What is a T-Wave Alternans Test?
A T-Wave Alternans Test is a stress test that helps your physician determine whether you are at risk for developing dangerous heart rhythm disturbances.  You will have 14 electrodes and leadwires attached to your torso while you walk on a treadmill.  If you are unable to walk sufficiently on the treadmill, you may receive a medication through an IV to increase your heart rate to the appropriate levels.

How long does the test take?
A T-Wave Alternans test usually takes 30-60 minutes to complete.  If you walk on the treadmill, total walk time is usually 5-15 minutes.

What are my instructions for the test?
You should take your medications as usual unless instructed otherwise by your physician.  Bring a list of all medications that you are currently taking, both prescription and over-the-counter, to your appointment. You should avoid eating a large meal within one hour of your test time.  Wear comfortable clothes and shoes that are comfortable to walk in.

What will I feel during the test?
If you walk on the treadmill, you may experience the normal effects of exercise (heavy breathing, leg fatigue, etc...) which should resolve a few minutes after the test is completed.  If you receive an IV medication to simulate exercise, you may feel your heart beating faster, flushing, headache or skin tingling.  In rare cases, nausea and dizziness may occur.  These symptoms resolve after the test is completed and the medication leaves your body.

When will I receive my results?
If you have an appointment at IHP within 10 business days of your test, you will receive your results at that time.  If your appointment is greater than 10 days away or you have no appointment scheduled, your physician or his/her staff will call you with your results.