Aging was associated with altered photoplethysmogram contours, accelerating the disappearance of the dicrotic notch and inflection point, and degrading arterial compliance.
Observational
Does aging affect photoplethysmogram (PPG) morphology and arterial compliance in subjects with erectile dysfunction?
PPG contour analysis may serve as a useful noninvasive tool to detect age-related changes in vascular elasticity and early sub-clinical atherosclerosis.
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.
Yousef et al. (Sun,) conducted a observational in Erectile dysfunction. Aging was evaluated on Photoplethysmogram (PPG) morphology variations and arterial compliance. Aging was associated with altered photoplethysmogram contours, accelerating the disappearance of the dicrotic notch and inflection point, and degrading arterial compliance.