WorksheetsEKG Chp 5 and Chp 6
Total questions: 94
Worksheet time: 47mins
Depolarization in the context of heart function is the process that changes the cell membrane potential to initiate contraction.
It is the process where heart muscle repolarizes after contraction.
It is the process that leads to the loss of electrical potential causing heart muscle contraction.
It is the process that changes the cell membrane potential to initiate contraction.
It is the process in which the heart inhibits electrical impulses.
Repolarization in the context of heart function refers to the restoration of the heart's resting membrane potential following a contraction.
The restoration of the heart's resting membrane potential following a contraction.
The contraction phase of the heart muscle.
The process of the heart filling with blood.
The acceleration of heart rate during physical activity.
Electrodes in EKG technology are sensors that detect the heart's electrical activity.
Sensors that detect the heart's electrical activity
Devices used for measuring blood pressure
Instruments for monitoring respiratory activity
None of the above
In EKG technology, lead wires are conductive cables that connect electrodes to the EKG machine.
Conductive cables that connect electrodes to the EKG machine.
Non-functional decorative cables.
High voltage power cables used for energy supply.
Software interfaces that manage signal processing.
What are leads in an EKG?
Graphical representations of the heart's electrical activity
Electrodes that record the electrical signals of the heart
The frequency of the heartbeats
Artifacts in the EKG recording
An EKG tracing is a record of the electrical activity of the heart.
A tracing of the electrical activity of the heart.
A test for lung capacity.
A measurement of liver enzymes.
A scan of brain activity.
Echocardiogram is a diagnostic test that uses ultrasound to capture images of the heart.
A diagnostic test that uses ultrasound to capture images of the heart
A procedure that uses x-rays to examine the heart
A blood test to check for heart conditions
A surgical procedure to repair the heart
Voltage in the context of EKG technology refers to a measurement of electrical potential difference across the heart, typically recorded in millivolts.
It is the measurement of electrical potential difference across the heart, typically recorded in millivolts.
It is the measurement of the heart rate per minute.
It indicates the duration of the QRS complex.
It represents the interval between heartbeats.
Telemetry in EKG technology is the remote monitoring and transmission of heart signals.
It is the remote monitoring and transmission of heart signals.
It is the direct interpretation of heart signals on-site.
It refers to the manual measurement of heart signals.
It is the simultaneous monitoring of heart signals and blood pressure.
Ambulatory monitoring in EKG technology is a technique that records EKG signals continuously over an extended period while the patient is ambulatory.
It records EKG signals continuously while the patient performs daily activities.
It captures EKG signals only during short, stationary tests.
It is an invasive procedure monitoring brain activity.
It relies solely on manual pulse measurement.
A Holter monitor is a portable device for continuously monitoring the electrical activity of the heart.
A portable device for continuously monitoring the electrical activity of the heart.
A device for measuring blood pressure.
A device that checks lung function.
A device used to capture images of the heart.
Mobile cardiac telemetry is a continuous and real-time monitoring method using a wearable device that records cardiac electrical activity.
It is a continuous and real-time monitoring method using a wearable device that records cardiac electrical activity.
It is a standard 12-lead ECG performed in hospitals.
It is a test used to diagnose respiratory conditions.
It is an invasive procedure for monitoring heart function.
A 12-lead EKG is a diagnostic tool used to measure the electrical activity of the heart.
It is a diagnostic tool used to measure the electrical activity of the heart.
It is a system that monitors lung function.
It is a device that detects blood pressure levels.
It is an imaging technique primarily used for evaluating brain activity.
A stress test in the context of EKG is used as a diagnostic tool to evaluate the electrical activity of the heart before, during, and after physical exertion.
A diagnostic tool to evaluate the electrical activity of the heart during physical exertion.
A procedure to measure brain activity during exercise.
A test exclusively used for measuring lung capacity.
A technique to test muscular strength.
A rhythm strip in electrocardiography is a short, continuous recording of a single lead displaying the heart's rhythm.
A short, continuous recording of a single lead displaying the heart's rhythm.
A recording of multiple leads used to diagnose heart attacks.
