Additionally, we will develop an algorithm for the detection of pulse wave alternans
in the photoplethysmogram recorded from the finger, and develop a mobile application to detect repolarization alternans
from a fingertip pulse wave using the built-in camera lens.
Objective: The aim of this study was to evaluate influence of noise, T-wave jitter and electrocardiographic (ECG) signal parameters on sensitivity of T-wave alternans
(TWA) detection methods.
Results of the Alternans
Before Cardioverter Defibrillator (ABCD) Trial show that both diagnostics tests--the T-wave alternans
(TWA) test and the electrophysiological study (EPS)--are equally predictive.
Since T-wave alternans
often precedes sudden cardiac arrest, researchers have suggested that it could be used to decide which patients need implanted defibrillators (SN: 9/23/06, p.
7 /PRNewswire/ -- The physicians at Westside Medical Associates of Los Angeles (WMALA) in conjunction with Westside Medical Imaging have implemented the use of the novel and exciting Micro-T-Wave Alternans
technology for identifying patients at risk for sudden cardiac death (SCD).
SAN FRANCISCO -- The search is on for a more reliable predictor of patients with heart failure who are 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).
The enzyme converts cane or beet sugar to alternans
, a class of low-calorie or noncaloric dextrans.
OTCBB: CAMH), a developer of non-invasive diagnostic tests for cardiac disease, today announced that new data presented at the Heart Rhythm Society's 32nd Annual Scientific Sessions in San Francisco confirm the diagnostic value of Microvolt T-wave Alternans
(MTWA) testing in identifying patients at risk of sudden cardiac arrest (SCA).
5 cycles per beat; noise, [sigma]noise--mean level and standard deviation of the noise registered in the spectrum in the predefined window located outside the alternans
If such trials prove that T-wave alternans
and other new measures can supplement ejection fraction in clinical evaluation of patients, doctors may save more lives even though they implant fewer devices than they do now.