Closed- versus open-loop assessment of heart rate baroreflex

Author

Barbieri, Riccardo ; Parati, Gianfranco ; Saul, J. Philip

Author_Institution

Children´´s Heart Center, Med. Univ. of South Carolina, SC, USA

Volume

20

Issue

2

fYear

2001

Firstpage

33

Lastpage

42

Abstract

The autoregressive multivariate techniques described are based on simplified models of the entire cardiovascular system and satisfy both the requirements of not perturbing the system and providing a closed-loop evaluation of the interactions between R-R interval and arterial blood pressure. The closed-loop analysis is also able to calculate some of the indices previously used for baroreflex quantification, allowing for a direct comparison of the different approaches

Keywords

autoregressive processes; biocontrol; blood vessels; cardiovascular system; feedback; feedforward; haemodynamics; identification; physiological models; spectral analysis; time series; transfer functions; R-R interval; abnormal blood pressure regulation; arterial blood pressure; autoregressive multivariate techniques; baroreflex quantification; black box model; cardiovascular system; closed-loop assessment; feedback; feedforward; heart rate baroreflex; identification; noise generated model; noninvasive assessment; normal blood pressure regulation; open-loop assessment; simplified models; time-variant analysis; transfer functions; Baroreflex; Blood pressure; Cardiology; Cardiovascular system; Frequency domain analysis; Gain measurement; Heart rate; Open loop systems; Signal processing; Transfer functions;

fLanguage

English

Journal_Title

Engineering in Medicine and Biology Magazine, IEEE

Publisher

ieee

ISSN

0739-5175

Type

jour

DOI

10.1109/51.917722

Filename

917722