FREC EKG 4th Practice Test Study Guide 2026 | Complete
Review | Graded A+
1. When performing a stress test on a pt, the technician notices ST elevation.
Signs of pulmonary embolism
Expected EKG changes as a result of running
Signs of acute myocardial injury
Expected EKG changes due to hypokalemia
2. If an EKG technician mistakenly places the V1 electrode on the left sternal
border for a patient with dextrocardia, what potential impact could this have
on the EKG results?
The EKG may show inaccurate heart rhythm and morphology.
The EKG will be unaffected and show normal results.
The EKG will only show changes in lead V1.
The EKG will only show a change in heart rate.
3. An EKG technician notes that the QRS complex is too tall to fit on the EKG
paper. Which of the following actions should the technician take?
Change the paper speed to 10 mm/second
Change the gain control to 5 mm/mV
Change the gain control to 20 mm/mV
Change the paper speed to 50 mm/second
4. For which of the following reasons should an EKG technician instruct a
patient to wear loose-fitting clothing while wearing a Holter monitor?
To minimize patient self-consciousness
, To increase the height of the waveforms
To increase the width of the waveforms
To reduce artifact on the tracing
5. Describe the significance of placing the ground electrode on the right lower
leg during telemetry monitoring.
The ground electrode is only necessary during emergency
procedures.
The ground electrode can be placed anywhere on the body without
affecting the readings.
The ground electrode is used to amplify the heart's electrical signals.
Placing the ground electrode on the right lower leg helps to reduce
electrical interference and ensures accurate EKG readings.
6. During an exercise stress test, if a technician mistakenly places Lead RA
instead of Lead RL on the right lower side, what potential impact could this
have on the test results?
It would only affect the patient's comfort.
It would have no impact on the test results.
It would improve the accuracy of the readings.
It could lead to inaccurate heart rhythm readings.
7. During a telemetry monitoring session, if an EKG technician mistakenly places
the ground electrode on the left upper arm instead of the right lower leg,
what potential issue could arise?
Inaccurate EKG readings due to electrical interference
No impact on the EKG results
, Increased patient comfort during the procedure
Improved signal quality and clarity
8. Which of the following statements made by an EKG technician correctly
prepares the patient for telemetry monitoring?
" I will clean your skin with an alcohol pad."
" A mild rash or skin redness should be expected around the
electrodes after 24 hours
"You may feel a slight warming sensation after the electrodes are
placed on the skin."
9. Why is it important for an EKG technician to notify a licensed practitioner
when observing ventricular tachycardia?
The technician's role is limited to monitoring and does not require
communication with practitioners.
Notifying a licensed practitioner is crucial for timely evaluation and
intervention to prevent potential complications.
The technician can manage the situation independently without further
assistance.
Ventricular tachycardia is not a serious condition and does not require
immediate action.
10. Describe the role of gain in EKG waveform interpretation and why it is
important.
Gain refers to the speed of the EKG paper, affecting the duration of
the waveforms.
Gain adjusts the height of EKG waveforms, allowing for clearer
interpretation of the heart's electrical activity.
, Gain is used to select the leads for monitoring heart rhythms.
Gain is a measure of patient safety during EKG procedures.
11. What symptom during an exercise stress test would indicate that the test
should be halted?
Stable blood pressure
Increased heart rate
Normal ECG readings
Dizziness
12. What is the primary purpose of a Holter monitor in cardiac care?
To continuously record the heart's electrical activity over a period
of time
To perform a one-time snapshot of the heart's rhythm
To provide immediate treatment for heart attacks
To measure blood pressure during exercise
13. Describe the significance of electrode placement for a patient with
dextrocardia during EKG procedures.
Electrode placement does not affect the EKG results.
Electrode placement must be adjusted to accurately reflect the
heart's orientation in dextrocardia.
Electrode placement is only important for lead V1.
Electrode placement is the same as for patients without heart
abnormalities.
Review | Graded A+
1. When performing a stress test on a pt, the technician notices ST elevation.
Signs of pulmonary embolism
Expected EKG changes as a result of running
Signs of acute myocardial injury
Expected EKG changes due to hypokalemia
2. If an EKG technician mistakenly places the V1 electrode on the left sternal
border for a patient with dextrocardia, what potential impact could this have
on the EKG results?
The EKG may show inaccurate heart rhythm and morphology.
The EKG will be unaffected and show normal results.
The EKG will only show changes in lead V1.
The EKG will only show a change in heart rate.
3. An EKG technician notes that the QRS complex is too tall to fit on the EKG
paper. Which of the following actions should the technician take?
Change the paper speed to 10 mm/second
Change the gain control to 5 mm/mV
Change the gain control to 20 mm/mV
Change the paper speed to 50 mm/second
4. For which of the following reasons should an EKG technician instruct a
patient to wear loose-fitting clothing while wearing a Holter monitor?
To minimize patient self-consciousness
, To increase the height of the waveforms
To increase the width of the waveforms
To reduce artifact on the tracing
5. Describe the significance of placing the ground electrode on the right lower
leg during telemetry monitoring.
The ground electrode is only necessary during emergency
procedures.
The ground electrode can be placed anywhere on the body without
affecting the readings.
The ground electrode is used to amplify the heart's electrical signals.
Placing the ground electrode on the right lower leg helps to reduce
electrical interference and ensures accurate EKG readings.
6. During an exercise stress test, if a technician mistakenly places Lead RA
instead of Lead RL on the right lower side, what potential impact could this
have on the test results?
It would only affect the patient's comfort.
It would have no impact on the test results.
It would improve the accuracy of the readings.
It could lead to inaccurate heart rhythm readings.
7. During a telemetry monitoring session, if an EKG technician mistakenly places
the ground electrode on the left upper arm instead of the right lower leg,
what potential issue could arise?
Inaccurate EKG readings due to electrical interference
No impact on the EKG results
, Increased patient comfort during the procedure
Improved signal quality and clarity
8. Which of the following statements made by an EKG technician correctly
prepares the patient for telemetry monitoring?
" I will clean your skin with an alcohol pad."
" A mild rash or skin redness should be expected around the
electrodes after 24 hours
"You may feel a slight warming sensation after the electrodes are
placed on the skin."
9. Why is it important for an EKG technician to notify a licensed practitioner
when observing ventricular tachycardia?
The technician's role is limited to monitoring and does not require
communication with practitioners.
Notifying a licensed practitioner is crucial for timely evaluation and
intervention to prevent potential complications.
The technician can manage the situation independently without further
assistance.
Ventricular tachycardia is not a serious condition and does not require
immediate action.
10. Describe the role of gain in EKG waveform interpretation and why it is
important.
Gain refers to the speed of the EKG paper, affecting the duration of
the waveforms.
Gain adjusts the height of EKG waveforms, allowing for clearer
interpretation of the heart's electrical activity.
, Gain is used to select the leads for monitoring heart rhythms.
Gain is a measure of patient safety during EKG procedures.
11. What symptom during an exercise stress test would indicate that the test
should be halted?
Stable blood pressure
Increased heart rate
Normal ECG readings
Dizziness
12. What is the primary purpose of a Holter monitor in cardiac care?
To continuously record the heart's electrical activity over a period
of time
To perform a one-time snapshot of the heart's rhythm
To provide immediate treatment for heart attacks
To measure blood pressure during exercise
13. Describe the significance of electrode placement for a patient with
dextrocardia during EKG procedures.
Electrode placement does not affect the EKG results.
Electrode placement must be adjusted to accurately reflect the
heart's orientation in dextrocardia.
Electrode placement is only important for lead V1.
Electrode placement is the same as for patients without heart
abnormalities.
