An Electrocardiogram (ECG or EKG) is a quick, painless test that records the electrical activity of the heart. It is used to detect abnormal heart rhythms, check for blocked or narrowed arteries, and monitor the heart’s overall health.

During the test, electrodes are placed on the skin to capture the heart's electrical signals. It is commonly used to evaluate chest pain, palpitations, dizziness, and other heart-related symptoms. ECG is a crucial diagnostic tool in both emergency and routine cardiac care.