Microvolt T-Wave Alternans


What is a Microvolt T-Wave Alternans Test? This is a non-invasive test to identify patients at risk of life-threatening heart rhythm disturbances that can lead to sudden cardiac death. This test is performed by using a treadmill to elevate your heart rate.

Depending on your test results, your physician may recommend further testing which usually involves an Electrophysiologist (a cardiologist that specializes in heart rhythms).

How is the test performed? The technician will apply electrodes or sensors to your skin at the chest and truck of your body. These electrodes will later be connected to a wire that connects to the equipment used for testing (HearTwave). You will then be asked to start walking on a treadmill in order to raise your heart rate. This portion usually lasts about 8-10 minutes. During this time, information is collected about your heart at three intervals: during rest, while you are walking, and after exercise.

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