Jayan Pradhan,

An electrocardiogram (ECG) is a test that can help diagnose certain heart conditions by measuring the electrical activity of the heart.

Small sticky dots (electrodes) and wire leads are placed on your chest, arms and legs. The leads attach to the ECG machine (electrocardiograph) which records the electrical activity of the heart muscle and displays this as a trace on a screen or on paper.

Any abnormality in the heart rhythm or rate, or damage to the heart muscle, can change the electrical activity of the heart. A doctor will examine the trace and look for specific features of different heart conditions.

An ECG can help diagnose:

A doctor may recommend an ECG for a person:

The three major types of ECG are:

An ECG is a simple test that usually doesn’t need any special preparation.

After an ECG, the electrodes are removed from the skin. You can resume normal activities immediately.

A doctor can usually interpret the results of your ECG straight away based on your medical history, symptoms and clinical examination.

The results of your ECG will help determine what treatment you need, if any.

Your doctor will discuss the various treatments available to find the treatment most suitable for you.

A person with a heart condition may have a normal ECG result if the condition does not cause a problem with the electrical activity of the heart.

In this case, your doctor may recommend other tests, including:

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