Ambulatory ECG-based T-wave
alternans and heart rate turbulence can predict cardiac mortality in patients with myocardial infarction with or without diabetes mellitus.
For these reasons, automatic algorithms have been developed to determine the beginning of the QRS complex and the end of the T-wave
R-wave voltage was greater than 5 mm in V1 with ST segment depression and T-wave
inversion in V1-V3.
ST-segment depression and T-wave
inversion: classification, differential diagnosis, and caveats.
Interestingly, serial ECGs demonstrated resolution of his ST segment elevation after four hours, upon which diffuse and deep inferolateral T-wave
inversion became prevalent.
Conclusion: The classical pattern of biphasic T-wave
inversion on electrocardiogram was seen associated with stenosis in the proximal as well as middle part of the left anterior descending coronary artery.
QT intervals were taken from the onset of the QRS complex to the end of the T-wave
, which was defined as the point T-wave
returned to TP baseline (7).
alternans (TWA) is a non-invasive marker of the vulnerability to ventricular arrhythmia (1).
Now, doctors have completed the first systematic test of using T-wave
alternans for making decisions about implanting defibrillators.
would have tremendous implications for the cost-benefit ratio of this form of treatment," noted the cardiologist at a session on T-wave
SAN FRANCISCO -- The search is on for a more reliable predictor of patients with heart failure likely to benefit from an implantable cardioverter defibrillator--and T-wave
alternans shows the most promise, Dr.
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).
Alternans Test Identifies Latent Risk for Sudden Cardiac Arrest
Medical researchers recently concluded the first systematic test in which they weighed one such promising factor--an electrical characteristic called T-wave
alternans--for deciding who should get a defibrillator.