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To increase the accuracy of the stress test, it is commonly used in conjunction with an echocardiogram, a stress echocardiogram.

Ultrasound pictures of the heart are taken a rest and with stress.

If a particular segment of the heart stops moving with stress, it suggests a blocked artery to that area. The accuracy of stress echo can be as high as 85 percent.



Above is a resting echocardiogram that shows normal heart function.

After exercise, the echo below shows that the tip of the heart has stopped moving. This suggests a tight blockage of the left anterior descending artery (LAD).