A procedure to measure blood pressure.
An imaging technique used for visualizing the structure of the heart.
Limb leads in electrocardiography are the electrodes placed on the limbs to record the heart's electrical activity. Which of the following best describes limb leads?
Electrodes placed on the limbs to record the heart's electrical activity.
Electrodes placed on the chest to measure heart signals.
Electrodes placed on the back to monitor heart function.
Electrodes placed on the neck to detect cardiac activity.
Einthoven's triangle is the arrangement of three limb leads used in a standard electrocardiogram to analyze the heart's electrical activity.
A diagram illustrating the configuration of three limb leads in an ECG
A geometric figure used in art
A type of electrical circuit
A formula for calculating heart rate
Bipolar leads in electrocardiography are those that record the electrical activity of the heart using the potential difference between two electrodes.
They record the electrical activity using the potential difference between two electrodes.
They record the electrical activity using a single unipolar electrode.
They record the electrical activity using multiple electrodes simultaneously.
They do not record electrical activity at all.
Augmented limb leads in electrocardiography are unipolar leads derived by combining signals from two limb electrodes to form an augmented reference voltage.
They are unipolar leads derived by combining signals from two limb electrodes to form an augmented reference voltage.
They are bipolar leads recording electrical differences between two electrodes.
They are unipolar leads recorded exclusively from the left arm.
They are bipolar leads recorded exclusively from the right arm.
Unipolar leads in electrocardiography are electrocardiographic leads that record electrical activity from a single exploring electrode compared to a reference point.
Electrocardiographic leads that record electrical potential from a single exploring electrode compared to a reference point
Bipolar leads that compare signals between two electrodes
A type of lead that uses three electrodes
Leads that measure the heart's mechanical activity
Identify the precordial leads used in electrocardiography.
V1 - V6
I - VI
aVR, aVL, aVF
V1, V2, V3
Wilson's central terminal is the reference point for unipolar lead measurements in electrocardiology.
It is the reference point for unipolar lead measurements.
It is a specific point in the heart's conduction system.
It refers to an electrode placement technique used in ECGs.
It is a method to measure the cardiac cycle.
An artifact in electrocardiography is a signal distortion caused by external interference or technical error.
A signal distortion caused by external interference or technical error
An abnormality in the cardiac rhythm
A normal component of the ECG waveform
A malfunction of the heart muscle
Gain control on an EKG machine adjusts the amplitude of the electrical signal recorded during an EKG.
It adjusts the amplitude of the EKG signal.
It controls the heart rate display.
It filters out noise from the signal.
It calibrates the machine's time base.
A stylus in the context of an EKG machine is:
A pen-like instrument that records the electrical signals on paper
A device used to amplify heart signals
A sensor that measures heart rate variability
A mechanism that controls the speed of the EKG paper
The standard gain setting on an EKG machine is:
5 mm/mV
10 mm/mV
20 mm/mV
50 mm/mV
When cells in the heart repolarize, the electrical charge
Becomes neutral
Changes from negative to positive
Changes from positive to negative
Is destabilized
What transmits signals from the patient’s body to the EKG machine?
Electrodes and lead wires
A handheld device that emits sound waves
An X-ray camera
A device that creates a magnetic field.
Normal cardiac conduction begins
In the ventricles
In the middle of the heart
In the upper part of the heart
In the aorta
The term voltage relates to differences in
The force of heartbeats
Electrical charge
The speed of paper through an EKG machine
The amount of blood flowing through the heart’s chambers.
What type of electrodes may be used for a resting EKG if resting electrodes do not adhere well to the patient’s skin (e.g., due to diaphoresis)?
Suction bulb electrodes
Clamp electrodes
Monitoring electrodes
Triangular electrodes
If the gel in an electrode has dried out, the electrode may not _______________ correctly.
Stick
Open
Attach to the lead wire
Conduct electricity.
In which situation is an ambulatory monitor most often used?
When a patient is in the hospital
When a patient is in a cardiac rehabilitation program
When a patient is being screened as part of a routine physical
When a patient reports cardiac symptoms that a provider wants to monitor over an extended time.
