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Proceedings Paper

Noninvasive monitoring of systolic blood pressure on the arm utilizing photoplethysmography (PPG): clinical report
Author(s): Claes Laurent; Bjorn Jonsson; Magnus Vegfors; Martin Eneling; Lars-Goran Lindberg
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Paper Abstract

A soft (silicone) probe, containing six light emitting diodes (880 nm) and three photo detectors, utilizes photoplethysmography (PPG) to monitor pulsations from the brachialis artery under an occluding cuff during deflation. When the arterial pulse returns, measured by PPG, the corresponding pressure in the cuff is determined. This pressure is assumed to equal the systolic pressure. An assessment trial was performed on 21 patients (9 women and 12 men, aged 27-69) at the Neuro-Intensive care unit. Since the patients were already provided with arterial needles, invasive blood pressure could be used as the reference. By choosing a threshold, for detecting pulses, as a fraction (4%) of the maximum amplitude, the systolic blood pressure was underestimated (-0.57 mmHg, SD 12.1). The range of systolic pressure for the patients was 95.5 - 199.0 mmHg, n=14. The method is promising, but improvements still have to be made in order to improve the technique.

Paper Details

Date Published: 1 July 2004
PDF: 9 pages
Proc. SPIE 5318, Advanced Biomedical and Clinical Diagnostic Systems II, (1 July 2004); doi: 10.1117/12.529092
Show Author Affiliations
Claes Laurent, Linkopings Univ. (Sweden)
Bjorn Jonsson, Linkoping Univ. Hospital (Sweden)
Magnus Vegfors, Linkoping Univ. Hospital (Sweden)
Martin Eneling, Linkopings Univ. (Sweden)
Lars-Goran Lindberg, Linkopings Univ. (Sweden)

Published in SPIE Proceedings Vol. 5318:
Advanced Biomedical and Clinical Diagnostic Systems II
Gerald E. Cohn; Warren S. Grundfest; David A. Benaron; Tuan Vo-Dinh, Editor(s)

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