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1 July 2006 Respiration-induced changes in tissue blood volume distal to occluded artery, measured by photoplethysmography
Meir Nitzan, Igor Faib, Haim Friedman
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Journal of Biomedical Optics, Vol. 11, Issue 4, 040506 (July 2006). https://doi.org/10.1117/1.2236285
Abstract
Photoplethysmography (PPG) measures the cardiac-induced fluctuations and other changes in tissue blood volume by light transmission measurement. In the current study, light transmission was simultaneously measured in the two index fingers of healthy subjects, while the brachial artery in the left arm was occluded by a pressure cuff, so that no PPG signal appeared in the left finger. Correlated respiratory-induced changes in the PPG baseline in the right hand and in the light transmission in the left hand were found, indicating respiratory-induced blood volume changes in the finger distal to the occluded artery. The blood volume changes under the PPG probe distal to the occluded artery are interpreted as transition of blood volume from small arteries into big veins, mediated by the sympathetic nervous system.
©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)
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Meir Nitzan, Igor Faib, and Haim Friedman "Respiration-induced changes in tissue blood volume distal to occluded artery, measured by photoplethysmography," Journal of Biomedical Optics 11(4), 040506 (1 July 2006). https://doi.org/10.1117/1.2236285
Published: 1 July 2006
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Cited by 49 scholarly publications.
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KEYWORDS
Arteries
Blood
Blood pressure
Photoplethysmography
Tissue optics
Nervous system
Linear filtering
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