Aim of the present study was to test our heart-rate adaptive match filter procedure for TWA analysis, which includes a) a heart-rate adaptive match filter, that filters out every ECG component but the TWA and quantifies TWA in terms of the duration (TWAD), amplitude (TWAA), and magnitude (TWAM, defined as TWAD × TWAA); and b) a statistical threshold criterion (STC) to identify, among all TWA detected cases, the ones (TWA+) most likely associated to an increased risk of sudden cardiac death. Our test, performed on the database assembled for the PhysioNet/Computers in Cardiology Challenge 2008, yielded the following results. On average, the data set was characterized by TWAD= 63±31 beats, TWAA= 48±77 μV, and TWAM= 3249±5107 beats μV. Based on our STC, TWA+ cases were 21, yielding a ranking score of 0.684. Use of STC, in the perspective of discriminating risky cases, among all detected TWA cases, might have limited our score.
Heart-rate adaptive match filter based procedure to detect and quantify T-wave alternans / Burattini, Laura; Burattini, Roberto. - In: COMPUTERS IN CARDIOLOGY. - ISSN 0276-6574. - ELETTRONICO. - 35:(2008), pp. 513-516. (Intervento presentato al convegno Computers in Cardiology 2008 tenutosi a Bologna, Italy nel 14-17 Settembre) [10.1109/CIC.2008.4749091].
Heart-rate adaptive match filter based procedure to detect and quantify T-wave alternans
BURATTINI, LAURA;BURATTINI, ROBERTO
2008-01-01
Abstract
Aim of the present study was to test our heart-rate adaptive match filter procedure for TWA analysis, which includes a) a heart-rate adaptive match filter, that filters out every ECG component but the TWA and quantifies TWA in terms of the duration (TWAD), amplitude (TWAA), and magnitude (TWAM, defined as TWAD × TWAA); and b) a statistical threshold criterion (STC) to identify, among all TWA detected cases, the ones (TWA+) most likely associated to an increased risk of sudden cardiac death. Our test, performed on the database assembled for the PhysioNet/Computers in Cardiology Challenge 2008, yielded the following results. On average, the data set was characterized by TWAD= 63±31 beats, TWAA= 48±77 μV, and TWAM= 3249±5107 beats μV. Based on our STC, TWA+ cases were 21, yielding a ranking score of 0.684. Use of STC, in the perspective of discriminating risky cases, among all detected TWA cases, might have limited our score.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
