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Proceedings Paper

Relationship between low-frequency fluctuations in arterial blood pressure and tissue blood volume
Author(s): Meir Nitzan; Anatoly Babchenko; Boris Khanokh
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Paper Abstract

Simultaneous measurements of the low frequency fluctuations of arterial blood pressure, heart rate, tissue blood content and tissue blood volume pulse were performed on 20 healthy male subjects. Arterial blood pressure was measured on the index finger by Finapres, simultaneously with photoplethysmography (PPG), which was measured on the other index finger. The changes in the PPG amplitude (AM), baseline (BL), and BV (defined by BV equals Const. - BL), are related to the changes in the tissue blood volume pulse (for AM) and the total tissue blood volume, (for BL and BV). The low frequency fluctuations of BV and AM were directly correlated, those of AM preceding those of BV by 4 - 13 heart beats. The low frequency fluctuations of SBP and DBP were inversely correlated to those of AM and BV. For most of the subjects P, which is the cardiac cycle period, was directly correlated with AM and BV. The interrelationship between the low frequency fluctuations in tissue blood volume, arterial blood pressure and heart period, provide us with a better understanding of the autonomic nervous control of the peripheral circulation.

Paper Details

Date Published: 15 January 1999
PDF: 6 pages
Proc. SPIE 3570, Biomedical Sensors, Fibers, and Optical Delivery Systems, (15 January 1999); doi: 10.1117/12.336923
Show Author Affiliations
Meir Nitzan, Jerusalem College of Technology (Israel)
Anatoly Babchenko, Jerusalem College of Technology (Israel)
Boris Khanokh, Jerusalem College of Technology (Israel)

Published in SPIE Proceedings Vol. 3570:
Biomedical Sensors, Fibers, and Optical Delivery Systems
Francesco Baldini; Nathan I. Croitoru; Martin Frenz; Ingemar Lundstroem; Mitsunobu Miyagi; Riccardo Pratesi; Otto S. Wolfbeis, Editor(s)

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