Evaluation of Microvolt T-Wave Alternans(MTWA) Testing for the Detection of Active Ischemia (MTWA-CAD)
MTWA-CAD is a feasibility study designed to evaluate Microvolt T-Wave Alternans (MTWA) testing for the purpose of detecting active ischemia in patients with known or suspected coronary artery disease (CAD). MTWA is a subtle, alternating pattern in the T wave portion of the surface electrocardiogram (ECG) that is associated with increased risk of ventricular tachyarrhythmias and sudden cardiac arrest (SCA).
Coronary Artery Disease
|Study Design:||Observational Model: Cohort
Time Perspective: Retrospective
|Official Title:||Evaluation of Microvolt T-Wave Alternans Testing for the Detection of Active Ischemia in Patients With Known or Suspected Coronary Artery Disease: A Feasibility Study|
|Study Start Date:||June 2010|
Patients being evaluated for active ischemia
Subjects with known or suspected CAD who are scheduled to undergo routine exercise MPI or stress echocardiography for the detection of active ischemia are eligible for enrollment.
Ischemia, a common trigger for arrhythmias, is a well-documented cause of repolarization alternans. Human studies have shown that active ischemia can be associated with visible as well as microvolt-level T-wave alternans. While MTWA testing is traditionally used to evaluate arrhythmic risk, this known association with ischemia may allow MTWA testing to be used as a diagnostic tool to detect underlying CAD. The MTWA-CAD study will assess the feasibility of this concept by measuring MTWA during routine nuclear stress testing or stress echocardiography with treadmill exercise. This is a feasibility study designed to verify preliminary observations under controlled environments and to generate hypotheses, endpoints, and sample sizes for future investigations.
|United States, Connecticut|
|Connecticut Clinical Research, LLC|
|Bridgeport, Connecticut, United States, 06606|
|United States, Texas|
|Northwest Houston Heart Center|
|Tomball, Texas, United States, 77375|
|Principal Investigator:||Edward J Kosinski, MD||Connecticut Clinical Research, LLC|