Causality of heart rate - blood pressure interactions during mental and orthostatic stress

Author

Javorka, Michal ; Czippelova, Barbora ; Chladekova, Lenka ; Turianikova, Zuzana ; Visnovcova, Zuzana ; Lazarova, Zuzana ; Tonhajzerova, Ingrid

Author_Institution

Dept. of Physiol., Comenius Univ., Martin, Slovakia

fYear

2014

Firstpage

769

Lastpage

772

Abstract

Baroreflex function is usually assessed from spontaneous oscillations of blood pressure (BP) and heart rate (HR) assuming the unidirectional influence from BP to HR. However, the interaction of BP and HR is bidirectional - HR also influences BP. The novel methods based on Granger causality concept for separate analysis of feedback (baroreflex) and feedforward (mechanical) interactions between HR and BP were recently developed.

Keywords

blood pressure measurement; electrocardiography; medical signal processing; BP signal recording; ECG signal recording; Granger causality; RRlSBP interactions; augmented feedback interaction; baroreflex function; bidirectional HR interaction; bivariate causal close-loop model; blood pressure interactions; feedback analysis; feedforward interactions; head-up tilt test; heart rate; information domain analysis; mechanical interactions; mental arithmetics; mental stress; orthostatic stress; spontaneous oscillations; supine rest; systolic blood pressure oscillations;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing in Cardiology Conference (CinC), 2014

ISSN

2325-8861

Print_ISBN

978-1-4799-4346-3

Type

conf

Filename

7043156