Key result
A five-wavelength PPG system for non-invasive hemoglobin measurement reduced the mean absolute error to 0.3499 g/dL compared to 1.3778 g/dL for a three-wavelength system.
Why the study?
Monitoring hemoglobin is vital across clinical settings but is often performed using invasive methods.
Does a five-wavelength PPG finger probe improve the accuracy of non-invasive hemoglobin measurement compared to a three-wavelength system and invasive laboratory methods?
Population
8 subjects
Comparison
Three-wavelength and five-wavelength PPG systems vs invasive pathology laboratory measurement
Authors
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Hypothesis-generating for non-invasive hemoglobin monitoring; prospective trials required before clinical adoption.
Does a five-wavelength PPG finger probe improve the accuracy of non-invasive hemoglobin measurement compared to a three-wavelength system and invasive laboratory methods?
Absolute Event Rate: 0.3499% vs 1.3778%
A novel five-wavelength PPG finger probe provides highly accurate, non-invasive, real-time estimation of total hemoglobin, significantly outperforming a three-wavelength system.
Pinto et al. (2020) studied Hemoglobin measurement (n=8). Five wavelengths PPG system vs. Three wavelengths PPG system and invasive laboratory methods was evaluated on Mean absolute error between reference and estimated hemoglobin values. A five-wavelength PPG system for non-invasive hemoglobin measurement reduced the mean absolute error to 0.3499 g/dL compared to 1.3778 g/dL for a three-wavelength system.
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