Electrocardiogram (ECG)

An electrocardiogram (ECG) is a medical test that measures the electrical activity of the heart. It involves placing electrodes on the skin, typically on the chest, arms, and legs. These electrodes detect the electrical impulses generated by the heart as it contracts and relaxes, producing a graphical representation of the heart's rhythm and electrical activity. ECGs are commonly used to diagnose heart conditions, such as arrhythmias, heart attacks, and other abnormalities in heart function.