1. bookVolume 8 (2008): Issue 4 (August 2008)
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Format
Journal
eISSN
1335-8871
First Published
07 Mar 2008
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6 times per year
Languages
English
access type Open Access

Non-invasive Studies on Age Related Parameters Using a Blood Volume Pulse Sensor

Published Online: 27 Aug 2008
Volume & Issue: Volume 8 (2008) - Issue 4 (August 2008)
Page range: 82 - 86
Journal Details
License
Format
Journal
eISSN
1335-8871
First Published
07 Mar 2008
Publication timeframe
6 times per year
Languages
English
Non-invasive Studies on Age Related Parameters Using a Blood Volume Pulse Sensor

A non-invasive technique is implemented to measure a parameter which is closely related to the distensibility of large arteries, using the second derivative of the infrared photoplethysmographic waveform. Thirty subjects within the age group of 20-61 years were involved in this pilot study. Two new parameters, namely the area of the photoplethysmographic waveform under the systolic peak, and the ratio of the time delay between the systolic and the diastolic peaks and the time period of the waveform (ΔT/T) were studied as a function of age. It was found that while the parameter which is supposed to be a marker of distensibility of large arteries and ΔT /T values correlate negatively with age, the area under the systolic peak correlates positively with age. The results suggest that the derived parameters could provide a simple, non-invasive means for studying the changes in the elastic properties of the vascular system as a function of age.

Keywords

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