Microsoft word - twave instructions.doc
What is a T-Wave Alternans?
Microvolt T-Wave alternans testing, also known as T-Wave alternans is a noninvasive technique used to identify patients who are at high or low risk for sudden cardiac death or cardiac arrest due to ventricular tachyarrhythmias. T-Wave alternans refers to a beat-to-beat variability in the amplitude of the risk stratification tool to predict the likelihood of fatal arrhythmias and sudden cardiac death in patients with a history of myocardial infarction or cardiomyopathy. Research has shown that a negative T-Wave alternans test result means there is very minimal risk of the patient developing ventricular tachyarrhythmia's and can therefore help shape the treatment plan by sparing the risk and expense of surgery for treatment team to explore more aggressive means of managing patient, such as medication or treatment with an ICD.
It will be your responsibility to provide our office with your insurance card and a referral. If a
referral is needed you will need to bring the original copy to the office with you. This is very important, as
the test cannot be performed without a referral.
This test requires coordination between your doctor and the test center. If you need to
cancel this test you must notify our office 24 hours in advance.
The T-Wave Alternans test will take about 1 hour. You will be walking on the treadmill
for about 5-15 minutes at a slow pace.
Please wear comfortable clothing and appropriate shoes to walk in. No jewelry please. Ladies
please wear a bra for this test and do not wear a dress.
Men please be advised that the test will involve
shaving your chest. If you want to shave at home feel free to do so.
Please bring your current medications with you. Stop
the following medications 24 hours
prior to test (unless you have chest pain on stopping medications):
Acebutolol (Secral) ,Bextaxolol (Kerlone), Bisoprolol (Zebeta, Ziac), Carvedilol (Coreg),
Labetalol (Normodyne, Trandate), Metoprolol (Lopressor, Toprol XL, Naldolol (Corgard), Nebiuolol
(Bystolic), Penbutolol (Levatol), Pindolol (Visken), Propanolol (Inderal, InnoPran XL), Sotalol (Betapace),
Tenormin (Atenolol), Timolol (Blocadren)
Amlodipine (Caduet, Lotrel, Norvasc), Diltiazem (Cardizem, Carta XT, Dilacor, Tizac,
Taztia XT), Felodipine (Plendil, Lexxel), Isradipine (Dynacirc), Nicardipine (Cardene), Nifedipine
(Procardia, Adalat, Nifedical, Nifediac), Nisoldipine (Sular), Verapamil (Calan, Covera, Veralan, Isoptin,
Amiodarone (Cordarone), Digoxin (Lanoxin), Dronedarone (Multaq), Flecanide,
Propaffenone (Rythmol), Quinidine, Sotalol (Betapace)
Isosorbide Dinitrate (Isordil), Isosorbide Monitrate (Imdur), Nitrobid,
Nitroglycerin Patch (Nitro-dur, Nitrodisc, Transderm-Nitro, Minitran)
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