NHA EKG PRACTICE EXAM 2026 FINAL
PAPER 3 PRACTICE EXAMS 300
QUESTIONS WITH ACCURATE ANSWERS
AND DETAILED RATIONALES
⩥ A patient presents alert and oriented, but an EKG technician finds that
all the waveforms are negative in Lead I. The technician should check
the cable connections for which the following limb electrodes? Answer:
Right arm and left arm
⩥ An EKG tech detects U waves and the patient reports chest pain and
discomfort. What is the appropriate action? Answer: Notify the patient's
physician
⩥ An EKG is showing a rhythm that the Tech is not familiar with. What
should they do next? Answer: verify proper lead placement
⩥ Which of the following is the correct sensitivity setting to create an
EKG standardization mark of 5 mm? Answer: 1/2
⩥ Which activity should the EKG tech tell a patient to record in his
Holter monitor daily? Answer: Running
,⩥ The EKG tech is educating a patient on when she should push the
event button while wearing a Holter monitor. What shows that she
understands? Answer: "I will push the event button if I'm experiencing
discomfort."
⩥ Which is the only calculating method that available for both regular &
irregular rhythms? Answer: Six-Second method
⩥ During a stress test, an EKG tech notices the patient appears to be
hyperventilating. What is the best action? Answer: Check the patient's
respiratory rate
⩥ Which of the following sensitivity settings would produce a
calibration box that measures 10 mm tall? Answer: 1
⩥ Which of the following methods for calculating a patient's heart rate
from the EKG is correct? Answer: Divide 1,500 by the number of small
boxes between two R waves
⩥ What is the correct order of a complete cardiac cycle in the normal
heart? Answer: P wave, QRS complex, and T wave
⩥ While performing a stress test, the patient complains of dizziness.
After stopping the test, which of the following actions should the CET
take first? Answer: Notify the physician
, ⩥ Which of the following describes the correct electrode placement for
lead V5? Answer: Anterior axillary line, 5th intercostal space
⩥ The R-R interval on a patient's tracing has five large boxes. Which of
the following is the patient's heart rate? Answer: 60 bpm (This rate is
calculated using the 300 method, in which 300 is divided by the number
of large boxes. 300/5=60
⩥ Where should the EKG technician place the electrode for lead V5?
Answer: On the left anterior axillary line, horizontal to V4
⩥ Which of the following waves would an EKG technician measure to
evaluate for atrial enlargement? Answer: P wave
⩥ Which of the following lead groups are bipolar leads? Answer: I,II,III
⩥ An EKG technician is working with a patient who has a below-the-
knee amputation of the left leg. Where should the technician place the
right-leg electrode? Answer: On the lower right thigh
⩥ When performing a posterior EKG, which of the following is the
correct location for placement of lead V8? Answer: Left midscapular
line
PAPER 3 PRACTICE EXAMS 300
QUESTIONS WITH ACCURATE ANSWERS
AND DETAILED RATIONALES
⩥ A patient presents alert and oriented, but an EKG technician finds that
all the waveforms are negative in Lead I. The technician should check
the cable connections for which the following limb electrodes? Answer:
Right arm and left arm
⩥ An EKG tech detects U waves and the patient reports chest pain and
discomfort. What is the appropriate action? Answer: Notify the patient's
physician
⩥ An EKG is showing a rhythm that the Tech is not familiar with. What
should they do next? Answer: verify proper lead placement
⩥ Which of the following is the correct sensitivity setting to create an
EKG standardization mark of 5 mm? Answer: 1/2
⩥ Which activity should the EKG tech tell a patient to record in his
Holter monitor daily? Answer: Running
,⩥ The EKG tech is educating a patient on when she should push the
event button while wearing a Holter monitor. What shows that she
understands? Answer: "I will push the event button if I'm experiencing
discomfort."
⩥ Which is the only calculating method that available for both regular &
irregular rhythms? Answer: Six-Second method
⩥ During a stress test, an EKG tech notices the patient appears to be
hyperventilating. What is the best action? Answer: Check the patient's
respiratory rate
⩥ Which of the following sensitivity settings would produce a
calibration box that measures 10 mm tall? Answer: 1
⩥ Which of the following methods for calculating a patient's heart rate
from the EKG is correct? Answer: Divide 1,500 by the number of small
boxes between two R waves
⩥ What is the correct order of a complete cardiac cycle in the normal
heart? Answer: P wave, QRS complex, and T wave
⩥ While performing a stress test, the patient complains of dizziness.
After stopping the test, which of the following actions should the CET
take first? Answer: Notify the physician
, ⩥ Which of the following describes the correct electrode placement for
lead V5? Answer: Anterior axillary line, 5th intercostal space
⩥ The R-R interval on a patient's tracing has five large boxes. Which of
the following is the patient's heart rate? Answer: 60 bpm (This rate is
calculated using the 300 method, in which 300 is divided by the number
of large boxes. 300/5=60
⩥ Where should the EKG technician place the electrode for lead V5?
Answer: On the left anterior axillary line, horizontal to V4
⩥ Which of the following waves would an EKG technician measure to
evaluate for atrial enlargement? Answer: P wave
⩥ Which of the following lead groups are bipolar leads? Answer: I,II,III
⩥ An EKG technician is working with a patient who has a below-the-
knee amputation of the left leg. Where should the technician place the
right-leg electrode? Answer: On the lower right thigh
⩥ When performing a posterior EKG, which of the following is the
correct location for placement of lead V8? Answer: Left midscapular
line
