What are they used for?Stress tests are most often used to:Diagnose coronary artery disease, a condition that causes a waxy substance called plaque to build up in the arteries. It can cause dangerous blockages in blood flow to the heart.Diagnose arrhythmia, a condition that causes an irregular heartbeatFind out what level of exercise is safe for youFind out how well your treatment is working if you've already been diagnosed with heart diseaseShow if you are at risk for a heart attack or other serious heart condition
