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T-wave alternans

   Also found in: Acronyms, Wikipedia 0.01 sec.
T-wave alternans
Cardiology A subtle every-other-beat variation in T waves that is prognostic of Pts at high risk for life-threatening cardiac arrhythmias and sudden cardiac death. See Alternans test.


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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.
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.
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).
 
 
 
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