An electrocardiogram (ECG) is a simple test that can be used to check your heart’s rhythm and electrical activity. Sensors attached to the skin are used to detect the electrical signals produced by your heart each time it beats. These signals are recorded by a machine and are looked at by a doctor to see if they’re unusual. The whole test takes a few minutes and is completely painless. You will need to lie still as moving can affect the results.
Doctors utilize this test to detect or determine many common heart problems. This test is a noninvasive and painless way to diagnose heart issues. ECG is done for the following reasons:
- If you have had a previous heart attack
- If you have chest pain or symptoms of a heart attack.
- If you already have a history of blocked or narrowed arteries in your heart (coronary artery disease). Abnormal heart rhythm (arrhythmias)
- To observe how well a heart disease treatment, such as a pacemaker, is working
Your physician might suggest an ECG if you have any of the following signs and symptoms:
- Chest pain
- Rapid pulse
- Shortness of breath
- Dizziness, lightheadedness or confusion
- Weakness, fatigue or a decline in the ability to exercise
- Heart palpitations
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