How is a patient’s EKG monitored during telemetry?
A healthcare worker is assigned to stay by the patient’s bedside.
The patient pushes a button when he has symptoms.
Healthcare workers monitor several patients’ EKGs at a central monitoring station.
A printout is created every 15 minutes for a provider to review.
Which of the following is true of stress testing for a patient who is not able to exercise?
Stress testing cannot be conducted.
Stress is created by describing anxiety-creating situations to the patient.
Stress is created by injecting a radioactive dye.
Stress is created with medications.
In a 12-lead EKG, how often does the tracing change from one lead to the next?
Every 2.5 seconds
Every 5 seconds
Every 10 seconds
Every 12 seconds
Points with opposite electrical charges are called
Opposite ends
Poles
Fields
Terminals
The chest leads may also be called the _______________ leads.
Bipolar leads
Augmented limb leads
Precordial leads
Einthoven
Why is it useful to a provider to see the different leads recorded on an EKG?
Because if one lead records incorrectly, the other leads can make up for it
Because each lead provides information about a different body system
Because each lead provides information about a different part of cardiac activity (heart rate, heart rhythm, pulse volume, etc.)
Because each lead provides information about a different area of the heart.
What happens if an EKG technician places the left arm electrode on the patient's right side and the right arm electrode on the patient's left side?
It is called limb lead reversal; it causes the EKG to be incorrect.
It is called limb lead reversal; it does not change the EKG in a significant way.
It may produce an electrical shock to the patient.
It may create an electrical surge that damages the EKG machine.
Which of the chest electrodes is used in 5-lead EKG testing?
LL
V1
V3
V6
Which of the following is an acceptable location for the ground electrode?
The left ankle
The right ankle
The left lower torso
The fourth intercostal space just to the right of the sternum.
How does gain control change the appearance of an EKG tracing?
Higher settings make higher marks on the paper.
Higher settings make lower marks on the paper.
Higher settings make the paper move more quickly and spread out the tracings.
Higher settings make the paper move more slowly and squeeze the tracings together.
A provider wants to get a more detailed look at the heart rhythm of a patient with a very fast tachycardia. Which of the following settings would be most helpful?
Setting the paper speed to 10 mm/s
Setting the paper speed to 25 mm/s
Setting the paper speed to 50 mm/s
Setting the gain control to 20 mm/mV.
The vertical rectangle with the bottom missing that appears at the beginning of an EKG tracing is called the
Calibration mark
Settings gauge
Default check
Initial rectangle
The pads applied to a patient's skin for an EKG are called
Electrodes
Leads
Lead wires
Monitors
Which cardiac test may be ordered to get information about the mechanical function of the heart?
Electrocardiogram
Stress test
Chest X-ray
Echocardiogram
What feature of electrodes allows electrical signals to be transmitted from the pad to the lead wire?
The shape of the pad
A conductive gel in the pad
The adhesive on the pad
The paper backing on the pad.
A portable EKG machine typically includes a screen, keyboard, printer, and cable that branches into ____ lead wires.
3
5
10
12
Which of the following is a common type of ambulatory monitor?
Holter monitor
12-lead EKG
Stress test
Continuous monitor
What type of EKG is typically performed during the course of a stress test?
3-lead continuous monitoring
5-lead EKG
Holter monitoring
12-lead EKG
The 12-second tracing of lead II at the bottom of an EKG tracing is also known as
A telemetry strip
A diagnostic strip
A rhythm strip
Einthoven's strip
Lead ____ is the lead most commonly used to examine a patient's heart rate and rhythm.
I
II
III
aVF
Together leads V1, V2, V3, V4, V5, and V6 may be called the
Chest leads
Augmented limb leads
Bipolar leads
Limb leads
Which two phrases refer to the same set of leads?
Precordial leads, augmented limb leads
Unipolar leads, limb leads
Limb leads, bipolar leads
Neutral leads, chest leads
The augmented limb leads are
A1, A2, and A3
V1, V2, V3, V4, V5, and V6
aI, aII, and aIII
aVR, aVL, and aVF
Where are the three leads for continuous monitoring usually placed?
