Title :
The use of continuous non-invasive blood pressure recorder to study experimental stressors
Author :
Pretorius, P.J. ; Malan, N.T. ; Huisman, H.W. ; Laubscher, P.J. ; Eloff, F.C. ; de Klerk, F.A.J. ; van der Merwe, S.J.
Author_Institution :
Dept. of Physiol., Univ. for Christian Higher Educ., Potchefstroom, South Africa
Abstract :
A noninvasive continuous arterial blood pressure recording device, Finapres, developed by K.H. Wesseling et al. (1986) was used to investigate cardiovascular reactivity during several experimental stressors. Blood volume as recorded by an infrared plethysmograph is clamped to a set point value by adjusting cuff pressure in parallel with intra-arterial pressure by means of an electro-pneumatic servo-control system. Plotting pressure and heart rate parameters on a XY-vector scale made it possible to establish different autonomic nervous reactivity patterns for cognitive, emotional, and physical stressors. The usefulness of the Finapres for psychophysiological investigations was evaluated
Keywords :
biological techniques and instruments; haemodynamics; pressure measurement; Finapres; XY-vector scale; autonomic nervous reactivity patterns; blood volume; cardiovascular reactivity; cognitive stressors; continuous noninvasive blood pressure recorder; cuff pressure; electro-pneumatic servo-control system; emotional stressors; experimental stressors; heart rate parameters; infrared plethysmograph; intra-arterial pressure; physical stressors; psychophysiological investigations; Arteries; Blood pressure; Cardiology; Clamps; Fingers; Heart rate; Pressure measurement; Psychology; Servosystems; Volume measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95609
