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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 10, Iss. 2 — Jun. 25, 2006
  • pp: 91–95

Nonconstrained Blood Pressure Measurement by Photoplethysmography

Young-Zoon Yoon and Gil-Won Yoon  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 10, Issue 2, pp. 91-95 (2006)

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Blood pressure was predicted from photoplethysmography (PPG). To obtain PPG, backscattered light from a fingertip was measured and its waveform was analyzed. Systolic upstroke time and diastolic time in the pulse waveform were used as parameters to predict blood pressure. The experiment was carried out with five subjects on five different days. The systolic upstroke time had a correlation coefficient of -0.605 with respect to systolic blood pressure and the diastolic time had a correlation coefficients of -0.764 for diastolic pressure. This PPG method does not require an air-cuff installation on the arm and can predict blood pressure continuously. This simple LED/photo detector setup can be a good candidate for nonconstrained monitoring of blood pressure variations.

© 2006 Optical Society of Korea

OCIS Codes
(170.1610) Medical optics and biotechnology : Clinical applications
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.5380) Medical optics and biotechnology : Physiology

Original Manuscript: June 13, 2006
Revised Manuscript: June 15, 2006
Published: June 1, 2006

Young-Zoon Yoon and Gil-Won Yoon, "Nonconstrained Blood Pressure Measurement by Photoplethysmography," J. Opt. Soc. Korea 10, 91-95 (2006)

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