The Analysis of PPG Morphology: Investigating the Effects of Aging on Arterial Compliance

Yousef, Q.; Reaz, M. B. I.; Ali, M. A. M.

doi:10.2478/v10048-012-0036-3

Abstract

This study presents the variations of photoplethysmogram (PPG) morphology with age. PPG measurement is done noninvasively at the index finger on both right and left hands for a sample of erectile dysfunction (ED) subjects. Some parameters are derived from the analysis of PPG contour showed in association with age. The age is found to be an important factor that affects the contour of PPG signals which accelerates the disappearance of PPG’s dicrotic notch and PPG’s inflection point as well. Arterial compliance is found to be degraded with age due to the fall of arterial elasticity. This study approaches the establishment of usefulness of PPG’s contour analysis as an investigator to the changes in the elastic properties of the vascular system, and as a detector of early sub-clinical atherosclerosis.

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The Analysis of PPG Morphology: Investigating the Effects of Aging on Arterial Compliance

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