Preprint Article Version 1 This version is not peer-reviewed

Peripheral Hemodynamics Estimation Using Photoplethysmography Method

Version 1 : Received: 30 October 2024 / Approved: 31 October 2024 / Online: 31 October 2024 (10:39:50 CET)

How to cite: Shimuta, T.; Hanada, K.; Ryu, K.; Idei, K.; Kanai, N. Peripheral Hemodynamics Estimation Using Photoplethysmography Method. Preprints 2024, 2024102533. https://doi.org/10.20944/preprints202410.2533.v1 Shimuta, T.; Hanada, K.; Ryu, K.; Idei, K.; Kanai, N. Peripheral Hemodynamics Estimation Using Photoplethysmography Method. Preprints 2024, 2024102533. https://doi.org/10.20944/preprints202410.2533.v1

Abstract

Diseases such as diabetes are known to reduce blood circulation in the capillaries and arterioles; however, there are no devices that can easily measure this on a daily basis. In this study, we developed a tool for measuring finger photoplethysmograms using green-light and near-infrared LEDs. We then conducted photoplethysmography on 25 diabetic inpatients/outpatients as well as 21 adult males and females who had not been diagnosed or treated for diabetes, hypertension, or cardiovascular disease (as a control group). In the diabetic patients, the inverse full width at half maximum velocity plethysmogram (1/FWHMVPG) tended to be smaller compared to the control group, and the delay in the green light a-wave peak relative to the near-infrared light a-wave peak in the acceleration plethysmogram was significantly increased. The results suggest that peripheral hemodynamics could be easily estimated at home using a photoplethysmography device mounted on a ring-wearable device.

Keywords

Peripheral hemodynamics; photoplethysmography device; ring-wearable device; finger photoplethysmogram; photoplethysmography method

Subject

Engineering, Electrical and Electronic Engineering

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