EKG Set Up And Leads
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 aboveExplanation
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.Rate this question:
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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 treatmentExplanation
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.Rate this question:
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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 waveExplanation
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.Rate this question:
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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 waveExplanation
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).Rate this question:
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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 waveExplanation
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.Rate this question:
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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 waveExplanation
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.Rate this question:
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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 waveExplanation
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.Rate this question:
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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 waveExplanation
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.Rate this question:
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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 waveExplanation
The QT interval is the distance between the beginning of the QRS wave and the end of the T wave.Rate this question:
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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 waveExplanation
The ST segment is the distance between the end of the QRS complex and the beginning of the T wave on an electrocardiogram (ECG).Rate this question:
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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 pulseExplanation
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.Rate this question:
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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 , 0.1Explanation
Each vertical square on the graph paper represents voltage and is measured in 0.1 mV.Rate this question:
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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 , 0.04Explanation
Each horizontal small block represents a unit of time, and each block represents 0.04 seconds.Rate this question:
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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 deflectionExplanation
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.Rate this question:
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- 15.
Wave heights are also known as?
- A.
Peaks
- B.
Amplitudes
- C.
Interval widths
Correct Answer
B. AmplitudesExplanation
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.Rate this question:
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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/secExplanation
The correct answer is 25 mm/sec. This is because paper generally runs through the machine at a speed of 25 mm/sec.Rate this question:
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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/secExplanation
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.Rate this question:
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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 surfaceExplanation
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.Rate this question:
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- 19.
How many bipolar leads are there?
- A.
2
- B.
3
- C.
4
- D.
5
- E.
6
Correct Answer
B. 3Explanation
There are three bipolar leads.Rate this question:
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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 leadsExplanation
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.Rate this question:
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- 21.
There are _____ unipolar leads.
- A.
6
- B.
7
- C.
8
- D.
9
- E.
12
Correct Answer
D. 9Explanation
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.Rate this question:
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- 22.
The unipolar lead that is recorded from the right arm is _____?
Correct Answer
AVR
avrExplanation
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.Rate this question:
- 23.
The unipolar lead that is recorded from the left arm is the ____?
Correct Answer
AVL
avlExplanation
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.Rate this question:
- 24.
The unipolar lead that is recorded form the left foot is _____?
Correct Answer
AVF
avfExplanation
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.Rate this question:
- 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 redExplanation
The correct color combination of the limb leads is RA white, LA black, RL green, and LL red.Rate this question:
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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. TrueExplanation
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.Rate this question:
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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. FalseExplanation
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.Rate this question:
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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 purpleExplanation
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.Rate this 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. TrueExplanation
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.Rate this question:
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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. FalseExplanation
V4 is the electrode that is placed under the breast.Rate this question:
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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 buttocksExplanation
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.Rate this question:
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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 leadsExplanation
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.Rate this question:
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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 interferenceExplanation
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.Rate this question:
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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 baselineExplanation
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.Rate this question:
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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 interferenceExplanation
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.Rate this question:
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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 tremorExplanation
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.Rate this question:
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Mar 21, 2023Quiz Edited by
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May 06, 2010Quiz Created by
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