An electrocardiogram (ECG or EKG) is one of the simplest and fastest procedures used to evaluate the heart. Electrodes (small, plastic patches) are placed at certain locations on the chest, arms, and legs. When the electrodes are connected to an ECG machine by lead wires, the electrical activity of the heart is measured, interpreted, and printed out for the doctor's information and further interpretation.

Types of Electrocardiograms

Resting Electrocardiogram

This test monitors the heart's activity at rest.

Exercise Electrocardiogram

This test monitors the heart's activity under conditions of physical exercise. It is used for the evaluation of exercise capacity, for the detection of coronary disease and the assessment of its severity, for prediction of cardiovascular risk, and for monitoring the response to treatment.

Signal-Averaged Electrocardiogram

Performed for 15-20 minutes, information obtained from this test is processed by a computer to permit detection of cardiac abnormalities that might not be detected by standard ECG. Signal-Averaged ECG is used when arrhythmia is suspected but not seen on a resting ECG, since arrhythmias may be transient in nature and not seen during the short recording time of the resting ECG.

Find A Physician

Your Heart Specialist

Cardiovascular Research

Saving Lives Through Cardiac Research