An ECG whilst at rest may be normal despite significant coronary artery disease. During an exercise ECG, the heart is made to work harder so that if there is any blood vessel narrowing, poor blood supply may be picked up on the heart tracings.
For this test you will walk on a treadmill while your heart is carefully monitored. The treadmill gets faster with time but you can stop at any time. This test is supervised continuously and interpreted by a doctor. This test is used to see if there is any evidence of cardiovascular disease. It helps determine how severe the coronary artery disease is, what further investigations are needed, and how it is best treated.
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