An ECG (Electrocardiogram) is a simple, non-invasive diagnostic test that records the electrical signals generated by the heart. These signals are crucial for coordinating the heartbeat and ensuring effective blood circulation throughout the body.
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How It Works:
Small, sticky electrodes are attached to the chest, arms, and legs.
The electrodes detect the heart’s electrical activity and display it as waveforms on a monitor or printed on paper.
The test typically takes 5–10 minutes and does not involve any pain or radiation.
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What ECG Detects:
Arrhythmias (irregular heartbeats)
Heart attacks (current or previous)
Coronary artery disease
Heart enlargement or thickening
Electrolyte imbalances
Effects of medications on the heart
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When It’s Recommended:
If a patient experiences chest pain, dizziness, palpitations, or shortness of breath
As a routine part of a heart health check-up
Before surgery or starting certain medications
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Types of ECG:
Resting ECG: Done while the patient is lying down.
Exercise ECG (Stress Test): Done while walking on a treadmill (TMT).
Holter Monitoring: Continuous ECG recording over 24–48 hours.
An ECG is one of the most common and essential tests in cardiology, offering fast and reliable insight into heart health.