Right upper torso, left upper torso, and right lower torso
Right upper torso, left upper torso, and left lower torso
Right lower torso, left lower torso, and left upper leg
Right upper leg, left upper leg, and right lower torso.
How many electrodes are required for a 12-lead EKG test?
5
8
10
12
Limb lead reversal is one of the most common errors in electrocardiography. Which two leads are reversed to cause this error?
LA and LL
RA and LA
RL and LL
RA and RL
Distortion that can generate inaccurate EKG tracings is known as
Interference
Interruption
Error
Artifact
Why should an EKG machine be placed near the patient?
So the patient can see the readout on the screen
To allow the patient to type in her name and other details
Because the machine cannot read signals from farther away
Because tension in the lead wires can distort the EKG tracing
When an EKG is set to default paper speed, how many one-millimeter blocks on the tracing represent one second of cardiac activity?
10
20
25
50
What is the effect of increasing the speed at which EKG paper passes through the machine?
It makes the features on the tracing more densely packed together.
It makes the features on the tracing more spread out.
It makes the features on the tracing taller.
It makes the features on the tracing shorter.
At standard gain, how high is the calibration mark on an EKG tracing?
5 mm
10 mm
15 mm
25 mm
Which two identifiers are typically used to establish a patient's identity?
First and last names
Last name and month/day of birth
Hospital room number and full name
Full name and complete date of birth
What PPE should an EKG technician wear when applying electrodes on a patient with broken skin?
Gloves
Gloves and mask
Gloves, mask, and goggles
Gloves, mask, goggles, and gown
Before performing a 12-lead EKG the technician should inform patients that the test
is noninvasive and painless
Is ordered when a doctor is worried about the patient's heart
Usually does not hurt
Might need to be repeated if the patient does not follow directions
Which of the following is true of how EKG technicians should approach pediatric patients?
They should be treated just as adult patients are treated.
They should use "baby talk" with pediatric patients.
They should use language that matches the age of the patient.
They should finish the test as quickly as possible and avoid discussion.
After a clear EKG tracing has been achieved, what should the technician check for before proceeding?
Any sign of dysrhythmia
The battery level of the EKG machine
Artifact
Lethal dysrhythmias and any ST segment abnormality
When a patient is wearing a telemetry pack
He must remain in a hospital bed at all times
He must press a button every time he experiences cardiac symptoms
He must phone the monitoring station any time he experiences cardiac symptoms
He can continue normal activity
What should an EKG technician always do before applying a telemetry pack to a patient?
Alert the monitoring station
Check the batteries
Inform the patient that he will not be able to move about freely while wearing the pack
Call the patient's doctor to confirm that the pack should be applied
Standard instructions for a stress test include not eating or drinking anything except for water for three hours before the test. Patients with __________ should consult their doctors as instructions may be different for them.
Coronary artery disease
A history of heart attack
Asthma
Diabetes
What is often done when a stress test is ordered for a patient who is unable to walk on a treadmill or use a stationary bicycle?
The test is postponed until the patient's condition allows for exercise.
An echocardiogram is performed instead.
Stress is created with stimulant medications.
Stress is created by administering mild electric shocks.
In order for a stress test on a 56-year-old patient to be valid, his heart rate must reach approximately
120 BPM
130 BPM
140 BPM
150 BPM
What is one simple way for an EKG technician to reduce tugging on electrodes when setting up ambulatory monitoring?
Suggesting that the patient wear a loose shirt made of slippery material
Creating stress loops in the lead wires
Asking the patient to remove lead wires from the electrodes before any kind of intense activity
Requesting that the patient limit movement in the upper body during monitoring
Which form of exercise is not allowed during Holter monitoring?
Swimming
Jogging
Yoga
Weight lifting
EHR is an abbreviation for
Extrinsic heart rhythm
Electronic heart review
Exceptional health recommendations
Electronic health records
Which federal legislation relates to management of patient's protected health information?
