T-wave alternans

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T-wave alternans

A repolarisation phenomenon manifesting as a microvolt beat-to-beat change in the amplitude of the T wave and ST segment on EKGs.  T-wave alternans has low specificity as a predictor of arrhythmic risk in unselected populations with prior myocardial infarction.

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.
References in periodicals archive ?
Computer detection of non-stationary T wave alternans using a new correlation method.
The ALPHA study (T-Wave ALternans in Patients with Heart FAilure) is the largest trial of microvolt T wave alternans (MTWA) in patients with non-ischemic cardiomyopathy.
00041) on Microvolt T Wave Alternans agreeing to make it a covered benefit for its beneficiaries in California and 13 other states.
T wave alternans after sotalol: evidence for increased sensitivity to sotalol after conversion from atrial fibrillation to sinus rhythm.
Exercise is superior to pacing for T wave alternans measurement.
Assessment of micro volt T wave alternans on and off beta-blocker therapy (Abstract).
OTCBB:CAMH) today announced that Humana has issued a coverage policy on Microvolt T Wave Alternans testing, agreeing to cover the test for its beneficiaries.
OTCBB: CAMH) today announced that CIGNA HealthCare has revised its Coverage Position on Microvolt T Wave Alternans testing, agreeing to make it a covered benefit for its beneficiaries.
OTCBB:CAMH) today announced that Aetna has revised its Coverage Policy Bulletin (0579) on Microvolt T Wave Alternans agreeing to make it a covered benefit for its beneficiaries.