Non-invasive measurement of systolic blood pressure on the arm utilising photoplethysmography: development of the methodology
2005 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 43, no 1, 131-135 p.Article in journal (Refereed) Published
Photoplethysmography (PPG) can be used to measure systolic blood pressure at the brachial artery. With a specially designed probe, positioned in the most distal position beneath a pressure cuff on the upper arm, this is possible. The distance between the light source (880 nm) and the photodetector was 20 mm. A test was performed on neuro-intensive care patients by determining blood pressure from the PPG curves, and, when it was compared with systolic blood pressure obtained from inserted indwelling arterial catheters, a correlation factor of r=0.95 was achieved. The difference between blood pressure obtained using PPG and invasive blood pressure measurement was 3.9±9.1 mmHg (mean±SD), n=19. The depth to the brachial artery was 13.9±4.1 mm (mean±SD), n=18. A digital PPG system utilising pulsating light was also developed.
Place, publisher, year, edition, pages
2005. Vol. 43, no 1, 131-135 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-29570DOI: 10.1007/BF02345134ISI: 000226938000020Local ID: 14945OAI: oai:DiVA.org:liu-29570DiVA: diva2:250386