A multilead wavelet-based ECG delineator based on the RMS signal

Abstract:

In this work a multilead (ML) algorithm for ECG delineation was validated against the CSE and the PTB databases (DB). This algorithm is based on a previously validated single-lead (SL) algorithm, which is also used as reference in this work. For both DB a set of manual reference annotations made by experts is available. The algorithm performance was assessed by the measurement of QRS onset (QRSon) and T wave offset (Toff) in both DB. The differences (mean±sd in ms) between automatic and experts annotations for CSEDB was for QRSon 6.7 ± 7.2 and for Toff 0.1 ± 10.2. For the PTBDB, results were for QRSon -5.7 ± 6.9 and for Toff 11.3 ± 24.4. Also standard deviation of QT interval in 10 consecutive beats was calculated as a measurement of stability in the PTBDB, resulting in 6.7 ± 14.3. In conclusion this ML approach is more recommendable than SL in applications where measurement stability is mandatory and when absolute value of QT is required as a lead-independent measure.

Año de publicación:

2006

Keywords:

Fuente:

scopus