How to Prepare for the Test
Make sure your health care provider knows about all the medicines you are taking. Some drugs can interfere with test results. Do not exercise, remove coins and keys and other metal objects which may cause vibrations.
Why the Test is Performed
An ECG is used to measure:
- Any damage to the heart
- How fast your heart is beating and whether it is beating normally
- The effects of drugs or devices used to control the heart (such as a pacemaker)
- The size and position of your heart chambers
An ECG is often the first test done to determine whether a person has heart disease. Your doctor may order this test if:
- You have chest pain or palpitations
- You are scheduled for surgery
- You have had heart problems in the past
- You have a strong history of heart disease in the family