Key result
A reflection-mode optical sensor acquired PPG signals with an average systolic amplitude of 105.06 mV, showing higher augmentation index values in subjects with identified health issues.
Why the study?
Does a compact reflection-mode optical sensor reliably measure PPG waveforms and detect physiologically relevant differences in subjects with diverse health conditions?
Observational
Does a compact reflection-mode optical sensor reliably measure PPG waveforms and detect physiologically relevant differences in subjects with diverse health conditions?
A novel reflection-mode optical sensor can detect physiologically relevant differences in PPG waveforms, including diminished vascular elasticity, highlighting its potential for early cardiovascular screening.
A compact reflection-mode optical sensor was developed and evaluated for noninvasive pulse waveform measurement using photoplethysmography (PPG). The sensor integrates an infrared light-emitting diode and photodetector, enabling real-time acquisition of PPG signals from subjects with diverse ages and health conditions. Despite a limited sample size, the device demonstrated reliable detection of physiologically relevant differences in pulse waveforms. The average systolic amplitude was 105.06 mV, with a mean pulse width of 0.14 s and an augmentation index of 0.19. Notably, subjects with identified health issues showed a trend toward higher augmentation index values and reduced compliance in pulse waveform morphology, consistent with diminished vascular elasticity. These findings highlight the potential of the proposed approach for early cardiovascular screening and personalized health monitoring. Future work will focus on validating the sensor in larger cohorts and enhancing robustness for real-world applications.
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Biswas et al. (2026) reported an observational. Reflection-mode optical sensor was evaluated on PPG waveform characteristics (systolic amplitude, pulse width, augmentation index). A reflection-mode optical sensor acquired PPG signals with an average systolic amplitude of 105.06 mV, showing higher augmentation index values in subjects with identified health issues.
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