Improved Time Domain BRS Assessment with the Use of Baroreflex Events

• Type: Article in International Conference Proceedings Book
• Date: 2007

Authors

Gouveia, S (Author) Other; Rocha, AP (Author) FCUP; Laguna, P (Author) Other; Lago, P (Author) FCUP

Conference proceedings International

Title: Computers in Cardiology Series

Pages: 813-816

34th Annual Conference on Computers in Cardiology

Durham, NC, SEP 30-OCT 03, 2007

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 5 Citations

Scientific classification

FOS: Engineering and technology > Environmental biotechnology

Other information

Authenticus ID: P-004-CVH

DOI: 10.1109/cic.2007.4745610

Abstract (EN): The sequences technique is based on a linear regression of SBP and RR values in baroreflex sequences (BSs). In normal conditions most of BSs have 3 beats length and the estomated slope is potentially inaccurate. Also, the number of beats in BSs is approxintately 25% of the total number of beats, evidencing that a large part of the data is discarded from BRS analysis. In this work, global BRS estimators combined with baroreflex events (BEs) are proposed as a way to improve BRS assessment in normal conditions and to allow its quantification in cases of BS absence. The results in the EuroBaVar dataset showed that the number of beats in BEs gets up to 50% of the total, with cot-relation between the corresponding SBP and RR values close to 0.8. Also, BRS assessment based on global estimators combined with BEs distinguishes Lying from Standing positions in all the subjects of that dataset, including those without identified BSs.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4