Multispectral optoelectronic sensor to detect peripheral blood pulsatile variations with equivalent performance in light, medium and dark skin tones.

ABSTRACT: Inaccurate oxygen saturation (SpO₂) measurements using photoplethysmography (PPG) based pulse oximeters on dark skin tones, were a direct cause of increased mortality during the Covid pandemic (2019-2022) and continue to negatively impact routine clinical monitoring. Inaccuracies are commonly interpreted as being caused by rich pigmentation in dark skin tones. A multispectral optoelectronic sensor (mSOS) with bespoke electronics has been created to overcome skin tone related difficulties of capturing peripheral blood pulsatile variations in deoxyhemoglobin (HHb) in red visible spectrum (>600 nm), and to improve the detection of oxyhaemoglobin (HbO₂) in infrared spectrum (>850 nm). The study demonstrates that a better understanding of the impact of skin tone on complex

SUBMITTER: Hu S 

PROVIDER: S-EPMC12800169 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature