficult to determine the specific reason for this answer. It is possible that "green" could be associated with the right leg (RL) in a certain context or system, but without further details, it is not possible to provide a definitive explanation.

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45.

Left arm
- Green
- White
- Black
- Red
Correct Answer

A. Black

Explanation

The given answer, black, is the only color mentioned in the list. The other colors mentioned, green, white, and red, do not match the given answer. Therefore, black is the correct answer.

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46.

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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47.

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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48.

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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49.

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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Current Version
Mar 22, 2023

Quiz Edited by
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Apr 09, 2011

Quiz Created by
Wkhuu1

Quiz About Your Heart! Know All About ECG

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

Quiz Preview

If you attempt to record an ECG and no tracing is seen, what should you do?

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

Name three augmented leads

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

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

A multichannel ECG monitors all 12 leads but usually records how many leads at one time?

What are some reasons that you may change the speed of the ECG tracing?

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

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

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

V1, V2, V3, V4, V5, V6

aVR, aVL, aVF

lead I, lead II, lead III

disposable sensors that receive the electrical activity of the heart

changes the size of the ECG tracing

data that is entered into an ECG machine

indicates time on the ECG tracing

conductor wire attached to the ECG machine

ability to record more than one lead tracing at a time

indicates voltage on the ECG tracing

displays the tracing for the electrical activity of the heart

amplifies the electrical impulse and converts to mechanical action

records one lead tracing at a time

controls the speed of the paper during an ECG tracing

ECG machines have three basic function. They are

To perform an ECG with accuracy, the best source to obtain specific information about the machine is

The type of electrodes most commonly used are____________and are used_________________

"Bipolar leads" means that

What is the purpose of the LCD display?

The "multichannel ECG" indicates that

What is the standard paper speed?

Which of the following is not a type of lead?

Artifact filter helps obtain a clear ECG tracing by

computerized interpretation

The horizontal reading on the ECG paper represents__________________, and the vertical readings represent__________

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

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

five heavy lines or boxes

one vertical heavy line or box

smallest ventical line or box

left leg (LL)

right arm (RA)

right leg (RL)

Left arm

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?

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?

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?

The type of electrodes most commonly used areand are used_____

The horizontal reading on the ECG paper represents________, and the vertical readings represent