An ECG (electrocardiogram) is a simple, quick, and painless test that records the electrical activity of your heart. It helps doctors check how your heart is functioning and detect any abnormalities.

What Does an ECG Measure?
An ECG tracks:

• Your heart rate (how fast your heart is beating)
• Your heart rhythm (whether it beats regularly or irregularly)
• The strength and timing of electrical signals as they move through the heart

Why Is an ECG Done?
Doctors may recommend an ECG if you have symptoms such as:

• Chest pain or discomfort
• Irregular heartbeat (palpitations)
• Shortness of breath
• Dizziness or fainting
• Fatigue or weakness

It is also done to:

• Detect heart attacks (past or current)
• Diagnose arrhythmias
• Monitor heart health in people with conditions like high blood pressure, diabetes, or heart disease
• Check the effectiveness of medications or pacemakers

How Is an ECG Performed?

• You lie on a table, and small electrodes (stickers) are placed on your chest, arms, and legs.
• These electrodes are connected to the ECG machine.
• The machine records the heart’s electrical activity as waves on a screen or paper.
• The entire process usually takes about 5–10 minutes.

Types of ECG Tests

• Resting ECG – done while you are lying still
• Stress ECG – done during physical activity like walking on a treadmill
• Holter monitor – a portable ECG worn for 24–48 hours to monitor heart activity throughout the day

Is It Safe?
Yes, an ECG is completely safe. It does not involve any electricity going into the body and has no risks.