and the susceptibility to ventricular arrhythmias.
Ambulatory ECG-based T-wave alternans
and heart rate turbulence can predict cardiac mortality in patients with myocardial infarction with or without diabetes mellitus.
ECG tracings from patients belong to the T-Wave Alternans
Challenge Database (TWACD) , which contains 100 multichannel ECG records sampled at 500 Hz with 16 bit resolution over a [+ or -] 32 mV range.
Predictive value of T-wave alternans
for arrhythmic events in patients with congestive heart failure.
"The T-wave alternans
test is especially important, because it can identify who's at risk for sudden cardiac death," says Cleveland Clinic cardiologist Patrick Tchou, MD.
Computers can detect the abnormality, called T-wave alternans
, during an electrocardiogram, a recording of the heart's electrical activity.
Consider the FDA's recent approval of a T-wave alternans
Petersburg, Fla., have successfully employed 37-channel magnetocardiography to identify T-wave alternans
"In multiple clinical studies, the microvolt T-wave alternans
testing has been shown to identify accurately both the high- and low-risk patients," explains Dr.
(NASDAQ-CAMH), Bedford, Mass, has announced that clinical results, presented at the annual meeting of the American Heart Association demonstrate that Microvolt T-Wave Alternans
(MTWA) testing can help determine which MADIT II type patients (prior myocardial infarction and left ventricular ejection fraction of 30% or less) should receive an implantable cardioverter defibrillator (ICD).
The test measures a tiny fluctuation in heartbeat called the T-wave alternans
BACKGROUND: Epidemiological studies have assessed T-wave alternans
(TWA) as a possible mechanism of cardiac arrhythmias related to air pollution in high-risk subjects and have reported associations with increased TWA magnitude.