Abstract: T-wave alternans (TWA) is a cardiac phenomenon associated with the mechanisms leading to sudden cardiac death. Several methods exist to automatically detect and estimate TWA in the ECG on a ...

Likewise, we use the term mechanical alternans to refer equivalently to pulsus alternans and intracellular Ca transient (CaT) alternans, since the CaT is the major determinant of contractile strength.

Background Alternans of the ST segment of the ECG is an important risk factor for sudden cardiac death. Premature beats during alternans and the development of discordant alternans are associated with ...

Background: T-wave alternans (TWA) is a useful method for identifying patients who are at risk for sudden cardiac death. We aimed to determine the effects of different pacing modes on test results ...