Threshold Sensitivity in Time Domain BRS Estimation: Minimum Beat-to-Beat Changes and Minimum Correlation

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2007

Autores

Gouveia, S (Autor) Outra; Rocha, AP (Autor) FCUP; Laguna, P (Autor) Outra; Lago, P (Autor) FCUP

Ata de Conferência Internacional

Título: Computers in Cardiology Series

Páginas: 557-560

34th Annual Conference on Computers in Cardiology

Durham, NC, SEP 30-OCT 03, 2007

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

Outras Informações

ID Authenticus: P-004-CVG

DOI: 10.1109/cic.2007.4745546

Abstract (EN): In the sequences technique, baroreflex sensitivity, (BRS) is estimated as tire slope between SBP and RR values in baroreflex sequences (BS). For BS identification, thresholds are applied to SBP and RR series and no recommendation on the appropriate values is given in the literature, Changes in their values ran modify the number of BSs and the BRS estimate, making difficult to compare results from different studies, if not impossible. In this work, optimum thresholds values for the identification of baroreflex related events are given. The results in the EuroBaVar dataset indicate that BRS analysis can be improved if no minimum SBP and RR beat-to-beat changes art, imposed and the minimum SBP-RR correlation is 0.8. This combination duplicates the number of beats (located in more and longer segments) with global SBP-RR correlation close to 0.8, without introducing substantial changes in BRS estimates distribution. Also, it makes possible to estimate the BRS when BSs are not identified.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4