Detection of microvolt T wave alternans (TWA) is a non-invasive method to identify patients at risk for sudden cardiac death. ECGs show that visible TWA is often nonstationary. Thus, we developed a new correlation method (CM) for TWA detection, and we tested CM's ability to detect non-stationary TWA in comparison with accepted spectral method (SM). In a simulation study CM and SM were used to evaluate stationary and non-stationary TWA of different amplitude. Other simulated conditions included: background noise, poor synchronization and windowing of the T waves; and amplitude respiration modulation of the T wave.
Computer Detection of Non-Stationary T Wave Alternans using a New Correlation Method / Burattini, L., Zareba, W., Couderc, J.p., Titlebaum, E.l., Moss, A.j.. - In: COMPUTERS IN CARDIOLOGY. - ISSN 0276-6574. - 24:(1997), pp. 657-660. (Computers in Cardiology ).
Computer Detection of Non-Stationary T Wave Alternans using a New Correlation Method
BURATTINI, LAURA;
1997-01-01
Abstract
Detection of microvolt T wave alternans (TWA) is a non-invasive method to identify patients at risk for sudden cardiac death. ECGs show that visible TWA is often nonstationary. Thus, we developed a new correlation method (CM) for TWA detection, and we tested CM's ability to detect non-stationary TWA in comparison with accepted spectral method (SM). In a simulation study CM and SM were used to evaluate stationary and non-stationary TWA of different amplitude. Other simulated conditions included: background noise, poor synchronization and windowing of the T waves; and amplitude respiration modulation of the T wave.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
