NHA EKG PRACTICE EXAM 2026
COMPREHENSIVE STUDY GUIDE 3
PRACTICE EXAMS 300 QUESTIONS WITH
DETAILED ANSWERS AND RATIONALES
⩥ Which of the following methods should a EKG technician use when
removing hair from electrode placement sites for telemetry monitoring?
a. Dry shave
b. Wet shave
c. Tape
d. Clippers. Answer: d. Clippers
⩥ An EKG technician notes periods of sinus arrest on a patient's EKG
tracing. The technician should consider the sinus arrest to be a medical
emergency when the arrest reaches which of the following durations?
a. 6 sec
b. 4 sec
c. 3 sec
d. 1 sec. Answer: a. 6 sec
⩥ Which of the following lead groups are bipolar leads?
a. Leads aVR, aVL, and aVF
,b. Leads I, II, and III
c. Leads V1, V2, and V3
d. Leads V4, V5, and V6. Answer: b. Leads I, II, III
⩥ An EKG technician is performing a second standard 12-lead EKG on
a patient immediately following the first test. For which of the following
reasons should the technician recognize that resting tab electrodes
should not be used for more than two consecutive EKG tracings?
a. The electrodes cannot conduct the signal after two EKG tracings
b. The electrodes will not conduct accurately after two EKG tracings
c. The electrodes need to be cleaned after two EKG tracings
d. The electrodes will not re-adhere to the skin after being removed
between tracings. Answer: b. The electrodes will not conduct accurately
after two EKG tracings
⩥ In which of the following locations should an EKG technician place
the electrode for leavd V5?
a. On the left midaxillary line, horizontal to lead V4
b. On the left anterior axillary line, horizontal to lead V4
c. On the left midclavicular line, fifth intercostal space
d. On the right margin of the sternum, fourth intercostal space. Answer:
b. On the left anterior axillary line, horizontal to lead V4
,⩥ An EKG technician is working with a patient who has a below-the-
knee amputation of the left leg. In which of the following locations
should the technician place the right leg electrode?
a. On the lower right foot
b. On the lower right abdomen
c. On the lower left torso
d. On the lower right leg. Answer: b. On the lower right abdomen
⩥ Which of the following methods should an EKG technician use to
store electrodes when not in use?
a. Loose in the EKG cart
b. In a folded paper bag
c. In an open plastic bag
d. In the original, foil-lined packaging. Answer: d. In the original, foil-
lined packaging
⩥ A serial EKG tracing shows a rhythm that does not match the last
tracing that the EKG technician performed. Which of the following
actions should the technician take first?
a. Connect the patient to a different EKG machine.
b. Report the finding to the provider
c. Verify proper lead placement
d. Perform a maintenance check on the machine. Answer: c. Verify
proper lead placement
, ⩥ Which of the following statements made by an EKG technician
correctly prepares the patient for telemetry monitoring?
a. "I will clean your skin with an alcohol pad"
b. "You may feel a slight warming sensation after the electrodes are
placed on the skin"
c. "A mild rash or skin redness should be expected around the electrodes
after 24 hours."
d. "Electrodes will be replaced once per week while you're in the
hospital.". Answer: a. "I will clean your skin with an alcohol pad"
⩥ An EKG technician is performing a standard 12-lead EKG on a
patient who is 4 years old. In which of the following locations should the
technician place the V6 electrodes?
a. Right midclavicular space
b. Left midclavicular space
c. Right midaxillary line
d. Left midaxillary line. Answer: d. Left midaxillary line
⩥ Which of the following sections of the EKG tracing should an EKG
technician use to measure the QRS complex?
a. End of the Q wave to the beginning of the S wave
b. Beginning of the Q wave to the beginning of the S wave
c. End of the Q wave to the beginning of the T wave
COMPREHENSIVE STUDY GUIDE 3
PRACTICE EXAMS 300 QUESTIONS WITH
DETAILED ANSWERS AND RATIONALES
⩥ Which of the following methods should a EKG technician use when
removing hair from electrode placement sites for telemetry monitoring?
a. Dry shave
b. Wet shave
c. Tape
d. Clippers. Answer: d. Clippers
⩥ An EKG technician notes periods of sinus arrest on a patient's EKG
tracing. The technician should consider the sinus arrest to be a medical
emergency when the arrest reaches which of the following durations?
a. 6 sec
b. 4 sec
c. 3 sec
d. 1 sec. Answer: a. 6 sec
⩥ Which of the following lead groups are bipolar leads?
a. Leads aVR, aVL, and aVF
,b. Leads I, II, and III
c. Leads V1, V2, and V3
d. Leads V4, V5, and V6. Answer: b. Leads I, II, III
⩥ An EKG technician is performing a second standard 12-lead EKG on
a patient immediately following the first test. For which of the following
reasons should the technician recognize that resting tab electrodes
should not be used for more than two consecutive EKG tracings?
a. The electrodes cannot conduct the signal after two EKG tracings
b. The electrodes will not conduct accurately after two EKG tracings
c. The electrodes need to be cleaned after two EKG tracings
d. The electrodes will not re-adhere to the skin after being removed
between tracings. Answer: b. The electrodes will not conduct accurately
after two EKG tracings
⩥ In which of the following locations should an EKG technician place
the electrode for leavd V5?
a. On the left midaxillary line, horizontal to lead V4
b. On the left anterior axillary line, horizontal to lead V4
c. On the left midclavicular line, fifth intercostal space
d. On the right margin of the sternum, fourth intercostal space. Answer:
b. On the left anterior axillary line, horizontal to lead V4
,⩥ An EKG technician is working with a patient who has a below-the-
knee amputation of the left leg. In which of the following locations
should the technician place the right leg electrode?
a. On the lower right foot
b. On the lower right abdomen
c. On the lower left torso
d. On the lower right leg. Answer: b. On the lower right abdomen
⩥ Which of the following methods should an EKG technician use to
store electrodes when not in use?
a. Loose in the EKG cart
b. In a folded paper bag
c. In an open plastic bag
d. In the original, foil-lined packaging. Answer: d. In the original, foil-
lined packaging
⩥ A serial EKG tracing shows a rhythm that does not match the last
tracing that the EKG technician performed. Which of the following
actions should the technician take first?
a. Connect the patient to a different EKG machine.
b. Report the finding to the provider
c. Verify proper lead placement
d. Perform a maintenance check on the machine. Answer: c. Verify
proper lead placement
, ⩥ Which of the following statements made by an EKG technician
correctly prepares the patient for telemetry monitoring?
a. "I will clean your skin with an alcohol pad"
b. "You may feel a slight warming sensation after the electrodes are
placed on the skin"
c. "A mild rash or skin redness should be expected around the electrodes
after 24 hours."
d. "Electrodes will be replaced once per week while you're in the
hospital.". Answer: a. "I will clean your skin with an alcohol pad"
⩥ An EKG technician is performing a standard 12-lead EKG on a
patient who is 4 years old. In which of the following locations should the
technician place the V6 electrodes?
a. Right midclavicular space
b. Left midclavicular space
c. Right midaxillary line
d. Left midaxillary line. Answer: d. Left midaxillary line
⩥ Which of the following sections of the EKG tracing should an EKG
technician use to measure the QRS complex?
a. End of the Q wave to the beginning of the S wave
b. Beginning of the Q wave to the beginning of the S wave
c. End of the Q wave to the beginning of the T wave
