Electrocardiogram

What is an electrocardiogram (or electrocardiography)?

This is a test used to find out if the heart rate and rhythm are normal or if heart damage has occurred. It's a graphic record of the heart's electrical impulses.

What is a 12-lead electrocardiogram?

When an electrocardiogram is done, several wires, or "leads," are usually attached to the arms, legs and chest. This is called a "12-lead ECG." It allows a doctor to take 12 different recordings at the same time. Each lead records the same electrical impulse, but from a different position in relation to the heart.

Why is a 12–lead electrocardiogram done?

It can determine heart rate, heart rhythm, chamber enlargements, conduction defects, evidence of ischemia and myocardial infarction, and arrhythmias .

What Preparation is Needed?

• This test must be ordered by a doctor.
• No restrictions on food, liquid or medications prior to the test.
• Do not apply lotions, oils, or powder to the chest area.

How is the test done?

• Electrodes are placed on the chest, arms and legs.
• The test takes approximately 5 minutes
• The test will then be interpreted by a cardiologist