Improved QT variability quantification by multilead automatic delineation

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2005

Autores

Almeida, R (Autor) Outra; Martinez, JP (Autor) Outra; Rocha, AP (Autor) FCUP; Olmos, S (Autor) Outra; Laguna, P (Autor) Outra

Ata de Conferência Internacional

Título: Computers in Cardiology 2005, Vol 32

Páginas: 503-506

32nd Annual Conference on Computers in Cardiology

Lyon, FRANCE, SEP 25-28, 2005

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 9 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

Outras Informações

ID Authenticus: P-000-5FE

DOI: 10.1109/cic.2005.1588148

Abstract (EN): In this work we evaluate the joint robustness of a multilead delineation and a parametric approach to study the relations between HRV and QTV The performance of the automatic system is studied over simulated 3-lead ECG signals in order to quantify the improvement allowed by the multilead delineation. Respiratory effect and contamination with realistic noise extracted from a real ECG, rescaled to obtain SNR levels from 30 to 5 dB, were also considered. Compared with same parametric methods over RR and QT series measured from a single lead based approach, the multilead delineator allows to reduce the error in QTV quantification, in particular the error bias in signals at SNR = 20 dB. It improves the joint performance facing realistic 3 lead noise at SNR >= 20 dB, remarkably around 20 dB, making it usable for ECG signals with QTV levels corresponding to a QT standard deviation >= 13 ms.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4