MTWA

Microvolt T- wave alternans is a non-invasive test to identify people at risk for an arrthymia that can cause sudden cardiac death. Most people who suffer cardiac arrest have a pre-identifiable electrical disorder that puts them at risk. MTWA test requires elevation of your heart rate and rhythm via an EKG while walking on a treadmill for a short time.

Pre and post instructions

What to do:
Do not eat or drink anything for 2 to 3 hours before the test. Diabetic patients may have a snack 2 to 3 hours before the test and take half of your normal insulin dose.
DO NOT TAKE ANY BETA BLOCKERS CALCIUM CHANNEL BLOCKERS 48 HOURS PRIOR TO THE TEST. Medication list.
You may take your other medications the morning of your test.
Do not use any body lotions or creams the day of the test.
Wear comfortable walking shoes and a tee shirt.

Post procedure:
The test will take approximately 40 minutes to complete.
There are no special post instructions.
You will be scheduled for a follow-up visit approximately 1 week later to receive the results.

Consent form for MTWA

What to expect:
Dr Aldrich will be on the premises during the test.
A technologist will prepare you for the test. They will prep the skin with a mild abrasive and then apply 14 electrodes, take your blood pressure, and take EKG readings. Using a low level exercise or a chemical stress test, the technologist will attempt to get your heart rate between 100 to 110 beats per minute for 2 1/2 minute. Once that has been achieved then the technologist will slowly increase your heart rate to 110 to 120 beats per minute for 1 1/2 minute.