The Bloodborne Pathogens Standard and the Occupational Safety and Health Act
The Health Insurance Portability and Accountability Act and the Health Information Technology for Economic and Clinical Health Act
The Affordable Care Act and the Bloodborne Pathogens Standard
The Clinical Laboratory Improvement Amendments and the Human Subjects Research Protections
Why should a patient's room number not be used as a form of identification?
Because room number is confidential
Because a patient's room number may change
Because a patient may not remember his room number
Because there are laws that do not allow room number to be used
How should an EKG technician explain EKG testing to a patient whose language the technician does not speak or understand?
She should speak in English very slowly and use gestures.
She should ask the patient if she has a family member or friend at the facility who can translate.
She should draw pictures for the patient.
She should use an interpreter or interpretation service.
Who must be identified before an EKG is performed?
The technician must identify herself by name and title and identify the patient.
The technician must identify the patient only.
The technician must identify herself, the patient, and any other healthcare worker in the room.
The technician must identify herself, the patient, and the provider who ordered the test.
Which of the following is a reason why EKG technicians should observe the patient's skin before placing electrodes?
Because different electrodes are used based on skin type
Because moisture, dryness, oil, dirt, and body hair can affect electrode contact
Because EKGs cannot be conducted if the patient has broken skin on the chest
Because EKGs cannot be conducted if the patient has a pacemaker scar
If a child is anxious about an EKG and has many questions about the machine, the best response from the EKG technician is to
Answer questions within his scope of practice, using language suited to the age of the child
Call the provider in to calm the child down
Tell the parent/guardian to calm the child and then leave the room, asking to be informed when the child is ready
Get the test over with as quickly as possible
What may need to be done in order for electrodes to adhere properly to the chest of a male patient with chest hair?
The patient's skin may need to be abraded.
The patient's chest hair may need to be shaved.
The patient may need to lie facedown to place more pressure on the electrodes.
The patient may need to have electrodes placed on his back rather than on his chest.
When is it not necessary to ask a patient to remove socks or stockings before a 12-lead EKG?
When the RL and LL electrodes will be placed on the arms instead
When the RL electrodes will not be used at all
When the RL and LL electrodes will be placed on the upper torso
When the RL and LL electrodes will be placed on the lower torso
What might an EKG technician ask a patient to remove?
The paper backing on electrodes before an EKG
The lead wires from the electrodes after an EKG
The electrodes from her body after an EKG
The completed EKG tracing from the EKG machine
Before printing an EKG, the technician should be sure that it
Can be read clearly
Shows no abnormalities
Has a rate between 60–100 BPM
Does not show a lethal dysrhythmia or ST segment elevation
Which of the following is true about telemetry?
If a patient being monitored by telemetry needs to use the bathroom, he will need to ask the nurse to disconnect the unit.
Telemetry is another word for ambulatory monitoring.
Telemetry is generally performed in an outpatient setting.
The telemetry unit is usually in a pouch or pocket and the patient is able to move around.
What kind of supplies does a crash cart hold?
Supplies for conducting EKGs
Supplies for responding to an automobile accident
Supplies for responding to a medical emergency
Supplies for cleaning spills in a healthcare facility
Patient preparation for a stress test usually involves telling the patient the entire procedure will take
20–30 minutes
45–60 minutes
1–2 hours
2–4 hours
During a stress test, a patient’s heart rate never goes above 120 BPM. What should happen?
The EKG technician should give the patient a drug to speed up the heart rate.
The test should be stopped.
The patient should be allowed to rest and then encouraged to go faster.
The patient should be taken to the emergency department.
Which of the following is true of ambulatory monitoring?
It is done over a period of several hours.
A patient is admitted to a hospital while it is performed.
Patients should not exercise while it is performed.
It is used to evaluate cardiac activity over a full day or longer.
At facilities that use EHR systems, each worker will have
An assigned laptop to use at work
An assigned workstation for entering patient information
A username and password
A barcode on her badge that can be scanned before entering information in the system
To which employees at a healthcare facility do laws about protecting patients’ private information apply?
To all employees in all circumstances
To all employees who intentionally break confidentiality
To administrators at the facility
To supervisors at the facility
