ECG
The Electrocardiogram is done by placing small electrodes (they look like stickers) on your chest to read the electrical activity of the heart. The physician will get a printout that looks like graph paper with spiking lines drawn across it. The lines represent the electrical conduction of your heart. Physicians are trained to see abnormalities in the electrical conduction that may indicate that you have or have had a problem with your heart. Electrocardiograms can detect problems caused by blocked coronary arteries, heart attacks, or rhythm abnormalities (arrhytmias.)