EKG (NCMA) Exam QUESTIONS AND
CORRECT ANSWERS
V1 - CORRECT ANSWER Fourth intercostal space, right sternal border
V2 - CORRECT ANSWER Fourth intercostal space, left sternal border
V3 - CORRECT ANSWER Midway between V2 and V4
V4 - CORRECT ANSWER Fifth intercostal space, left midclavicular line.
V5 - CORRECT ANSWER Left of the anterior axillary fold, in line with V4
V6 - CORRECT ANSWER left of the midaxillary, in line with V4 and V5
Which of the following are appropriate actions for the ECG technician to take when placing
electrodes on a patient's skin for a 24-hour Holter monitor? (Select the three (3) correct
answers.) - CORRECT ANSWER A Holter monitor is used to monitor a patient's heart
during normal activity (for a period of 24-48 hours or up to 30 days). It is a small monitor
that can be carried in a pouch or strapped to the waist or shoulder. The electrodes should be
placed so they will stay in place for the duration of the monitoring.
Avoid scars and incisions when selecting where to place electrodes. Electrodes and lead wires
should be secured to the patient. Abrading the skin with a dry 4x4 is one approach to
preparing the skin. Lead wires can be placed facing any direction.
What is the approximate amount of time for the QRS complex to record on an ECG? -
CORRECT ANSWER 0.06-0.10 seconds
The QRS complex should be recorded for 0.06-0.10 seconds when running an ECG.
, (greater than 0.12 is considered abnormal and you would need to consider a bundle branch
block),
The PR interval normal range is - CORRECT ANSWER 0.12-0.20 seconds,
.
The ECG technician is performing an ECG on a patient who is obese, and wandering baseline
is present. Which of the actions should the technician take? (Select the two (2) correct
answers.) - CORRECT ANSWER In this scenario, it is important to make sure good
skin preparation and new electrodes and clean clips are used.
A patient with Parkinson's comes in for an ECG with noticeably severe tremors. Which of the
following should the medical assistant do to ensure a proper reading? - CORRECT
ANSWER Have the patient slide their hands under their buttocks.
A patient with Parkinson's could cause a somatic tremor artifact. The technician should have
the patient place their hands under their buttocks which would help hold the arms still so
there would be less movement.
What is the abbreviation for electroencephalogram? - CORRECT ANSWER EEG is
the abbreviation for electroencephalogram (a test that measures and records electrical activity
in the brain utilizing electrodes).
EKG and ECG are both abbreviations for electrocardiogram,
Which of the following diagnostic procedures uses ultrasound to display an image of the
structure of the heart? - CORRECT ANSWER An echocardiogram uses high pitched
sound waves to create visual images as blood flows through the heart. The test is noninvasive
and may also be called a sonogram.
An electroencephalogram looks at activity in the brain,
CORRECT ANSWERS
V1 - CORRECT ANSWER Fourth intercostal space, right sternal border
V2 - CORRECT ANSWER Fourth intercostal space, left sternal border
V3 - CORRECT ANSWER Midway between V2 and V4
V4 - CORRECT ANSWER Fifth intercostal space, left midclavicular line.
V5 - CORRECT ANSWER Left of the anterior axillary fold, in line with V4
V6 - CORRECT ANSWER left of the midaxillary, in line with V4 and V5
Which of the following are appropriate actions for the ECG technician to take when placing
electrodes on a patient's skin for a 24-hour Holter monitor? (Select the three (3) correct
answers.) - CORRECT ANSWER A Holter monitor is used to monitor a patient's heart
during normal activity (for a period of 24-48 hours or up to 30 days). It is a small monitor
that can be carried in a pouch or strapped to the waist or shoulder. The electrodes should be
placed so they will stay in place for the duration of the monitoring.
Avoid scars and incisions when selecting where to place electrodes. Electrodes and lead wires
should be secured to the patient. Abrading the skin with a dry 4x4 is one approach to
preparing the skin. Lead wires can be placed facing any direction.
What is the approximate amount of time for the QRS complex to record on an ECG? -
CORRECT ANSWER 0.06-0.10 seconds
The QRS complex should be recorded for 0.06-0.10 seconds when running an ECG.
, (greater than 0.12 is considered abnormal and you would need to consider a bundle branch
block),
The PR interval normal range is - CORRECT ANSWER 0.12-0.20 seconds,
.
The ECG technician is performing an ECG on a patient who is obese, and wandering baseline
is present. Which of the actions should the technician take? (Select the two (2) correct
answers.) - CORRECT ANSWER In this scenario, it is important to make sure good
skin preparation and new electrodes and clean clips are used.
A patient with Parkinson's comes in for an ECG with noticeably severe tremors. Which of the
following should the medical assistant do to ensure a proper reading? - CORRECT
ANSWER Have the patient slide their hands under their buttocks.
A patient with Parkinson's could cause a somatic tremor artifact. The technician should have
the patient place their hands under their buttocks which would help hold the arms still so
there would be less movement.
What is the abbreviation for electroencephalogram? - CORRECT ANSWER EEG is
the abbreviation for electroencephalogram (a test that measures and records electrical activity
in the brain utilizing electrodes).
EKG and ECG are both abbreviations for electrocardiogram,
Which of the following diagnostic procedures uses ultrasound to display an image of the
structure of the heart? - CORRECT ANSWER An echocardiogram uses high pitched
sound waves to create visual images as blood flows through the heart. The test is noninvasive
and may also be called a sonogram.
An electroencephalogram looks at activity in the brain,
