Cardiac Stress Test
A cardiac stress test is the analysis of the heart’s electrical activity and rhythms before, during and after exercising on a treadmill or bicycle in a controlled environment.
Many people with coronary artery blockage have minimal symptoms and an unchanged EKG while at rest. By exposing the heart to the stress of exercise during the test, signs and symptoms of heart disease may be revealed and can lead to a definitive diagnosis and treatment.
The test screens for the presence of heart disease and evaluates the physical status of previous surgical procedures, such as coronary artery bypass and angioplasty, as well as an individual’s fitness level. It is performed in the presence of a physician, and is also known as a graded exercise test (GXT), exercise-tolerance test (ETT), exercise-stress test, exercise electrocardiography or treadmill test.