EXAMS PERFORMED IN THE ELECTROCARDIOGRAPHY LAB
Electrocardiogram (ECG, or EKG)
An electrocardiogram (ECG, also known as EKG) is a safe and painless test used to look
at the electrical activity of the heart. Sensors called electrodes are placed on the skin,
which create a recording on a device that uses graph paper to form an interpretation of the
heart’s electrical activity.
An ECG is used to:
• Evaluate the heart’s rhythm.
• Diagnose poor blood flow to the heart muscle (ischemia).
• Diagnose a heart attack.
• Diagnose abnormalities of the heart, such as heart chamber enlargement and abnormal
electrical activity.
To prepare for the test:
• Do not use creams or lotions the day of the test, as they can interfere with the
electrodes making contact with the skin.
• Wear clothes that can be easily removed. Electrodes will be placed on the arms, legs,
and chest area.
What to expect:
For a resting ECG, a technician will attach 10 adhesive stickers (electrodes) to the skin of
your chest, arms, and legs. For men, hair may be removed for a better connection. You will
lie flat on a table while the device forms a picture of your heart. The duration of a resting
ECG from start to finish is about 10 minutes. However, the device only takes a few seconds
to capture the picture. All ECG results will be kept on file to compare with future ECG
results.
You should arrive 15 minutes before your scheduled appointment. If you have any
questions, please ask your doctor.