A cardiac stress test is a recording of the heart's activity during exercise. The heart is monitored using electrodes to record its electrical activity. Heart activity is also measured by looking at changes in blood pressure and pulse during the test.

During physical activity, your body needs higher levels of oxygen. It gets oxygen from the blood. During exercise, the heart has to work harder to get blood to your organs. A cardiac stress test is used to see if your heart works well, even when it is working hard. The test is most often done to:

  • Evaluate whether complaints of chest pain are related to your heart
  • Determine if arteries to your heart have blockages or narrowing
  • Identify an irregular heart rhythm, or see if you pass out during or after exercise
  • Monitor your heart's response to treatment or procedures
  • Determine a safe level of activity before the start of an exercise plan
  • Plan rehabilitation after a heart attack

EKGs Revealing Cardiac Muscle Damage
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