An electrocardiogram (EKG ) is a test performed by a nurse who studies how the heart works by measuring its electrical activity.
At each heartbeat, an electrical pulse passes through the heart. This wave causes the heart muscle to contract so that it expels the blood from the heart.
An EKG measures and records the electrical activity that goes through the heart. An EKG is a painless and non-invasive procedure, which means nothing is injected into the body.
Electrodes are attached to various areas of the body such as the arms, legs and chest.
The electrodes are fixed using adhesive stamps. Sensors, located in the electrodes, detect the electrical activity of the heart.
The procedure requires you to lie down. An EKG lasts about 5 minutes.